Answer:
84%
Step-by-step explanation:
21/25=?/100 ==> decimal value is dividing a number by 100
100 * 21/25=100 * ?/100 ==> percent value is multiplying a decimal by 100
2100/25 = ? ==> solve for ?
? = 84%
Answer:
21 is 84% of 25
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To earn a "C" in Probability, Sam must get a grade average of at least 70%.
Sam's test scores are 62, 71, and 65. His final exam score counts as 3 test
scores in the average. What is the minimum score Sam needs to get on his
final exam to get a "C" in the course?
The minimum score Sam needs to get on his final exam to get a "C" in the course is 82.
What is a probability?
A random event's occurrence is the subject of this area of mathematics. The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.
Given that, Sam's test scores are 62, 71, and 65.
The total score in three test is (62 + 71 + 65) = 198
Assume that, he scored x in the final test.
Total score of Sam is 198 + x.
He needs to score 70% means he needs to score 70 out of 100.
According to question,
(198 + x)/ 400 ≥ 70/100
Multiply both sides by 100:
(198 + x)/ 4 ≥ 70
Multiply both sides by 4
198 + x ≥ 280
x ≥ 280 - 198
x ≥ 82
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What inequality represents the graph? 4 . -8-40 48 x <= - 8; x < - 8; x > - 8; x < 8
Option 1 : x < = - 8 represents the given graph of inequality.
What is inequality?In mathematics, an inequality displays the connection between two values in an unbalanced algebraic expression. One of the two variables on the two sides of the inequality may be greater than, greater than or equal to, less than, or less than or equal to another value, according to inequality signs.
Depending on which way the inequality sign is pointing, a sign can be greater or less than. When the open portion of the sign is facing left, >, the value on the left side of the sign is greater than the value on the right. When it is turned to the right, the left value is less than the right value.
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You deposit $600 in a savings account. After 18
months, you check your statement and see that
you have earned $31.50 in interest. What is the
interest rate for your account?
Answer:
To calculate the interest rate for your account, you will need to use the formula for simple interest:
Interest = Principal x Rate x Time
In this case, the principal is the amount of money you deposited, or $600. The time is the number of months the money was in the account, or 18 months. And the interest is the amount of money you earned, or $31.50.
Plugging these values into the formula, we get:
$31.50 = $600 x Rate x 18
To solve for the rate, we can divide both sides of the equation by $600 and 18:
Rate = $31.50 / ($600 x 18)
Simplifying this expression gives us:
Rate = 0.01625
So, the interest rate for your account is approximately 1.625%.
Find the perimeter of the triangle.
Answer:
39 inches
Step-by-step explanation:
All of the sides are the same length because all of the angles are equal
21 - x = 2x - 3 Set two sides equal to each other and solve for x. Add x to both sides
21 = 3x - 3 Add 3 to both sides
24 = 3x Divide both sides by 3
x = 8
Substitute in 8 for x to find the value of a side
2x - 3
2(8) - 3
16 - 3
13
Each side length is 13
3 x 13 = 39
Triangle ABC is a right triangle, with right angle B. Side AC has a
length of 13. Side AB has a length of 5. Find the length of side
CB.
The length of side BC is approximately 10.928.
What is the right triangle?
In a right triangle, the side opposite the right angle is called the hypotenuse. In triangle ABC, side AC is the hypotenuse, and sides AB and BC are the other two sides.
To find the length of side BC, we can use the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the other two sides.
We can use the given information to write the Pythagorean theorem in the form:
AC^2 = AB^2 + BC^2
Substituting the given lengths, we get:
13² = 5² + BC²
Solving for BC, we get:
BC = √(13² - 5²)
= √(144 - 25)
= √(119)
= approximately 10.928
Therefore, the length of side BC is approximately 10.928.
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Or
Bill write 4 page per hour. I the total number of page written proportional to the number of hour pent writing?
Equation used to represent the relation between the number of pages written to the number of hours used with constant of proportionality is
x = 4y.
As given in the question,
Let us consider number of pages write by Bill be 'x'
And number of hours represented by 'y'
Number of hours used by Bill to write 4 pages = 1 hour
Number of pages written by Bill in 1 hour = 4
Given :
Number of pages is proportional to the number of hours
⇒ x ∝ y
⇒ x = ky
Where 'k' is the constant of proportionality.
When x = 4 , y = 1
substitute the value in the equation,
4 = k(1)
⇒ k = 4
Now the required equation with the constant of proportionality k = 4 is:
x = 4y
Therefore, the required equation to represent the relation between number of pages written to the number of hours used with constant of proportionality is equal to x =4y.
The complete question is:
Bill enjoys writing in his spare time. He writes 4 pages per hour. The proportional relationship between the number of pages written to the number of hours is represented by the equation ______. Write the equation in standard form with a constant of proportionality.
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Two shoppers bought meat at a supermarket deli. The first shopper bought 3 pounds of meat for $9.87. The second shopper bought 4 pounds of a meat that cost $1 more per pound than the meat the first shopper bought. How much did the second shopper pay?
Answer: $17.16 dollars
Step-by-step explanation:
first, you divide 9.87 by three which equals $3.29
then you add 1 which is $4.29
Finally, multiply it by 4 which is $17.16
Answer:$17.16
Step-by-step explanation:
A class is planning a trip to the local City Museum of Art. There are 22 people going on this trip.
There are four drivers and two types of vehicles, cars and trucks. The cars set four people,
including the driver and the truck seats six people again including driver. How many trucks and
cars doe the class need for this trip? Write a system of equations to solve.
12/24
A class is planning a trip to the local City Museum of Art. The class needs 3 trucks and 1 car to transport all 22 people on the trip.
What is the system of equations?Generally, To solve this problem, we can set up a system of equations using the information given. Let C be the number of cars needed and T be the number of trucks needed.
The first equation will represent the number of people that can be transported in the cars: 4C + 6T = 22
The second equation will represent the number of drivers: C + T = 4
Now we can solve this system of equations using elimination or substitution.
Using elimination, we can multiply the first equation by 2 and the second equation by 4 to get: 8C + 12T = 44 4C + 4T = 16
Then we can subtract the second equation from the first equation to get: 4C + 8T = 28
Then we can divide both sides by 4 to get: C + 2T = 7
Then we can substitute this value for C in the second equation to get: 7 - 2T = 4 T = 1.5
Since T represents the number of trucks, which must be a whole number, this solution is not possible.
Using substitution, we can solve for C in the second equation and substitute it into the first equation: C = 4 - T 4(4 - T) + 6T = 22 16 - 4T + 6T = 22 2T = 6 T = 3
Substituting this value for T into the second equation, we get: C = 4 - 3 C = 1
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Step 1: we know that angle t s r is-congruent-to angle q r s because all right angles are congruent. step 2: we know that angle t is-congruent-to angle q because it is given. step 3: we know that line segment s r is-congruent-to line segment r s because of the reflexive property. step 4: triangle t s r is-congruent-to triangle q r s because of the asa congruence theorem. of the aas congruence theorem. of the third angle theorem. all right triangles are congruent.
With the help of congruency of triangles rules, we know that TSR ≅ QRS because of (B) the AAS congruence theorem.
What is the congruency of triangles?Two triangles are said to be congruent if all three corresponding sides and all three corresponding angles have the same size.
These triangles can be moved, turned, flipped, and rotated to produce the same appearance.
When moved, they are parallel to one another.
So, we have two sets of angles and one common side.
Review the congruence situations.
SSS ⇒ Three sides in the first, three sides in the second.
SAS: two sides, including the angle of the first side.
Incorporating angle in the second.
2 angles and the side that joins them in the first, according to ASA
Two angles and the side that connects the two angles.
AAS = 2 angles in the first triangle, plus 1 side.
Second, and one side in △.
Let's read the statements again and fill in the blanks.
Step 1: Since all right angles are congruent, mTSR = mQRS = 90°.
Step 2: Since it is given, mT = mQ
Step 3: Due to the reflexive property, SR becomes RS (common side)
Step 4: Because of the AAS congruence theorem, TSR and QRS are required.
Therefore, with the help of congruency of triangles rules, we know that TSR ≅ QRS because of (B) the AAS congruence theorem.
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The correct form of a question:
Given: TSR and QRS are right angles; T ≅ Q
Prove: TSR ≅ QRS
Step 1: We know that TSR ≅ QRS because all right angles are congruent.
Step 2: We know that T ≅ Q because it is given.
Step 3: We know that SR ≅ RS is because of the reflexive property.
Step 4: TSR ≅ QRS because __________
a. of the ASA congruence theorem
b. of the AAS congruence theorem
c. of the third angel theorem
d. all right triangles are congruent
Urgent help:
please look at the image
will mark brainliest for correct answer
[tex]\sqrt[4]{256x^{6}y^{10} }[/tex]will be 4[tex]x^{3/2} y^{5/2}[/tex]
What is the fourth root?The number that, when multiplied four times by itself, yields the original number is the fourth root of a number. In other words, the square root of the square root of an integer equals the number's fourth root.
eg:
eg: [tex]\sqrt[4]{81}[/tex] = 3
We are asked
x> 0 and y> 0then
[tex]\sqrt[4]{256x^{6}y^{10} }[/tex] = 4 [tex]x^{3/2} y^{5/2}[/tex]
As 4 multiplied by 4 , 4 times given 256 and x to the power 6 and root 4 so that will be x to the power 3/2 and y to the 10 and root 4 will give 5/2
thus
[tex]\sqrt[4]{256x^{6}y^{10} }[/tex] will be equivalent to 4 [tex]x^{3/2} y^{5/2}[/tex]
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A rectangular room is 2 meters longer than it is wide, and its perimeter is 20 meters. Find the dimension of
the room. Length and width
Answer:
Hope this helps good luck :)
see explanation
Step-by-step explanation:
Find relationship of length(L) and width(w)
Perimeter = L + W + L + W
[tex]20. = (w+2) + w + (w+2) +w 20. = 4w + 4 -4. -4 16 = 4w 16. = 4w 4. 4 4. = w w = 4 L. = w+2 = 4 +2 L = 6[/tex]
Answer width is 4 meters and length is 6 meters.
You sell TV's at a local store and they pay you 4% commission for whatever you sell. At the end of the month you sold $9,000 worth of TV's. How much money in commission did you receive?
Answer:
360 in commission.
Step-by-step explanation:
If you received a 4% commission on the TVs you sold, and you sold $9,000 worth of TVs, then you would have received 4/100 * $9,000 = $<<4/100*9000=360>>360 in commission.
you tossed a coin 100 times and get only 27 heads. do you have a reason to expect that the coin is unfair? explain g
Therefore, coin is unfair ,It is true that the coin can be considered unfair.
What is probability ?Calculating or estimating how likely or "possible" something is to occur is the subject of probability. Words like "certain," "impossible," or "probable" can be used to express the likelihood of an event occurring. Probabilities in mathematics are always expressed as fractions, decimals, or percent with values ranging from 0 to 1.
Here,
Step 1: We see that a coin is tossed 100 times, but we only receive heads 27 times.
In other words, the odds of a head are 27/100 or 0.27.
It is thought that there will be an equal number of heads and tails on a fair coin (or very close, if not equal).
So, using a fair coin:
P(H)=P(T)=0.5
Step 2
But in this instance, P(H)=0.27, which is a long way from 0.5.
Therefore, coin is unfair.
It is true that the coin can be considered unfair.
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Question 6(Multiple Choice Worth 2 points)
(Two-Column Tables MC)
The table below shows the ratios of black to white keys on pianos of various sizes.
Black A 18 45 72
White 13 B 65 C
Determine which table has the correct values for A, B, and C.
The correct values for A, B and C are given as follows:
A = 9.B = 26.C = 104.How to obtain the correct values for A, B and C?The table shows the ratios of black to white keys on pianos of various sizes, and these ratios are constant, meaning that the following proportional relationship is established:
A/13 = 18/B = 45/65 = 72/C
Then the value of A can be obtained as follows:
A/13 = 45/65
Applying cross multiplication, we have that:
65A = 13 x 45
A = 13 x 45/65
A = 9.
The value of B can be obtained as follows:
18/B = 45/65
Applying cross multiplication, we have that:
45B = 18 x 65
B = 18 x 65/45
B = 26.
Finally, the value of C can be obtained as follows:
72/C = 45/65
Applying cross multiplication, we have that:
45C = 72 x 65
C = 72 x 65/45
C = 104.
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Darrel spent $383 on 21 presents for his grandchildren. Which expression uses compatible numbers to estimate the amount he spent on each?
$18.24
Step-by-step explanation:How do I find out the answer to this?You can find the answer to this by simply dividing the two numbers:
$383 ÷ 21 = $18.24
I hope my answer helped you! If you need more information or help, comment down below and I will be sure to respond if I am online. Have a wonderful rest of your day!
Solve the inequality for z.
z - 3 > 11
Simplify your answer as much as possible.
Answer: z > 14
Step-by-step explanation:
Move 3 to the right
ok so i did this twice but got wrong answer need help with this one rq
By solving an inequality, we will see that option a is cheaper for more than 60 miles.
For what number of miles is option A better?We know that option A charges $25 per day plus $0.15 per mile, so the cost for x miles is given by the linear equation:
A(x) = $25 + $0.15*x
While for option B the fixed cost is $10 and the cost per mile is $0.40, so the cost equation is:
B(x) = $10 + $0.40*x
The cost of option a will be smaller when:
$25 + $0.15*x < $10 + $0.40*x
$25 - $10 < $0.40*x - $0.15*x
$15 < $0.25*x
$15/$0.25 < x
60 < x
So for 60 miles the cost is the same, for x > 60 miles the cost of option a will be smaller (because the slope is smaller).
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answer the question linked
Please HELP WITH CHEM
The ratio of Oats to Maple syrup for 36 cookies is 192 grams: 816 grams. So the answer is Option C. 192 grams: 816 grams.
What is Ratio:Comparing two amounts of the same units and determining the ratio tells how much of one quantity is in the other.
when evaluating the relationship between two quantities or numbers. In general, x: y, which can be interpreted as "x is to y," is used to denote a ratio between two quantities.
Here we have
15 Cookies need 80g Oats
=> Amount of Oats for 1 cookie = 80g/15 gms
So the amount Oats for 36 Cookies = 80g/5 × 36 = 192 grams
15 Cookies need 340 grams of Maple syrup
=> Amount of Maple syrup for 1 cookie = 340/15 gram
So the amount of Maple syrup for 36 cookies = (340/15)×36 = 816 grams
By the above calculations,
For 36 Cookies we need 192 grams of Oats and 816 grams of Maple syrup
The Ratio of Oats to Maple syrup = 192 gram: 816 gram
Therefore,
The ratio of Oats to Maple syrup for 36 cookies is 192 grams: 816 grams. So the answer is Option C. 192 grams: 816 grams.
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The lines 5x + 2y = 14 and y = –5x + 9 are A. parallel b.perpendicular c.neither
Answer:
parallel
Step-by-step explanation:
same slope
Ms. patels gym class is practicing soccer. Ms. pedal has 18 soccer balls and three teams of students. She gives the same number of bars to eat student. How many balls does Ms. patel give each team
Answer
6
Step-by-step explanation:
There are 3 teams and 18 soccer balls. For each team to have the same number of soccer balls you need to do 18 divided by 3 to get 6. Each time will have 6 soccer balls.
work out the area of this triangle
height=2.5cm
base=4.6cm
Answer:
5.75
Step-by-step explanation:
So first you would multiply 2.5*4.6 which is 11.5
Next you would divide 11.5/2 because a triangle is half of a square.11.5/2 is 5.75
How many solutions does this equation have?
-2-y=-y
no solution
one solution
infinitely many solutions
Answer:
No solution
Step-by-step explanation:
-2-y=-y
clt
-2=-y+y
-2=0
:ans is -2=0 making it with no solution
The amount of time a certain brand of light bulb lasts is normally distribued with a
mean of 1900 hours and a standard deviation of 45 hours. Out of 670 freshly installed
light bulbs in a new large building, how many would be expected to last more than
1890 hours, to the nearest whole number?
An engineer looks up at the top of a cell tower. The engineer stands 30 meters from the center of the tower with a line of sight of 37° from the horizontal. The engineer's eyes are 2
meters above the ground.
The value of the tangent of angle 37° is 3/4. Then the height of the cell tower will be 24.5 meters.
What is trigonometry?Trigonometric functions examine the interaction between the dimensions and angles of a triangular form.
A specialist gazes toward the highest point of a cell tower. The specialist stands 30 meters from the focal point of the pinnacle with a view of 37° from the level. The designer's eyes are 2 meters over the ground.
Let 'h' be the height of the tower. Then we have
tan 37° = (h - 2) / 30
Simplify the equation, then we have
tan 37° = (h - 2) / 30
3/4 = (h - 2) / 30
4h - 8 = 90
4h = 98
h = 24.5 meters
The level of the cell pinnacle will be 24.5 meters.
The diagram is given below.
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A farm currently has 10 large male cattle. The farmer adds a pregnant rabbit to increase the livestock population. The novice farmer estimates that her rabbit population will double in size every month. Including the 10 cattle, how many animals will the farmer have after 7 months?
The number of animals will the farmer have after 7 months including the 10 cattle are 1280.
Explain the term rate of population growth?The country, territorial, or territorial area's average yearly rate of change in population size over a certain time period. It expresses the proportion, usually multiplied by 100, between the annual growth in population size and indeed the overall population for that year.For the stated question-
There are ten huge male cattle on a farm right now. In order to boost the number of animals, the farmer brings in a pregnant rabbit. The inexperienced farmer expects her rabbit population to double each month.Thus, number of animals after years;
= 10 x 2⁷
= 1280
Thus, number of animals will the farmer have after 7 months including the 10 cattle are 1280.
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Which is an equation of the line through the origin and (-5, 6)?
The equation of line through the origin and (-5, 6 ) is y = [tex]-\frac{6}{5}x[/tex]
What is slope?The slope of a line is the ratio of the amount that y increases as x increases some amount. Slope tells you how steep a line is, or how much y increases as x increases. The slope is constant (the same) anywhere on the line.
the coordinates of the origin is (0, 0) and h other coordinates are (-5, 6)
at x = 0 and y = 0
using the equation of straight line y = mx + c
0 = 0(m) + c
so c = 0
at x = -5, y = 6
6 = -5m +c
but c = 0
6 = -5m
m = -6/5
Equation of line becomes y = -6/5x
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Find the simple interest on a loan of $9,000 at 7.6% interest for 9 months.
Anyone know the answer ??
Only answer if you know, any other answers will be reported !
Answer:
P= RS. 9000
R=7.6%
T= 9 months
Simple Interest (SI}=?
By using formula,
SI= PTR/100
= 9000* 7.6* 9/ 100* 12
= 615600/1200
= 513
3(4x+2)=(?)x+( )
Enter the number that goes in the green box
Find the values of x and y.
Answer:
x = 90 , y = 43
Step-by-step explanation:
Since AB and AC are congruent , then Δ ABC is isosceles with base angles congruent , that is
∠ ABD = ∠ ACD = 47°
AD is the perpendicular bisector of BC , so
∠ ADB = x = 90
the sum of the 3 angles in Δ ABD = 180° , then
y = 180° - (90 + 47) = 180 - 137 = 43