Step-by-step explanation:
-7 + 9 + (-8)
2 + (-8)
-6
Hope this helps! :)
Step-by-step explanation: Remove parenthesis. If there is a "+" in front of an expression in parenthesis, the expression remains the same.
-7+9-8. Calculate the sum or difference. You should get -6.
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Determine whether the statement makes sense or does not make sense, and explain your reasoning.
.I read that a certain star is 10^5 light-years from Earth, which is 100,000 light-years.
Choose the correct answer below.
OA. The statement makes sense. The value of 10^5 is not 100,000.
OB. The statement makes sense. The value of 10^5 is 100,000.
OC. The statement does not make sense. The value of 10^5 is not 100,000.
OD. The statement does not make sense. The value of 10^5 is 100,000.
OB. The statement makes sense. The value of 10^5 is 100,000 is the correct answer.
How to expand exponential expressions?10^5 = 10*10*10*10*10 = 100,000
Repeated multiplication is expressed using exponential notation.
For instance, 10*10*10 can be expressed more briefly as 10^3.
The base is the number 10 in 10^3.
Exponent refers to the 3 in 10^3.
The exponential expression is known as the number 10^3.
You can learn how to conduct mathematical operations on an exponential expression or term by being familiar with its constituent parts' names.
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A model rocket is launched with an initial upward velocity of 113 ft/s. The rocket’s height h (in feet) after t seconds is giving by the following. h=113t-16t^2 Find all values of t for which the rockets height is 39 feet. Round your answer(s) to the nearest hundredth.
A company is conducting a survey to determine how prepared people are for a long-term power outage, natural disaster, or terrorist attack. The frequency distribution on the right shows the resultsUse the table to answer the following question. What is the probability that the next person surveyed is very prepared?
The probability the next person surveyed is very prepared is 0.119.
What actually does probability mean?
The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number ranging from zero and 1, where, roughly, 0 denotes the event's impossibility and 1 represents certainty.Formula of total frequency is,
Total = f₁ + f₂ + f₃ + f₄ +...............n∑fi
The total frequency is,
total = n∑i=2 fi ⇒ 262 + 992 + 587 + 313 + 52
The total number of people prepared for a long-term power outage, natural disaster, or terrorist attack is obtained by taking the sum of the all frequencies.
probability = N(E)/N(S)
the information given, there are 262 people are very prepared.
That is, N(A) = 262
The required probability is,
P(A) = 262/2206
= 0.119
The probability the next person surveyed is very prepared is 0.119.
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what is8.546 rounded to nearest tenth
If we round to the nearest tenth, it would be 8.5 because the hundredth digit is less than 5.
Hence, the answer is 8.5.Joshua earned $646 for 40 hours. Find the unit rate.
To find the unit rate (amount per hour) you divide the given amount into the given number of hours:
[tex]\frac{646}{40h}=16.15/h[/tex]Then, the unit rate is $16.15/hour
ERROR ANALYSIS: Student A says there is no solution to the graphed system of equations. Student B says there is one solution. Which student is correct? Why?
Then, to solve the exercise, we need to know the slope of each line. The slope of a line is the measure of the steepness of a line.
The graph shows that the red line has a greater steepness than the blue line. Thus, the lines have different slopes. Also, two lines are parallel if they have the same slope. Since these lines have different slopes, they are not parallel.
Therefore, student B is correct because the lines are not parallel, so they will intersect.
$4500 is deposited for 4.5 years in an account that pays 4.5% interest compounded monthly. What is the value of the account when the customer takes the money at the end of the 4.5 years?
Answer:
$5507.98
Explanation:
To find the value of the account, we use the compound interest formula below:
[tex]Amount\: at\: Compound\: Interest,A=P(1+\frac{r}{n})^{nt}[/tex]From the given information:
• Principal,P=$4500
,• Interest Rate, r=4.5%=0.045
,• Number of compounding periods, n=12 (Monthly)
,• Time, t=4.5 years
Substituting the given values, we have:
[tex]\begin{gathered} A=4500(1+\frac{0.045}{12})^{12\times4.5} \\ =4500(1+0.00375)^{54} \\ =4500(1.00375)^{54} \\ =\$5507.98 \end{gathered}[/tex]The value of the account when the customer takes the money at the end of the 4.5 years is $5507.98.
Does the point (1, 0) satisfy the equation y = 7x + 1? yes no
To find out if the point (1,0) satisfy the equation we plug x=1 and y=0 into the equation:
[tex]\begin{gathered} 0=7\cdot1+1 \\ 0=8 \end{gathered}[/tex]since this is not true we conclude that th
Given g(k) = 2k² - 4, find g(-5).
Answer:
g(-5)=46
Step-by-step explanation:
given that function is,
g(k) = 2k² - 4,
and we find the value of g(-5)
so,
g(-5)=2(5)^2-4
simpley put -5 in place of k
g(-5)=2×25-4
g(-5)=46
Answer:
g(-5) = 46
Step-by-step explanation:
Given function:
[tex]g(k)=2k^2-4[/tex]
To find g(-5), substitute k = -5 into the given function:
[tex]\begin{aligned}\implies g(-5)&=2(-5)^2-4\\&=2(25)-4\\&=50-4\\&=46\end{aligned}[/tex]
a casting weighted 148 lb out of the mold. it weighed 141 lb after finishing. what percent of the weight was lost in the finishing?
The amount of weight lost will be equal to 4.72%.
Percentage may be defined as a form of expressing a number as a fraction of hundred. To find the percentage of a number we divide the number by the total amount and then multiply the answer with hundred. The initial weight of the casting was 148 lb and the final weight is 141 lb. To find the percentage we use the formula
Percentage lost = [(Final weight - Initial weight)/Initial weight] × 100
Percentage lost = [(141 - 148)/148] × 100
Percentage lost = ( -7/148) × 100
Percentage lost = -0.0472 × 100
Percentage lost = -4.72% and since we write the absolute value therefore, Percentage lost = 4.72%.
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6. rule (x,y) ---> is the image similar to the original pre-image?
Here, we want to check for the relationship between the image and its pre-image
The pre-image is (x,y)
The image is (3x,3y+5)
As we can see, the pre-image is not similar
This is because the transformation applied to the two values are not same
Thus, we have that;
No, the image is not similar to the pre-image as the translations applied to both coordinates are not same
The pre-image was transformed by dilating the x-coordinate of the pre-image by 3 units while the y-coordinate was transformed by dilating the y-coordinate of the pre-image by 3 and translating it upward by 5 units
Enter the ratio as a fraction in lowest terms
2ft to 40 in.
Answer:
[tex]\frac{3}{5}[/tex]
Step-by-step explanation:
2 feet is equivalent to 24 inches. (12 inches make a foot 2 x 12 = 24)
[tex]\frac{24}{40}[/tex] = [tex]\frac{3}{5}[/tex] Divide the top (numerator) and the bottom (denominator) by 8 to simplify.
What is the smallest 3 digit number that is divisable by 2, 3, 4 , 5 and 6
The smallest 3 digit number that is divisible by 2, 3, 4 , 5 and 6 is 720.
How can the digit number that is divisible be caculated?Let us find the factors of the given numbers which are Factors of 2 are 1 and 2. then the factors of 3 are 1 and 3, the Factors of 4 are 1, 2 and 2, then the Factors of 5 are 12 and 5, then the Factors of 6 are 12, 2 and 3.
Then we can find the Lowest Common Factor of them as (1*2*3*2*2*5*2*3) which will give us 720.
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You are cycling around Europe with your friends.You want to frame a photo from your trip to send home. Select a frame that is suitable for a photo with a perimeter of 70 cm. Is this frame suitable?YesNoIs this frame suitable?YesNoIs this frame suitable?YesNo
The perimeter of frame is given 70 cm.
There are two frames given.
For first frame , calculating the perimeter .
[tex]P=2(15+20)=2\times35=70\operatorname{cm}[/tex]For second frame, calculating the perimeter.
[tex]P=2(30+40)=2\times70=140\operatorname{cm}[/tex]Hence the first frame is suitable for for a photo with a perimeter of 70 cm.
This is the frame which is suitable.
PLEASE HELP ITS DUE SOON! I DONT GET ANY OF THIS! HELP WOULD BE MUCH APPRECIATED! NEED THIS DONE BEEN STUCK ON THIS FOR WAY TO LONG!
YOU WILL GET 100 POINTS IF YOU HELP! QUESTION DOWN BELOW!!!!!
1) [tex]BC \parallel EF, \angle 1=\angle 3[/tex] (given)
2) [tex]\angle 2=\angle 3[/tex] (corresponding angles)
3) [tex]\angle 1=\angle 2[/tex] (transitive property)
4) [tex]AB \parallel DE[/tex] (converse of corresponding angles theorem)
f(x) = 4
this line is
vertical
O horizontal
O diagonal
O impossible to graph
f(x) = 4
this line is
O vertical
O horizontal
O diagonal
O impossible to graph
Rationalise
(3+√2)/(√5+√3)
Rationalization of the surd [tex]\frac{(3+\sqrt{2} )}{(\sqrt{5} )+\sqrt{3} }[/tex] gives [tex]\frac{3\sqrt{5} -3\sqrt{3}+\sqrt{10} -\sqrt{6} }{2}[/tex]
What is surd?In mathematics surd refers to the root of numbers that do not have a perfect root. Surds are used to represent irrational numbers in square root, cube root and so on.
How to Rationalize (3+√2)/(√5+√3)The data given the question is
[tex]\frac{(3+\sqrt{2} )}{(\sqrt{5} )+\sqrt{3} }[/tex]
This is solved as follows;
[tex]\frac{(3+\sqrt{2} )}{(\sqrt{5} )+\sqrt{3} }[/tex]
Rationalizing the denominator
[tex]\frac{(3+\sqrt{2} )}{(\sqrt{5} +\sqrt{3} }*\frac{\sqrt{5} -\sqrt{3} }{\sqrt{5} -\sqrt{3} }[/tex]
multiplying out
[tex]\frac{3\sqrt{5}-3\sqrt{3} +\sqrt{10}-\sqrt{6} }{5-\sqrt{15} +\sqrt{15} -3}[/tex]
adding and subtraction when required
[tex]\frac{3\sqrt{5}-3\sqrt{3} +\sqrt{10}-\sqrt{6} }{5-3}[/tex]
[tex]\frac{3\sqrt{5}-3\sqrt{3} +\sqrt{10}-\sqrt{6} }{2}[/tex]
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David watches Maria and Alma race electric trains around a track. Maria's train goes around the track in 10 seconds. Alma's train goes around the track in 12 seconds.
How long will it take for both trains to cross the finish line together the first time?
Answer:
60 seconds
Step-by-step explanation:
The LCM of 10 and 12 is
10 = 2 × 5
12 = 2² × 3
LCM = 2² × 3 × 5 = 60
Answer: 60 seconds
the anwser is 60 seconds
In the diagram, .
Triangles G E F and J H I are shown. The length of side G F is 20 and the length of side I J is 10. Th elength of side F E is 40 and the length of side I H is 20.
To prove that the triangles are similar by the SAS similarity theorem, it needs to be proven that
In order prove that the triangles are similar by the SAS similarity theorem, it needs to be proven that A. J measures 60°.
What is SAS Similarity Theorem?The SAS Similarity Theorem states that two triangles are similar if their included angles are congruent and their two sides are proportionate to one other. Triangle congruence and resemblance are both criteria for SAS.
The triangles are congruent if two sides and the included angle of one triangle are equivalent to two sides and the included angle of another triangle.
In this case, the length of side FE is 40 and the length of side IH is 20. This gives a value of 60. Therefore, J should measure 60°.
In conclusion, the correct option is A.
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Triangles G E F and J H I are shown. The length of side G F is 20 and the length of side I J is 10. Th elength of side F E is 40 and the length of side I H is 20. To prove that the triangles are similar by the SAS similarity theorem, it needs to be proven that
J measures 60°.
J measures 30°.
I measures 60°.
I measures 30°.
Solve: 12/40 = 30/×
Given:
[tex]\frac{12}{40}=\frac{30}{x}[/tex][tex]\begin{gathered} x=30\times\frac{40}{12} \\ x=\frac{1200}{12} \\ x=100 \end{gathered}[/tex]Answer:
100Step-by-step explanation:
Solve:
12/40 = 30/×
it's a simple equation12 : 40 = 30 : x
x = 30 * 40 : 12
x = 1200 : 12
x = 100
Could you help me with these problems ? I don't really know how to put the equation together and the steps I should take to solve it, it would be amazing if you could show me how, and I'd be very thankful if you could also add a picture showing the steps if possible. Thank you so much.
Since it is a right triangle, you can use the trigonometric ratio sin(θ) to solve the exercise:
[tex]\sin (\theta)=\frac{\text{opposite side}}{\text{hypotenuse}}[/tex]Graphically,
So, in this case, you have
[tex]\begin{gathered} \theta=54\text{\degree} \\ \text{ Opposite side }=72 \\ \text{ Hypotenuse }=x \\ \sin (54\text{\degree})=\frac{72}{x} \\ \text{ Multiply by x from both sides of the equation} \\ \sin (54\text{\degree})\cdot x=\frac{72}{x}\cdot x \\ \sin (54\text{\degree})\cdot x=72 \\ \text{ Divide by }\sin (54\text{\degree})\text{ from both sides of the equation} \\ \frac{\sin(54\text{\degree})\cdot x}{\sin(54\text{\degree})}=\frac{72}{\sin(54\text{\degree})} \\ x=\frac{72}{\sin(54\text{\degree})} \\ x=\frac{72}{0.8090} \\ x=88.99 \\ \text{ Rounding to the nearest tenth} \\ x=89.0 \end{gathered}[/tex]Therefore, the measure of the missing side is 89.
Translate to an equation, then solve.The product of 2, and a number increased by 7, is – 36.
Let the number be r then
2r is the product of 2 and the number
2r + 7 is when the product is increased by 7
2r + 7 = -36
2r = -36 - 7
2r = -41
r = -41/2
= -20 1/2
Simplify using order of
operations.
3 • 10 (9 + 1)²
Answer:
3000
Step-by-step explanation:
Parentheses - (9 + 1) = 10
Exponents - 10 x 10 = 100
Multiplication - 10 x 100 = 1000 then 1000 x 3 = 3000
D
A
S
to convert a decimal to do a fraction for the decimal over ______and multiply the numerator and denominator by _______and tell there is no longer a decimal in the numerator then___ your fraction
1) Let's proceed the steps
To convert a decimal to do a fraction for the decimal over one
Ex
0.5/1
And multiply the numerator and denominator by ten
Ex
5/10
(..) *until there is no longer a decimal in the numerator then simplify your fraction
Ex
1/2
Your friend just purchased a new sports car for $32,000. He received $6,000 for his trade in and he used that money as a down payment for the new sports car. He financed the vehicle at 6.76% APR over 48 months. Determine the amount financed from the given information.
a.
$38,000
c.
$29746.15
b.
$32,000
d.
$26,000
Answer: C. $29,746.08
Step-by-step explanation:
What is the slope of a line perpendicular to the line whose equation is 6x+8y=−128. Fully simplify your answer.
The slope of a line perpendicular to the line 6x + 8y = -128 is 4/3.
Given,
The equation of a line = 6x + 8y = -128
We have to convert this into standard form of linear equation, y = mx + b :
So,
6x + 8y = -128
Add -6x to both sides,
6x + 8y - 6x = -6x - 128
Now,
8y = -6x - 128
Divide 8 on both sides
8y/8 = (-6x - 128) / 8
We get,
y = -6/8x - 16
Here, this is in standard form of linear equation.
Here slope of line, m₁ = -6/8
We have to find the slope of line(m₂) which is perpendicular to the given line.
If the line is perpendicular, the slope(m₂) will be the negative reciprocal of the slope(m₁) of the given line.
That is,
Slope of line, (m₂)= -(m₁) = - (-8/6) = 8/6 = 4/3
That is, the slope of the line which is perpendicular to the given line is 4/3.
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Steve Conway wants his team to win more than 57 games this year. His team has already won 2 games this season and there are 5 more months to play. Based on his goal, how many games must his team win per month?
Using a linear function, it is found that:
The inequality is: 5m + 2 > 57.The solution is: m > 11.They team needs to win more than 11 games per month.Linear functionThe linear function that models this situation is defined as follows:
y = mx + b.
In which the parameters are as follows:
m is the slope, which is the number of games that he wants to win per month.b = 2 is the intercept, which is the number of games that he has already won.They want to win more than 57 games, and there are 5 months to play, hence the inequality is given as follows:
5m + 2 > 57.
It is solved similarly to an equality, isolating the variable m and finding the range of values, as follows:
5m > 55
m > 55/5
m > 11.
Hence the team needs to win more than 11 games a month, and the solutions is illustrated by the image given at the end of the answer.
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Can someone please help me graph this? It’s due in 5 minutes
An order relationship with greater than, greater than or equal to, less than, or less than or equal to between two algebraic expressions. The solution of inequality -3x+4≥10 is x≤-2
What is Inequality?An order relationship with greater than, greater than or equal to, less than, or less than or equal to between two algebraic expressions.
The given inequality is
-3x+4≥10.
To solve the above inequality
Subtract -4 from both sides.
-3x+4-4≥10-4
+4 and -4 we get zero.
-3x≥6
Divide by 3 on both sides
-x≥2
When negative sign is multiplied on both sides, the greater than or equal to symbol changes to lesser than or equal to.
x≤-2
Hence x≤-2 is solution for -3x+4≥10.
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Real world compositionsWhat is the volume of a spherical balloon after 11 seconds if the radius of the balloon is increasing at 1.3 cm/sec? Round to the nearest tenth of a centimeter solve using composite functions
In this case we have two functions. The first one is the volume of the balloon and the other is the value of the radius. Both functions depend on the variable time.
Finding the functions to solve the problem, we have:
[tex]\begin{gathered} V(t)=\frac{4}{3}\pi r^3\text{ }^{}\text{ (First function)} \\ r(t)=1.3\cdot t\text{(Second function. Let us suppose that the initial radius is equal to zero)} \end{gathered}[/tex]Let us replace the second function in the first one to get a composite function. Doing so, we have:
[tex]\begin{gathered} V(t)=\frac{4}{3}\pi(1.3\cdot t)^3 \\ V(t)=\frac{4}{3}\pi(2.197\cdot t^3)\text{ (Raising the expression within parentheses to the power of 3)} \\ V(t)=2.93\pi\cdot t^3(^{}\text{ Multiplying constant terms)} \end{gathered}[/tex]Now, we can replace t=11 to find the value of the volume.
[tex]\begin{gathered} V(11)=2.93\pi\cdot(11)^3\text{ } \\ V(11)=2.93\pi(1331)\text{ (Raising 11 to the power of 3)} \\ V(11)=12248.88\text{ (Multiplying)} \end{gathered}[/tex]The answer is 12248.9 cm3 (Rounding to the nearest tenth of a centimeter).
Write an expression that is the product of two factors and is equivalent to - 3x - 15.Which expression is the product of two factors and is equivalent to - 3x - 15?A. - 3x-2-13B.-3(x - 5)C. (7x-2)-(10x - 13)D. -3(x+5)
Amon the choices given, letter D is equivalent to - 3x - 15.
-3 ( x + 5 )
if we distribute -3 , we will have
-3 (x ) = -3x , and
-3 ( +5) = -15
-3 ( x + 5) = -3x - 15
Answer: D. -3 (X + 5)