Complete the sentence.
Twenty-one is 25% of __
Answer:
84
Step-by-step explanation:
Answer:
Your answer is 84
Step-by-step explanation:
25=25 50 75 100 OR 4 so multiply 21 by 4
21x4 OR
21x1
42=21x2
63=21x3
84=21x4
WILL GIVE BRAINLYIST
What is the first step in converting 139,000,000,000,000,000 to a scientific notation?
Move the decimal after the number 1.
O Move the decimal after the number 9.
O Drop all of the zeroes following the number 9.
O Count the number of positions to move the decimal place.
Answer:
i think it is Move the decimal after the number 1.
Step-by-step explanation:
it the text it says
"To convert our example, 602,200,000,000,000,000,000,000, into a scientific notation, the first step is to place a decimal after the digit 6, and then drop all the zeros after the 2. This will leave us with a coefficient of 6.022. Next, to find the exponent, count the number of times you had to move the decimal point until it landed after the first digit of the coefficient. The answer is 23; therefore, the scientific notation is 6.022 x 1023. In cases where the numbers are multiples of 10, only the base number 10 and the exponent can be used. For instance, the number 1,000,000,000, can be written as 109. Now you try it. What is the scientific notation for a light year, which has been estimated at 9,500,000,000,000 km? As you read the information in this lesson, challenge yourself by converting the large numbers into scientific notations."
Awnser:
(C) Move the decimal after the number 1.
Step-by-step explanation:
The correct answer is Move the decimal after the number 1. The first step in converting a large number to a scientific notation is to determine the coefficient, which is always greater than 1 and less than 10.
Please Complete the question.
Answer:
0.0174 is the answer you are looking for
The temperature in the morning was -2 degrees. The temperature is dropping at a constant rate, and 4 hours later the temperature is now -22 degrees. How many degrees did the temperature change each hour?
Given:
Temperature in the morning = -2 degrees.
Temperature is dropping at a constant rate.
Temperature after 4 hours = -22 degrees.
To find:
The rate of change of temperature.
Solution:
Let y be the temperature after x hours from the morning.
Temperature in the morning is -2 degrees. It means, the ordered pair is (0,-2).
4 hours later the temperature is now -22 degrees. It means, the ordered pair is (4,-22).
Now, formula for average rate of change or slope is
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m=\dfrac{-22-(-2)}{4-0}[/tex]
[tex]m=\dfrac{-22+2}{4}[/tex]
[tex]m=\dfrac{-20}{4}[/tex]
[tex]m=-5[/tex]
Therefore, the change in temperature is -5 per hour. It means the permutate is decreasing by 5 degrees per hour.
Plz help me I have a f in math class and if tht f stays there they kick me out of school and then I have to go to a never one so plz get them right for me ..and u will get Brainliest
Answer:
234Step-by-step explanation:
surface area = 2( LW + LH + WH)
where L = Length = 9
W = Width = 2
H = Height = 9
plugin values into the formula:
surface area = 2 ( LW + LH + WH)
= 2 ( 9*2 + 9*9 + 2*9 )
= 2 ( 18 + 81 + 18 )
= 2 (117)
= 234
Answer:
162
Step-by-step explanation:
9x9x2=162
A cardboard box is shaped like a cube. The length of each side is 15 inches.
What is the surface area of the box, in square inches?
Work Shown:
s = side length = 15 inches
SA = surface area of the cube
SA = 6s^2
SA = 6*15^2
SA = 6*225
SA = 1350
The surface area is 1350 square inches.
Note the formula has us compute the area of each square face, which is s*s = s^2. Then we multiply by 6 since there are 6 identical square faces on the cube.
Answer:
1350 [tex]in^{2}[/tex]
Step-by-step explanation:
A cube has six sides. To find the area of a square, multiply the length by itself:
15 x 15 = 225
Since each side is the same (because the box is a cube), simply multiply 225 by 6 (the number of sides on a cube):
225 x 6 = 1350
What is the density of an object that has a mass of 20 grams and has a length of 8cm and a width of 2cm and a height of 5cm????
Answer:
Volume is the amount of space an object occupies. To determine the volume of any rectangular object, multiply the measurements of length, width, and height.
Volume = Length × Width × Height
Calculate the volume of this rectangular object.
Length = 3 cm
Width = 3 cm
Height = 12 cm
Volume = l × w × h
Volume = 3 cm × 3 cm × 12 cm
Volume = 108 cm3
Notice that the units for volume are cubic centimeters (cm3).
So 8 ÷ 25 = 0.32 and the units would be g/ cm3 . Other units of density could be g/L or g/ml or mg/ cm3 or kg/ m3 and the list could go on and on. Any unit of mass divided by any unit of volume.
Step-by-step explanation:
hope this helpa
Which line is perpendicular to y = 1/2 x + 6? .
Answer:
y=-2x+b
Step-by-step explanation:
PLEASE HELP, WILL MARK BRAINLIEST
Click on the graph to choose the correct one.
Graph the function y from:
y=x^2-16/x+4
Answer:
It is the 4th graph
Step-by-step explanation:
PLEASE HELP, MARKING BRAINLIEST!!!!
If 30/t = 18/r, then t/r =
Answer:
5/3
Step-by-step explanation:
30/t = 18/r
Multiplying by r both sides,
30*r /t = 18
Dividing by 30 both sides,
r/t = 18/30 = 3/5
So, t/r = 5/3
9514 1404 393
Answer:
t/r = 5/3
Step-by-step explanation:
Every proportion can be written 4 ways. I like to think of them as "upside down and sideways." They are ...
[tex]\dfrac{30}{t}=\dfrac{18}{r}\qquad\dfrac{t}{30}=\dfrac{r}{18}\\\\\dfrac{30}{18}=\dfrac{t}{r}\qquad\dfrac{18}{30}=\dfrac{r}{t}[/tex]
__
Knowing this, you can simply rewrite your proportion as ...
t/r = 30/18
t/r = 5/3
_____
More formally, you could multiply both sides by t/18:
(30/t)(t/18) = (18/r)(t/18)
30/18 = t/r . . . . as above
Reducing the fraction gives ...
t/r = 5/3
__
Additional comments
The usually-recommended procedure for solving something like this is to "cross-multiply" as a first step. That will give ...
30r = 18t
Of course, that is equivalent to multiplying both sides by rt, the product of the denominators.
From here, to get t/r, you need to divide both sides by 18r.
(30r)/(18r) = (18t)/(18r)
30/18 = t/r
The combination of the two steps, multiply by rt, divide by 18r, is equivalent to multiplying by (rt)/(18r) = t/18, as we did above. That is, you can save some work by doing both steps at once--or by simply rewriting the proportion.
a figure has reflected symmetry across line a. line a passes through the figure. which statement is not true about the figure.
Answer:
hard stuff i can't answer
AnswerAnswerAnswerAnswerAnswerAnswer
Vincent has already finished 5 oil changes today, and can complete more at a rate of 1 oil change per hour. Warren just came on shift, and can finish 2 oil changes every hour. Sometime during the day, the friends will be tied, with the same number of oil changes completed. How long will that take? How many oil changes will Vincent and Warren each have done?
Answer:
Oil changes = 5
Vincent = 10 oil changes
Warren = 10 oil changes
Step-by-step explanation:
Vincent = 5 + h
Warren = 2h
Where,
h = number of oil changes
How long will that take?
Vincent = Warren
5 + h = 2h
5 = 2h - h
5 = h
h = 5
Number of oil changes = 5
How many oil changes will Vincent and Warren each have done?
Vincent = 5 + h
= 5 + 5
= 10 oil changes
Warren = 2h
= 2(5)
= 10 oil changes
math shi someone help me.
Durante uma atividade de Matemática, professora Julieta distribuiu a cada um de seus alunos 4 canudinhos com medidas 2 cm, 3 cm, 7 cm e 8 cm. Nessa atividade, os alunos de Julieta tinham que construir triângulos com esses canudinhos, sem cortá-los.
Quantos triângulos distintos cada um dos alunos de Julieta puderam formar com esses canudinhos?
Answer:
2 different trianglesStep-by-step explanation:
During a mathematics activity, teacher Julieta distributed to each of her students 4 straws measuring 2 cm, 3 cm, 7 cm and 8 cm. In this activity, Julieta's students had to build triangles with these straws, without cutting them. How many different triangles could each of Julieta's students form with these straws?==========================================================
Triangle inequality theorem says that no any side of a triangle can be longer or equal to the sum the other two sidesGiven measures:
2 cm, 3 cm, 7 cm, 8 cmWe see that:
2+3 < 7 and 2+3 < 8Therefore we can't make triangles with the sides of 2 cm, 3 cm and 7 cm or 8 cm
Possible solutions are:
2 cm, 7 cm, 8 cm3 cm, 7 cm, 8 cmSo we can make two different triangles
Which of the following equations is equivalent to b' = x?
A. y= log x
b
B. x = log y
b
C. y=Inx
D. y=logx
Answer:
It is A
Step-by-step explanation:
PLEASE HELP FAST!!!!
factor completely: 5x^3+40x^2-2x-16
Answer:
(x+8)(5x2−2)
Step-by-step explanation:
Hope this helps have a nice day :)
Which of the following numbers ordered from least go gratest?
0.5, 5/8, 65%, 3/5.
Answer:
0.5 3/5 5/8 65%
Step-by-step explanation:
Answer:
Your answer is 0.5, 3/5, 5/8, 65%.
Step-by-step explanation:
Convert all numbers to decimals:
0.5 = 0.5
5/8 = 0.625
65% = 0.65
3/5 = 0.6
Arrange the numbers accordingly: 0.5, 0.6, 0.625, 0.65. Hence, your answer is 0.5, 3/5, 5/8, 65%.
24 students took an algebra test, if 18 students passed the test, what percent passed
Answer:
75%
Step-by-step explanation:
24 students
divide 18/24
= 0.75
move the decimal point 2 places to the right
= 75
add a percent symbol
= 75%
hope this helped ! brainliest ?
what is 3 times piy time 53 divided by 72
Answer:
6.93768377668
Step-by-step explanation:
confusion
HELP!
A submarine dlves 630 feet every 6 minutes and 4,200 feet every 40 minutes.
Find the constant rate at which the submarine dives. Enter your answer in feet per minute and feet per
hour.
The submarine dives
feet per minute.
The submarine dives
feet per hour.
PLS NEED HELP!A club had 5 members in 2019, this year they now have 14 members. Calculate and interpret the percent change in the number of members of the club from 2019 to 2020. ANSWER NEEDS TO BE IN PERCENT FORM!
Answer ok i will
Step-by-step explanation:
Help pls hw 14 and 15 mostly those the rest I’ll do
Answer:
Answer 14
Step-by-step explanation:
answer 37.38
Roberto has $200 in spending money. He wants to buy some video games that cost $25.50 each. Write and solve an inequality to find the number of games that Roberto can buy.
Step-by-step explanation: Each game is $25.50 which in math means it has an "x"
So if x=1 then 25.50x says that 1 video game is $25.50
Set up the equation:
200 = 25.50x (divide both sides by 25.50 to isolate the x)
200/25.50 = 7.84
x = 7.84
You can't have 0.84 of a video game, so Roberto can only buy 7 of them. The answer is correct good job!
The number of games that Roberto can buy [tex]\boldsymbol{8}[/tex] video games.
"To understand the calculation, check below."
Solve an InequalityWhen two values are compared, an inequality shows whether one is less than, greater than, or simply not equal to the other.
It's a relation that compares two integers or other mathematical expressions in a non-equal way.
Total amount with Roberto [tex]=\$ 200[/tex]
Let [tex]x[/tex] denotes number of games that Roberto can buy.
Cost of each video game [tex]=\$25.50[/tex]
So,[tex]25.50x\leq 200\\x\leq 7.8[/tex]
Therefore, Roberto can buy [tex]\boldsymbol{8}[/tex] video games.
Find out more information about inequality here:
https://brainly.com/question/18929468?referrer=searchResults
8 + 7x - x2=0 in factoring
Answer:
=−1
=8
Step-by-step explanation:
Can u answer and I will give brainliest can u solve them
Answer:
i dont see the answer can u resend the picture clearly?
Step-by-step explanation:
Answer:
59.4÷3 is 19.8 the other one i cannot see
m=3 through (-1,-4) ............ (slope intercept equation)
Answer:
y=3x-1
Step-by-step explanation:
If you take a number, times by 5 then add 7. You get the same as if you took the number, times by 9 then add 3. What is the number?
Answer:
5_7=2 9_3=6. 5+7=12 9+3=12
Step-by-step explanation:
Answer:
I got 291. And my number was 5.
Step-by-step explanation:
DAILY MATH QUESTIN
SOLVE THE PROBLEM
Answer:
The answer is 9
Answer:
Nine
Step-by-step explanation:
Which situations accurately describe a ratio of 5/8 ? Select all that apply. Tobias picked five daisies and eight roses. Sally found five green fruit loops in her cereal bowl, out of every thirteen pieces. Aly painted eight trees for every three birds. For every eight shots, Micah made five basket
The ratio of Tobias picked five daisies and eight roses will be 5/8. Then the correct option is A.
What are ratio and proportion?A ratio is a collection of ordered integers a and b represented as a/b, with b never equaling zero.
The ratio is 5/8.
Tobias picked five daisies and eight roses.
Then the ratio will be 5/8.
Sally found five green fruit loops in her cereal bowl, out of every thirteen pieces.
Then the ratio will be 5/13.
Aly painted eight trees for every three birds.
Then the ratio will be 8/(3 × 8) or 1/3.
For every eight shots, Micah made five baskets.
Then the ratio will be 8/5.
Then the correct option is A.
More about the ratio link is given below.
https://brainly.com/question/14335762
#SPJ1
What's the answer to this problem 9x - 10=26
Answer:
x=4
Step-by-step explanation: