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goldfiish [28.3K]
3 years ago
8

Can someone help me with 21 and 22 ??

Mathematics
2 answers:
liberstina [14]3 years ago
7 0
21. H) Subtract 4 from 9
22. D) comutative property of multiplication because we got two numbers multiplied that comuted
inna [77]3 years ago
3 0
Subtract 4 from 9 because parentheses first.
Commutative property because it just moved around
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· At Jefferson High School, 30% of students drive to school, 60% of students ride the bus to
Marrrta [24]

Answer:

Difference = 250 students

Step-by-step explanation:

Let the total number of students be x.

Given the following data;

% driving = 30%

% riding = 60%

% walking = 10%

Number of students driving = 375

First of all, we would determine the total number of students.

Total = 30/100 * x = 375

0.3x = 375

Total, x = 375/0.3

Total, x = 1250 students.

Next, we determine the number of students walking;

Walking = 10/100 * 1250

Walking = 12500/100

Walking = 125 students

Finally, we would determine many more students drive to school than walk to school;

Difference = 375 - 125

Difference = 250 students

3 0
3 years ago
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anzhelika [568]
I think it would be 17.5
3 0
3 years ago
Irina ran 0.25 mile in 2 minutes. At this rate, how many minutes will it take her to run 2 miles?
scoray [572]

Answer:

16

Step-by-step explanation:

 2/0.25 = 8

2 x 8 = 16

4 0
3 years ago
Read 2 more answers
Which number produces an rational number when multiplied by 1/5
Sunny_sXe [5.5K]

Answer:

2 rational numbers i believe

Step-by-step explanation:


4 0
3 years ago
T varies inversely with the cube of W. When W is 3, T is 1/9. Find the value of W when T is 1/243
Lera25 [3.4K]
T varies inversely with the cube of W 

T = k/W^3

\frac{1}{9} = k/3^3

k = \dfrac{3^3}{9} = 3

W^3 = k/T

W = \sqrt[3]{ k/T }

When T=1/243

W = \sqrt[3]{ 3/(1/243)}= \sqrt[3]{729} = 9


5 0
3 years ago
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