Determine which statement or statements are true.

Mathematics

1 answer:

alekssr [168]3 years ago

5 0

A. False. There are 8 texts for every 5 calls made.

B. False. The ratio of texts to calls is 8:5, instead of 5:8

C. True. You just write the numbers 8 and 5 separated with a colon.

D. True. This is the same as saying "forever 8 texts, there were 5 calls"

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Which expression is equivalent to the expression shown?

mixas84 [53]

Answer:

7 to the 12th power. (The last one.)

Step-by-step explanation:

When dividing expressions with the same base you need to subtract the powers. In this case subtract 2 from 14 which makes 12. So your answer will be 7^12.

5 0

3 years ago

Read 2 more answers

Please help as soon as possible

Luda [366]

EQUATION 1: x-y=12
EQUATION 2: 3x+y=4

STEP 1:
solve for one variable in equation 1

x - y= 12
add y to both sides

x= 12 + y

STEP 2:
use x value from step 1 and substitute in equation 2

3x + y= 4

3(12 + y) + y= 4
multiply 3 by parentheses

(3*12) + (3*y) + y= 4
multiply inside parentheses

36 + 3y + y= 4
combine like terms

36 + 4y= 4
subtract 36 from both sides

4y= -32
divide both sides by 4

y= -8

STEP 3:
substitute y value from step 2 into either equation

x - y= 12
x - (-8)= 12
x + 8= 12
subtract 8 from both sides
x= 4

CHECK:
x= 4, y= -8

3x + y= 4
3(4) + (-8)= 4
12 - 8= 4
4= 4

ANSWER: The x value is 4 and the y value is -8.

Hope this helps! :)

5 0

4 years ago

B) A white shirt costs $. 2.50, and a blue shirt costs $. 1.50

djyliett [7]

<h3>Answer :</h3>

Cost of white shirt = 2.50 $

Cost of blue shirt = 1.50 $

We have asked to find percentage difference $.$