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Alecsey [184]
3 years ago
9

Which of the following is not an equivalent expression to -12 - 7x?

Mathematics
1 answer:
Art [367]3 years ago
3 0
THE CORRECT ANSWER IS -7X+{-12}
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John has saved $150 and
Elden [556K]

First equation:

y=10x+150

y=25x

10x+150=25x

15x=150

x=10

so, 10 weeks

EDIT:

how many dollars dey save? dunno

jkkkkk

For John

150+10(10)=

150+100=

250

For Erin

They both equal

3 0
2 years ago
Read 2 more answers
What's the total Cents?
saveliy_v [14]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

Let's see...

Step-by-step explanation:

  • The first coin is a quarter.
  • The second, third, fourth, and fifth coins are dimes.
  • The sixth, seventh, and eighth coins are nickels.

That being said, what is the total value of the cents?

cents    =  ¢

<u>Values:</u>

Quarter = 25 ¢

Dime     = 10 ¢

Nickel   = 5 ¢

So,

1 quarter + 4 dimes + 3 nickels    = total cents

25 + 10 + 10 + 10 + 10 + 5 + 5 + 5 = total cents

25 + 40 + 5 + 5 + 5                       = total cents

25 + 40 + 15                                  = total cents

25 + 55                                         = total cents

80                                                  = total cents

<h3><em>Our answer is 80¢</em></h3><h3><em /></h3>

I hope this helps!

- sincerelynini

8 0
2 years ago
The fastest train in the Western Hemisphere is the Acela Express. On a route between Boston, Massachusetts, and New Haven, Conne
Vinil7 [7]
What answer is 75 is the correct answer
3 0
2 years ago
A car traveled 3⁄4 mile in one minute at constant speed. What was the speed of the car in miles per hour?
Dmitry [639]
3/4 mile is 0.75 mile per minute
There are 60 minutes in one hour
0.75 times 60 equals 45 miles
4 0
3 years ago
PART 1. HERE ARE THE NUMBERS I CAME UP WITH I JUST NEED THE REST DONE!!!
jarptica [38.1K]

Answer:

Part 2

The rate of change is 1 in increase in forearm length per 1 inch increase in foot length

Part 3

1) Foot length = 17.922 in.

2) The rate of change of the equation y = 0.860·x + 3.302 in part A is 0.860

3) No the data does not correspond with part A

4) The data  presented here has a greater rate of change

5) Different data sources

6) Yes

7) Yes

Step-by-step explanation:

Part 2

The data are as follows

Forearm             Foot

9.25                    8.5

10.25                   9.5

9.75                     9

10.75                    10

8.75                       8

To find the rate of change, we have;

For points

(x₁, y₁) = (9.25, 8.5) and (x₂, y₂) = (8.75, 8) we have;

Rate of change = (y₂ - y₁)/(x₂ - x₁) substituting the values we arrive at

(8.75 - 9.25)/(8 - 8.5) = 1

The rate of increase of foot to forearm is 1 to 1. That is there is an increase of 1 in in forearm length for every inch increase in foot length

The rate of change is 1 in increase in forearm length per 1 inch increse in foot length

Part 3

1) For a person with length of forearm, x = 17 inches long, we have;

Length of foot, y = 0.860·x + 3.302

Plugging in the values, we have;

y = 0.860×17 + 3.302 = 17.922 in.

2) The rate of change of the equation y = 0.860·x + 3.302 in part A is 0.860

3) No the data does not correspond with part A

4) The rate of change from part A = 0.860, Therefore, the data  presented here has a greater rate of change

5) The values are different because of they are derived from a non corresponding sources

6) Yes the relation is a function because the length of the foot is a function of the length of the forearm

From the equation of a straight line, we have;

y = mx + c

Where:

m = Slope = 1

Therefore; for forearm, y = 9.25, we have

9.25 = 1×8.5 + c

∴ c = 9.5 - 8.5 = 1

The equation of the function becomes;

y = x + 1

7) for the equation in part A given by

y = 0.860·x + 3.302

Yes the equation in part A can represent a function because it maps each value of x to a unique value of y

4 0
3 years ago
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