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sp2606 [1]
2 years ago
10

can anyone help me out here? I will pay you 20 points

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
8 0

Answer:

The ordered pair that makes an equation true is called a solution

a)solution

b) not a solution

c) solution

d) solution

e)not a solution

f) not a solution

g) solution

h) not a solution

Step-by-step explanation:

The first number in an ordered pair is x, the second one is y

Plug in the numbers to x and y respectively

I'll give two examples so you know how to solve it

a) y=3x+1

-5=3(-2)+1

make sure you use pemdas (multiply first)

-5=-6+1

add

-5=-5

this is true (meaning it is a solution)

b) 6=3(-3) +1

6=-9+1

6 = -8

this is NOT true (not a solution)

If you have any questions feel free to ask

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The Average cost of a long distance call in the USA was 31 cents per minute in 1978 and 8 cents in 2008. Find the approximate pe
olya-2409 [2.1K]

Answer:

74%

Step-by-step explanation:

We have been given that the Average cost of a long distance call in the USA was 31 cents per minute in 1978 and 8 cents in 2008.

We will use percent decrease formula to solve our given problem.

\text{Percent decrease}=\frac{\text{Initial}-\text{Final}}{\text{Initial}}\times 100\%

\text{Percent decrease}=\frac{31-8}{31}\times 100\%

\text{Percent decrease}=\frac{23}{31}\times 100\%

\text{Percent decrease}=0.741935483\times 100\%

\text{Percent decrease}=74.1935483\%

\text{Percent decrease}\approx 74\%

Therefore, there is an approximate 74% decrease in cost per minute for the long distance call from 1978 to 2008.

4 0
3 years ago
WHY is the work they give us online harder than the work we get at school? SOMEBODY PLEASE HELP :(
Dmitry_Shevchenko [17]

Answer:

First question

Circle A:

Radius:2.5 Diameter: 5 Circumference:15.71

Circle B:

Radius:12 Diameter:24 Circumference:75.4

Circle C:

Radius:32 Diameter:64 Circumference:201.06

Circle D:

Radius:42 Diameter:84 Circumference:263.89

Second one:

without Pi

1:81.68

2:37.7

3:263.89

with pi

1:26π

2:12π

3:84π

sorry, i have to keep looking back at the photo

for the last question i will be solving ok

8 0
3 years ago
Miguel bought 2 1/4 pounds of hamburgers,1 1/5 pounds of sliced turkey ,and 2 pounds of cheese.what was the total weight of all
irinina [24]

the answer you are looking for is 5 9/20 pounds


sorry but it as to be twenty character

7 0
3 years ago
Which pair of numbers is relatively prime A.)57 and 96 B.)68 and 118 C.)70 and 195 D.)143 and 323
creativ13 [48]
I think is D , hope i answer fast enough haha :D
8 0
3 years ago
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A sea horse riding travels an average of 0.01 miles per hour. At that rate , how fast can a sea horse travel in 2.4 hours?
kondaur [170]
As for this problem, it would be best to approach this with a ratio to ratio approach. This would then involve the equation with fractions which is the common conversion from ratios to easily solve the problems concerning these. The equation then would look somehow like this:

0.01 miles / 1 hour = x miles / 2.4 hours

The easiest way would be just to multiply the numerator, which is the miles, to 2.4. So when it is multiplied to the numerator, the equation then would turn to:

0.01 miles x 2.4 / 1 hour = x miles / 2.4 hours

0.024 miles would be the answer.
5 0
3 years ago
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