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Amanda [17]
2 years ago
6

What is the perimeter of ^PQR with vertices P(-2,9) Q(7,-3) and R(-2,-3) in the coordinate plane?

Mathematics
1 answer:
lukranit [14]2 years ago
6 0
Do I need to show my work?
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Find the range f(x) =-2x-5 for the domain (-2,-1,1,2).
iVinArrow [24]

Answer:

{ - 9, - 7, - 3, - 1 }

Step-by-step explanation:

To obtain the range substitute the values of x from the domain into f(x)

f(- 2) = - 2(- 2) - 5 = 4 - 5 = - 1

f(- 1) = - 2(- 1) - 5 = 2 - 5 = - 3

f(1) = - 2(1) - 5 = - 2 - 5 = - 7

f(2) = - 2(2) - 5 = - 4 - 5 = - 9

range is { - 9, - 7, - 3, - 1 }

8 0
2 years ago
2x(5-x)+3x^2 <br> shown work please
nekit [7.7K]

\\ \rm\Rrightarrow 2x(5-x)+3x^2

\\ \rm\Rrightarrow 10x-2x^2+3x^2

\\ \rm\Rrightarrow 10x+(-2+3)x^2

\\ \rm\Rrightarrow 10x+x^2

\\ \rm\Rrightarrow x^2+10

5 0
2 years ago
Read 2 more answers
You estimate that a jar contains 68 marbles. The actual number of marbles is 60. find the percent error.
USPshnik [31]
Well not too sure but the diference is 8 and 60 is nearly half of 100 so I would say around 15
4 0
3 years ago
Read 2 more answers
A:b= 5:8 and b:c=6:25<br> Find, in its simplest form, the ratio a:b:c
Ann [662]

Answer:

a:b:c = 15:24:100.

Step-by-step explanation:

We need to make the values of b the same in both ratios so we multiply b = 6 by 4/3 to make it 8 and also multiply 25 by 4/3.

6  25 = 8 : 33.33......

So a:b:c = 5:8:33.33...

To convert to whole numbers we multiply by 3:

a:b:c = 15:24:100.

7 0
3 years ago
Help please will give brainliest
alex41 [277]
<h2>Answer:</h2>

<u>Cost of basketball sneakers with tax</u> = $96.12

<u>Amount of tax</u> = 8% of cost price

= 8/100 × 96.12

= $7.6896.

<u>Cost of sneakers without tax</u> = $96.12 - $7.6896.

= $88.43.

4 0
2 years ago
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