2 years ago

Help help area and perimeter

Mathematics

1 answer:

natita [175]2 years ago

4 0

Answer:

Perimeter= 49

area= 360

Step-by-step explanation:

perimeter means you need to add 40+9 and area means you must multiple the numbers.

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What is 3(m + 4) -12=-15

Crazy boy [7]

Answer:

m equals -5

Step-by-step explanation:

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3 years ago

Find the coordinates of the midpoint of (x,y) for A(9,1) and B(3,7)

tekilochka [14]

9514 1404 393

Answer:

(6, 4)

Step-by-step explanation:

The midpoint is found as the average of the coordinates of the end points.

M = (A +B)/2

M = ((9, 1) +(3, 7))/2 = (9+3, 1+7)/2 = (12, 8)/2

M = (6, 4)

The midpoint of segment AB is (x, y) = (6, 4).

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3 years ago

Consider the isosceles triangle below where the side lengths are given in cm:

DiKsa [7]

Answer:

I think is B

because its the one that sounds good

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2 years ago

What is the solution for −40 = 10c? <br> A. c = 1 <br> B. C = -1 <br> C. c = -4 <br> D. c = 4

Aleks [24]

Answer:

C. c = -4

Step-by-step explanation:

you must get c by itself. you have to divide both sides by 10. this gets rid of the 10c and keeps both sides equal

-40/10 = c

c = -4

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2 years ago

The length of line PQ is 7.5 inches. what is the absolute error of the measurement?

Rashid [163]

Answer:

The absolute error of the measurement is 0.25 inches

Step-by-step explanation:

we know that

The absolute error of a measurement is equal to one half the unit of measure.

In this problem we have

7.5 inches

The measurement is given by 0.5 inches

the absolute error of this measurement is

$\frac{1}{2}(0.5)=0.25\ in$

Therefore

the exact measurement could be between

7.5 (+/-) 0.25 in

That is, between 7.25 in and 7.75 in

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2 years ago