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3 years ago

Help!! For question just posted

Mathematics

1 answer:

bulgar [2K]3 years ago

4 0

You’re gonna have to show the graph

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Which students line segments have a midpoint of (-1,4)? Select all that apply A. Student 1 B. Student 2 C. Student 3 D. Student

SashulF [63]

Answer:

C. Student 3

E. Student 5

Step-by-step explanation:

we know that

The formula to calculate the midpoint between two points is equal to

$M(\frac{x1+x2}{2},\frac{y1+y2}{2})$

Verify the midpoint of each student

student 1

we have the endpoints

(-9,0) and (11,-8)

substitute in the formula

$M(\frac{-9+11}{2},\frac{0-8}{2})$

$M(1,-4)$

The midpoint is not (-1,4)

student 2

we have the endpoints

(-6,-1) and (4,-7)

substitute in the formula

$M(\frac{-6+4}{2},\frac{-1-7}{2})$

$M(-1,-4)$

The midpoint is not (-1,4)

student 3

we have the endpoints

(-5,2) and (3,6)

substitute in the formula

$M(\frac{-5+3}{2},\frac{2+6}{2})$

$M(-1,4)$

The midpoint is equal to (-1,4)

student 4

we have the endpoints

(-3,10) and (5,-2)

substitute in the formula

$M(\frac{-3+5}{2},\frac{10-2}{2})$

$M(1,4)$

The midpoint is not (-1,4)

student 5

we have the endpoints

(0,-3) and (-2,11)

substitute in the formula

$M(\frac{0-2}{2},\frac{-3+11}{2})$

$M(-1,4)$

The midpoint is equal to (-1,4)

therefore

Student 3 and student 5

3 0

4 years ago

3.41 rounded to the nearest tenth please help

horrorfan [7]

Your answer would be 3.4

Anything under 5 it stays the same and anything over 5 it goes up one

5 0

3 years ago

Read 2 more answers

Determine the measure of the indicated angle in the following triangle:

devlian [24]

Answer:

Θ ≈ 58°

Step-by-step explanation:

using the Cosine Rule in the triangle

cosΘ = $\frac{80^2+60^2-70^2}{2(80)(60)}$ = $\frac{64000+3600-4900}{9600}$ = $\frac{5100}{9600}$ = $\frac{51}{96}$ , then

Θ = $cos^{-1}$ ( $\frac{51}{96}$ ) ≈ 58° ( to the nearest degree )

3 0

2 years ago

It takes 12 men 5 days to complete a job. Work out how many days it would take 3 men to complete the same job.

frutty [35]

Answer:

20 days

Step-by-step explanation:

It takes 12 men 5 days to complete a job. Work out how many days it would take 3 men to complete the same job.

12 * 5 = 60

60/3 = 20

It will take 3 men 20 days to do the same job

3 0

3 years ago

15 percent of what number is 12

blagie [28]

12÷15=160
you have to divide 12 by 15 percent to get the missing number

5 0

3 years ago

Read 2 more answers