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2 years ago

10

Is a 90° angle perpendicular

2 answers:

Dima020 [189]2 years ago

7 0

Answer:

yes

Step-by-step explanation:

SCORPION-xisa [38]2 years ago

4 0

Answer:

If you're asking about the lines then yes since perpendicular lines intersect at a right or 90 degree angle.

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Divide using long division

mestny [16]

5p squared - 2p - 8 - 8 over p+3

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2 years ago

Amber is 48 inches tall and her friend Lucy is 60 inches tall. In a photograph of them together, Amber is 3 inches tall. Which p

irina [24]

The answer would be the Last option (D). This because it poses the proportion of 48 in (Amber's height) / 60 in (Lucy's height) and puts it equal to the proportion of x (what is Amber's height in the photo) / 3 (what is Lucy's height in the photo. Hope this helps :)

4 0

2 years ago

Which ordered pair is a solution to the system of linear equations 1/2x-3/4y=11/60 and 2/5x+1/6y=3/10

natka813 [3]

ANSWER

$( \frac{2}{3} , \frac{1}{5} )$

EXPLANATION

The first equation is

$\frac{1}{2} x - \frac{3}{4} y = \frac{11}{60} ...(1)$

The second equation is

$\frac{2}{5} x + \frac{1}{6} y = \frac{3}{10} ...(2)$

We want to eliminate y, so we multiply the first equation by

$\frac{4}{5}$

$\frac{4}{5} \times \frac{1}{2} x - \frac{4}{5} \times \frac{3}{4} y = \frac{11}{60} \times \frac{4}{5}$

$\frac{2}{5} x - \frac{3}{5} y = \frac{11}{75} ...(3)$

We now subtract equation (3) from (2)

$(\frac{2}{3} x - \frac{2}{3} x )+ ( \frac{1}{6} y - - \frac{3}{5}y ) =( \frac{3}{10} - \frac{11}{75} )$

$\frac{1}{6} y + \frac{3}{5}y =\frac{3}{10} - \frac{11}{75}$

$\frac{23}{30}y = \frac{23}{150}$

Multiply both sides by

$\frac{30}{23}$

$\implies \: \frac{30}{23} \times \frac{23}{30}y= \frac{23}{150} \times \frac{30}{23}$

$\implies \: y = \frac{1}{5}$

Substitute into the first equation to solve for x .

$\frac{1}{2} x - \frac{3}{4} \times \frac{1}{5} = \frac{11}{60}$

Multiply to obtain

$\frac{1}{2} x - \frac{3}{20} = \frac{11}{60}$

$\frac{1}{2} x = \frac{11}{60} + \frac{3}{20}$

$\frac{1}{2} x = \frac{1}{3}$

Multiply both sides by 2.

$2 \times \frac{1}{2} x =2 \times \frac{1}{3}$

$x = \frac{2}{3}$

The solution is

$( \frac{2}{3} , \frac{1}{5} )$

5 0

2 years ago

Read 2 more answers

Which describes the cross section of a square prism that passes through vertices A, B, and C? A square prism. The cross section

forsale [732]

Answer:

D is wrong its C

Step-by-step explanation:

I just took the test and c was wrong its D and if its neither let me know.

6 0

3 years ago

What is the answer to 4[5(12 3)-2]-7

AleksandrR [38]

4[5(12*3)-2]-7 4[5(36)-2]-7 4[180-2]-7 4[178]-7 712-7= 705 :)

6 0

2 years ago