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Gelneren [198K]

3 years ago

14

In a class of 500 students a hundred and sixty have 320 have brown eyes and 20 green in a class of 25 students how many would ha

ve blue eyes

1 answer:

saveliy_v [14]3 years ago

4 0

Is your question right because you said 500 students a hundred and sixty have 320 have brown eyes?

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can you help me with number nine it says find the slope of the line that passes through each pair of points

Hatshy [7]

How to find slope?

Slope is represented as m

If two point are

(x_1,y1)
(x2,y2)

Slope is given by

$\\ \sf\longmapsto Slope=m=\tan\Theta=\dfrac{y_2-y_1}{x_2-x_1}$

5 0

3 years ago

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Prove algebraically that (m + 2)2 – m 2 – 12 is always a multiple of 4

Julli [10]

Answer:

$(m + 2)^{2} - m^{2} - 12 = 4(m - 2)$

Step-by-step explanation:

Step 1:

Write the expression

$(m+2)^{2} - m^{2} - 12$

Step 2: Expand $(m + 2)^{2}$

$(m+2)^{2} - m^{2} - 12\\(m+2)(m+2) - m^{2} - 12\\m^{2} + 2m + 2m + 4 - m^{2} - 12$

Step 3: Collect similar terms

$m^{2} - m^{2} + 4m + 4 - 12\\4m - 8$

Step 4: Factor 4 out of the expression to prove that the expression is a multiple of 4.

$Therefore\\4m - 8 = 4(m - 2)\\Hence,\\(m+2)^{2} - m^{2} - 12 is a multiply of 4 because the expression is equal to 4(m-2)$

3 0

3 years ago

You are given a number line with a left endpoint R, a point in between the two endpoints (not a midpoint though) of S, and a rig

Nina [5.8K]

You just add the lengths of RS and ST together. In your case RT= 24

3 0

2 years ago

Y varies directly as x. If x = 15 when y = 20, find x when y = 30.

Goryan [66]

Answer:

22.5

Step-by-step explanation:

y=kx

20=k15

k=1•33

30=1•33x

x=22•5

5 0

3 years ago

The following table shows the number of snow days each school district in Mill County had last winter.

shtirl [24]

Answer:

The answer is 5.

Step-by-step explanation:

7 0

3 years ago

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