3 years ago

D

Mathematics

1 answer:

4vir4ik [10]3 years ago

3 0

28 should be added to make it a sub of zero

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. Melinda was planting a flower bed in the shape of a rectangle. The length of the flower bed was 8 feet and the width was 7 fee

ladessa [460]

Area or a rectangle- length*width
7*8=56 feet

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3 years ago

Shannon evaluated the expression 9-6+12÷(3×2) and got the answer 14. Is she correct?

Sophie [7]

It's wrong the answer is 5.

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3 years ago

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Evaluate u/z + xy^2 for u = 20, x = 4, y = 7, z = 10.<br> a. 786<br> b. 198<br> c. 294<br> d. 900

Katena32 [7]

The answer is letter B.
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Download docx

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3 years ago

Find the slope of the line that contains the points (-9, -3) and (-19, -3).

NNADVOKAT [17]

Answer:

Slope (m) = 0

Step-by-step explanation:

We will use this formula to find the slope⤵⤵⤵

$\frac{y _{2} - y _{1} }{x _{2} - x _{1} }$

(Sorry if it's a bit small btw)

Now we plug in the values accordingly:

-3 - (-3) = -3 + 3 = 0

-19 - (-9) = -19 + 9 = -10

Slope = 0/-10

So we have 0/-10, which means our slope is actually just 0.

(This also means that the line on the graph will be horizontal.)

Hope this helps you :)

7 0

3 years ago

If t varies as v, and t = 2 4/7 when v =13/14 , find v when t = 2 1/4

maks197457 [2]

Answer : b) 13/16

Given : t varies as v

So t = k v where k is the constant of proportionality.

t = 2 4/7 when v =13/14. Using these values we find out k

$t = 2\frac{4}{7} =\frac{18}{7}$

$v =\frac{13}{14}$

t = k * v

$\frac{18}{7}= k *\frac{13}{14}$

Multiply by 14/13 on both sides

$\frac{18}{7} *\frac{14}{13} = k *\frac{13}{14}*\frac{14}{13}$

So $k =\frac{36}{13}$

We got the value of k. Now we find v when t = 2 1/4

$t = 2\frac{1}{4} =\frac{9}{4}$

t = k * v

We know the value of t and k

$\frac{9}{4}= \frac{36}{13}* v$

Multiply by 13/36 on both sides

$\frac{9}{4} *\frac{13}{36} =\frac{36}{13}*\frac{13}{36}* v$

So $\frac{13}{16}= v$

Option B is correct

4 0

3 years ago