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2 years ago

Can someone help me with my perfect square homework? thank you.

Mathematics

2 answers:

maw [93]2 years ago

5 0

Answer:

Step-by-step explanation:

Given

v² - 14v

To complete the square

add ( half the coefficient of the v- term )² to v² - 14v

v² - 14v + (- 7)²

= v² - 14v + 49

= (v - 7)² ← a perfect square

SCORPION-xisa [38]2 years ago

4 0

Answer:

Any better explanation

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Dominik [7]

Answer: C can complete the work in 12 days.

Step-by-step explanation:

Alright, lets get started.

Given that, A and B can separately do a piece of work in 24 days and 16 days respectively.

It means, in 1 day, A can complete the part of work : $\frac{1}{24}$

It means, in 1 day, B can complete the part of work : $\frac{1}{16}$

As they both worked together for 6 days,

in 6 days, A can complete the part of work : $6*\frac{1}{24}=\frac{1}{4}$

in 6 days, B can complete the part of work : $6*\frac{1}{16}=\frac{3}{8}$

So, together they had completed the work : $\frac{1}{4}+\frac{3}{8}=\frac{5}{8}$

So remaining work will be : $1-\frac{5}{8}$

So remaining work will be : $\frac{3}{8}$

Now this remaining work is done by A and C together.

Suppose C alone can do this work in C days.

So in 3 days, A and C completed the rest work :

$3 \times(\frac{1}{24}+\frac{1}{C})=\frac{3}{8}$

$\frac{1}{24}+\frac{1}{C}=\frac{1}{8}$

$\frac{1}{C}=\frac{1}{8}-\frac{1}{24}$

$\frac{1}{C}=\frac{1}{12}$

$C=12$

Hence C can complete the work in 12 days. : Answer

Hope it will help :)

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2 years ago

William had $45 dollars to spend on Vegetables. After buying 6 watermelons , he had $25.50 left .how much did each watermelons c

notka56 [123]

Easy, just do 45-25.50= 19.50 and then divide 19.50 by 6, and then you get 3.25. So, your answer would be $3.25.

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2 years ago

Which is more precise 5 kg or 5212 g

Dahasolnce [82]

5 kg is more precise because if you said 5212 g, they will be trying to see what the precise answer is so if you say 5 kg that will save all of the work.

P.S.: its not 5212 g, its 5000 g. :)

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2 years ago

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melomori [17]

Answer:

B i think

Step-by-step explanation:

sorry I'm not explaining I'm doing a challange

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2 years ago

Which of the following represents x =1/3y written in general form?

Serhud [2]

If you would like to write x = 1/3 * y in general form, you can do this using the following steps:

The general form of the equation is: ax + by + c = 0.

x = 1/3 * y

x - 1/3 * y = 0

The correct result would be x - 1/3 * y = 0.

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