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3 years ago

HELP! 50 POINTS, PLUS 25+ IF YOUR ANSWER IS THE BEST!

Mathematics

1 answer:

stich3 [128]3 years ago

7 0

Answer:

Step-by-step explanation:

1. rotation 90 degrees clockwise

2.reflection over y axis

3.rotation 180

4.reflection over x axis

5.rotation 90 degrees counter clockwise

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A and B can separately do a piece of work in 24 days and 16 days respectively. They worked together for 6 days, after which B wa

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 :)

7 0

3 years ago

Which unit would you use to measure the time it would take to fly across the country?

vovikov84 [41]

I think it would be hours

5 0

3 years ago

Read 2 more answers

A is inversely proportional to b. If a=7.2 when b=-4, what will a equal when b=6?

Tpy6a [65]

Answer:

Step-by-step explanation:

To find the value of a when b=6 we must first find the relationship between them.

The statement

a is inversely proportional to b is written as

$a \: \: \alpha \: \: \frac{k}{b}$

where k is the constant of proportionality

When a = 7.2 , b = -4

So we have

$7.2= \frac{k}{ - 4}$

k = 7.2 × - 4

k = - 28.8

So the formula for the variation is

$a = - \frac{28.8}{b}$

When

b = 6

That's

$a = - \frac{28.8}{6}$

We have the final answer as

Hope this helps you

7 0

4 years ago

What's the inequality for 15x + 21 ≥ 120

Andrei [34K]

X>= 6.6 is your answer

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3 years ago

Solve for x x/12−1=−6<br><br>x=

Alik [6]

Answer:

X=? Sorry

Step-by-step explanation:

7 0

3 years ago

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