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3 years ago

Q=(c+d)/2 solve for d

1 answer:

8 0

Q=(c+d)/2
Multiply both sides by 2 to get rid of the 2
2×q=(c+d)
Subtract c from both sides to get rid of the c
2×q-c=d
Flip the equation around
d=2×q-c

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Which decimals as the same value as 2 divided by 5

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anything that ends in 0 like .10

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2 years ago

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I need help for this to pass my last math class please help and show your work

Maksim231197 [3]

-12 + 3x + 2 = 5x - 10 - 8x
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3 years ago

Who knows this A. cube root B. square root C. square D. cube

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Step-by-step explanation:

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3 years ago

a highway measures 58 and 1/2 miles long. There will be a speed limit sign posted every two one six miles. How many speed limit

Solnce55 [7]

a highway measures 58 and 1/2 miles long.there be a speed limit sign posted every two one six miles.How many speed limit signs Will be on the highway 

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2 years ago

Help me please can you model this for me I need SERIOUS HELP ASAP? And correct my answer PLEASE and thank you!

Maksim231197 [3]

What do I need to find?

Your answer is correct.

What information do I need to use?

100% = 240 miles, she has already driven 15% of 240, so she has driven x miles.

How will I use the information?

Set up a proportion. If she has already driven 15% out of 100% of the distance, then you should write $\frac{15}{100}$ for the first fraction. This is proportional to $\frac{x(miles)}{240(miles)}$ . This means that $\frac{15}{100} = \frac{x}{240}$ . Wait, but this is confusing. How on Earth do we solve it? Let's take a closer look. If $\frac{x}{240}$ is supposed to equal 15/100, then this means that x/240 divided by 15/100 should give us the answer. So, even though it looks complicated, all you have to do is cross multiply like this:

$\frac{15}{100} = \frac{x}{240} --> 240 * 15 = 100x --> 3600 = 100x$

Now isolate x:

$\frac{3600}{100} = \frac{100x}{100}$

So x = 36, which means she has already driven 36 out of 240 miles. Lucia still has to drive 204 miles to reach her destination.

1.) In this case, 56 = 100% and 25% of the sandwiches were tuna. This means that 75% of the sandwiches were not. If $\frac{25}{100} = \frac{x}{56}$ and you use the same method above, x is equal to 14. If 14 is 25% then that means the other 75% = 14 * 3. So 42 sandwiches were not tuna.

2.) $\frac{60}{100} = \frac{x}{450}$

--> $27000 = 100x$

---> $\frac{27000}{100} = \frac{100x}{100}$

He still has $270 left to pay.

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3 years ago