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liq [111]
3 years ago
11

The length of the rectangle is twice the width. Find the length of the rectangle if the perimeter is 42m.

Mathematics
1 answer:
kompoz [17]3 years ago
8 0

Answer:

28m

Step-by-step explanation:

2x+x=42

3x=42

x=14

However, since the length of the rectangle is twice the width, we'll need to multiply it by 2.

So: 14 times 2=28

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If you flip three fair coins, what is the probability that you’ll get all three heads?
Sladkaya [172]

Answer:

3/6

Step-by-step explanation:

no idea if its right

5 0
3 years ago
A. 3 <br>B. 10<br>C. 20<br>D. 30​
Dahasolnce [82]

<u>Answer:</u>

<h2>D. 30</h2>

<u>Explanation:</u>

292/100×9.9 = 2.92×9.9 = <u>28.908</u>

30 is closest to 28.908

3 0
2 years ago
What is the product of the fractions below?<br> 3/4x 7/5
schepotkina [342]

Answer: 12

Step-by-step explanation:

4 0
3 years ago
I need help with all of them and if you can't help with all of them just answer one of them please. Look at the picture
likoan [24]
All you have to do is substitute the y value from the 1st equation into the second equation and solve...

a) y= 2-x
5x + 4y = 5

Substitute (2-x) into the second equation anywhere there is a y...

5x + 4y = 5
5x + 4(2-x) = 5

Now solve

5x + 8 - 4x = 5
5x - 4x + 8 = 5
x + 8 = 5
x = -3

Now that you have a solution for x, substitute -3 into either of the original equations anywhere there is an x then solve for y...

y = 2 - x
y = 2 - (-3)
y = 2+3 = 5

You solved for x and got -3 and solved for y and got 5, so your solution set is
(-3, 5).

Now check it by substituting both numbers into one of the original equations and you should have a true statement if it is correct...

y = 2 - x
5 = 2 - (-3)
5 = 2+3
5 = 5

True statement... it checks!


note* during the check, if the equation would have worked out to something like 2 = 5, then that is a false statement therefore the solution set would be wrong and you'd have to go back and find the mistake.
5 0
3 years ago
Find the value of x.<br> A. 3<br> B. 9<br> C. 0<br> D. 12
GenaCL600 [577]

Answer:

x=3

Step-by-step explanation:

(segment piece) x (segment piece) =   (segment piece) x (segment piece)

3x(x+1) = 4x(x)

Divide each side by x

3x(x+1)/x = 4x(x)/x

3(x+1) = 4x

Distribute

3x+3 = 4x

Subtract 3x

3x+3-3x= 4x-3x

3 =x

6 0
2 years ago
Read 2 more answers
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