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4 years ago

13

How do you simplify the ratio 30mL:45mL

1 answer:

kramer4 years ago

4 0

35/45=7/9 the slashes means they are the fractions

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Avani is building a rectangular play area. The length of the play area is 7.5 meters. The width of the play area is 5.3 meters.

const2013 [10]

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3 years ago

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Find three numbers between-0.15 and -0.14

Elanso [62]

-0.145, -0.148, -0.141

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Make x the subject of the formula a(x+b)=c<br>pls help meeeee

velikii [3]

Answer: c(a+ab)=x

Step-by-step explanation:

a(x+b)=c distribute the (a)

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3 years ago

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A school is planning to construct two rectangular play areas in the playground. The length of play area A must be 1 foot longer

Anna11 [10]

Answer:

А.The system has two solutions, but only one is viable because the other results in a negative width.

Step-by-step explanation:

Given

Let:

$L_A \to$ length of play area A

$W_A \to$ width of play area A

$L_B \to$ length of play area B

$W_B \to$ width of play area B

$x \to$ Area of A

$y \to$ Area of B

From the question, we have the following:

$L_A = 1 + 4W_A$

$W_B = 2 + W_A$

$L_B = 2 + 3W_B$

$x = y$

The area of A is:

$x = L_A * W_A$

This gives:

$x = (1 + 4W_A) * W_A$

Open bracket

$x = W_A + 4W_A^2$

The area of B is:

$y = L_B * W_B$

$y = (2 + 3W_B) * ( 2 + W_A)$

Substitute: $W_B = 2 + W_A$

$y = (2 + 3(2 + W_A)) * ( 2 + W_A)$

Open brackets

$y = (2 + 6 + 3W_A) * ( 2 + W_A)$

$y = (8 + 3W_A) * ( 2 + W_A)$

Expand

$y = 16 + 8W_A + 6W_A + 3W_A^2$

$y = 16 + 14W_A + 3W_A^2$

We have that:

$x = y$

This gives:

$W_A + 4W_A^2 = 16 + 14W_A + 3W_A^2$

Collect like terms

$4W_A^2 - 3W_A^2 + W_A -14W_A - 16 =0$

$W_A^2 -13W_A - 16 =0$

Using quadratic calculator, we have:

$W_A = -14.1$ or $W = 1.13$ --- approximated

But the width can not be negative; So:

$W = 1.19$

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3 years ago

Simplify (2x + 5y)(3x – 7y) - 2xy<br> Helpppp

storchak [24]

If you want a faster way to get these things solved, use the math papa algebra calculator

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