3 years ago

Select the choice that translates the following verbal phrase correctly to algebra: y less than 21

2 answers:

5 0

21-y
This is because it says "less than" which is a way to say subtraction. So if you want y less than 21 it would be written as 21-y.

Romashka [77]3 years ago

3 0

Y (y) less than (minus) 21 (21
y-21

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kicyunya [14]

Well , its upside down...

4 0

3 years ago

A rectangle has a length of 12 yards less than 3 times its width. If the area of the rectangle is 135 square yards, find the len

Aleonysh [2.5K]

Answer:

The length is 15 yards

Step-by-step explanation:

Given

Represent the width with W and length with L: So

$Area = 135yd^2$

$L=3W - 12$

Required

Determine the length of the rectangle:

Area is calculated as thus:

$Area = L * W$

Substitute 3W - 12 for L and 135 for Area

$135= (3W - 12) * W$

$135= 3W^2 - 12W$

Reorder:

$3W^2 - 12W - 135= 0$

Divide through by 3

$W^2 - 4W - 45 = 0$

Expand:

$W^2 - 9W + 5W - 45 = 0$

$W(W - 9) + 5(W - 9) = 0$

$(W + 5)(W-9) = 0$

$W + 5 = 0$ or $W - 9 = 0$

$W = -5$ or $W = 9$

But width can't be negative

So:

$W = 9$

Recall that: $L=3W - 12$

$L = 3 * 9 - 12$

$L = 15$

<em>Hence, the length 15 yards</em>

4 0

3 years ago

These are the fees for sending a package by Media Mail: $2.41 for the first pound $0.41 per additional pound for the next six po

den301095 [7]

2.41+6(0.41)+(lb-7)0.39=7.99

2.41+2.46-2.73+0.39lb=7.99

0.39lb=5.85

lb=15

The package of books weights 15 pounds...

3 0

3 years ago

Shapes I and II are <br> neither congruent nor similar<br> .

GarryVolchara [31]

Answer: They are similar but not congruent.

Step-by-step explanation: hope this help

7 0

2 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B-8%2F27%7D%20%3D%20-2%2F3" id="TexFormula1" title="\sqrt[3]{-8/27} = -2/3" al

sasho [114]

The equation is true because both sides are identical.

5 0

3 years ago