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joja [24]
3 years ago
10

-13y + 7 - 11 - 4y = -13y + 7

Mathematics
2 answers:
Shkiper50 [21]3 years ago
8 0

Answer:

y=-2.75

Step-by-step explanation:

vazorg [7]3 years ago
8 0

Answer:

y=2.75

Step-by-step explanation:

explanation in pic

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Ernesto solves the equation below by first squaring both sides of the equation. \sqrt{\dfrac{1}{2}w+8}=-2 2 1 ​ w+8 ​ =−2square
algol [13]

Answer:

<h2>w = -8</h2>

Step-by-step explanation:

Given the equation solved by Ernesto expressed as \sqrt{\dfrac{1}{2}w+8}=-2, the extraneous solution obtained by Ernesto is shown below;

\sqrt{\dfrac{1}{2}w+8}=-2\\\\square\ both \ sides \ of \ the \ equation\\(\sqrt{\dfrac{1}{2}w+8})^2=(-2)^2\\\\\dfrac{1}{2}w+8 = 4\\\\Subtract \ 8 \ from \ both \ sides\\\\\dfrac{1}{2}w+8 - 8= 4- 8\\\\\dfrac{1}{2}w= -4\\\\multiply \ both \ sides \ by \ 2\\\\\dfrac{1}{2}w*2= -4*2\\\\w = -8

Hence, the extraneous solution that Ernesto obtained is w = -8

4 0
3 years ago
The area if a rectangle is 53.6cm^2.If the length is multiplied by four and the width is halved, the area would then be?
e-lub [12.9K]

Answer:

26.8cm²

Step-by-step explanation:

the area if a rectangle is 53.6cm^2.If the length is multiplied by four and the width is halved, the area would then be?​

Area of rectangle = length x width

53.6 = 4L x 1/2 W

53.6 = 2L × W

Divide both sides by 2

L × W = 53.6 ÷ 2

New area  = 26.8cm²

I hope this was helpful, please mark as brainliest

5 0
4 years ago
PLEASE HELP QUICK
taurus [48]

Answer:

a=1/2  b=5/4  c=2^5/4 . ??

Step-by-step explanation:

I am not sure if the a is supposed to be a second exponent but I solved this as if it wasn't.

8 0
3 years ago
Read 2 more answers
PLESE HELP I WILL MARK BRAINEST PLEASE
FrozenT [24]

Answer:

a) 23.0769% increase

b) 9.375% decrease

Step-by-step explanation:

7 0
3 years ago
Please answer this in two minutes
alisha [4.7K]

Answer:

WX = 7.9

Step-by-step explanation:

By applying tangent rule (law of tan) in the given right triangle WXY.

tan(W) = \frac{\text{Opposite side}}{\text{Adjacent side}}

tan(27)° = \frac{\text{XY}}{\text{WX}}

0.509525 = \frac{4}{\text{WX}}

WX = \frac{4}{0.509525}

WX = 7.85

WX ≈ 7.9

Therefore, length of side WX is 7.9 units.

3 0
3 years ago
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