3 years ago

I need help with this.

Mathematics

1 answer:

mrs_skeptik [129]3 years ago

6 0

The answer to the question. Estimated at 60,000

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Determine the value of the variable that makes the equation true. 12-b=12.5

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Answer:

B = -.5

Step-by-step explanation:

If B is negative is cancels out the prexisting negative making it positive.

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2 years ago

I NEED HELP

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You can use a number line to subtract -6 from -7. The difference is -1.

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The equation 4(x – 3)2 – 5 = 139 has two solutions: one positive and one negative. What is the

AlekseyPX

Answer:

Step-by-step explanation:

4(x-3)2-5 = 139

(4x-12)-5=139

-20x + 60 = 139

-20x +60 - (60) = 139- 60

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2 years ago

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IRINA_888 [86]

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3 years ago

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The length of a rectangle picture frame is 2 centimeters more than twice it’s width. If the area of the frame is 364 square cent

sergeinik [125]

Answer:

Length:28 cm

Width: 13 cm

Step-by-step explanation:

Let

x ---> the length of a rectangle picture frame

y ---> the width of a rectangle picture frame

we know that

The area of a rectangle picture frame is equal to

$A=xy$

we have

$A=364\ cm^2$

$364=xy$ ----> equation A

The length of a rectangle picture frame is 2 centimeters more than twice it’s width

$x=2y+2$ ---> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (28,13)

see the attached figure

therefore

Length:28 cm

Width: 13 cm

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3 years ago