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Fantom [35]
3 years ago
7

WILL MARK BRAINLIEST FOR BEST ANSWER

Mathematics
2 answers:
azamat3 years ago
7 0
56cm

Perimeter: 30cm
Width: 7cm

7+7+?+?
30-14=16

?=8

Area= 56cm
marin [14]3 years ago
5 0

Answer:

Hey,

your answer is   56cm^2


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13y-1 = 24                                     2x-7 = 39

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13y = 25                                          2x = 46

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3 0
2 years ago
Read 2 more answers
Solve for x in the equation.
labwork [276]

Answer:

The solution is \displaystyle x=1\pm \sqrt{47}. Fourth option

Explanation:

Solve for x:

2x^2+3x-7=x^2+5x+39

Move all the terms from the right to the left side of the equation, a zero in the right side:

2x^2+3x-7-x^2-5x-39=0

Join all like terms:

x^2-2x-46=0

The general form of the quadratic equation is:

ax^2+bx+c=0

Solve the quadratic equation by using the formula:

\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

In our equation: a=1, b=-2, c=-46

Substituting into the formula:

\displaystyle x=\frac{-(-2)\pm \sqrt{(-2)^2-4(1)(-46)}}{2(1)}

\displaystyle x=\frac{2\pm \sqrt{4+184}}{2}

\displaystyle x=\frac{2\pm \sqrt{188}}{2}

Since 188=4*47

\displaystyle x=\frac{2\pm \sqrt{4*47}}{2}

Take the square root of 4:

\displaystyle x=\frac{2\pm 2\sqrt{47}}{2}

Divide by 2:

\displaystyle x=1\pm \sqrt{47}

First option: Incorrect. The answer does not match

Second option: Incorrect. The answer does not match

Third option: Incorrect. The answer does not match

Fourth option: Correct. The answer matches exactly this option

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2 years ago
A little girl kicks a soccer ball. It goes 10 feet and comes back to her. How is this possible?
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The little girl kicked the call in the air and it came back down
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3 years ago
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Which equation is represented by Ms. Wilson’s model
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<span>                         D                     Q</span>

TC<span> =  D x P <span>+  ___   x  Cp +  ____  x Cs</span></span>

                         <span>Q                      2</span>

TC: Total Cost

P: Price per unit

Q: Quantity

Cp: Cost of issuance of a purchase order

<span>Cs: storage cost per unit</span>

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