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3 years ago

ALGEBRA 2 need work to be shown solve the following equation x^2 + 27=-9

Mathematics

2 answers:

Vaselesa [24]3 years ago

5 0

Answer:

x = ± 6i

Step-by-step explanation:

Given

x² + 27 = - 9 ( subtract 27 from both sides )

x² = - 36 ( negative value indicates the solutions are complex )

Take the square root of both sides

x = ± $\sqrt{-36}$ = ± 6i

drek231 [11]3 years ago

4 0

Step-by-step explanation:

x²=-9-27

x²=-36

there's no x

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Use the rules for multiplication by powers of 10 to calculate 20 × 100.

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3 years ago

Read 2 more answers

5 to the 3rd power times 5 to the negative 2 power

Lerok [7]

The equation is $5^{3}$ × $5^{-2}$

First, you need to solve the bases/exponents

$5^{3}$ is 5×5×5=125

Then you solve the second base/exponent but know that with negative exponents, you divide 1 by the number rather than multiplying

$5^{-2}$ = 1÷5÷5=.04

So now the equation is 125×.04=5

Answer: 5

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3 years ago

The length of a rectangle is 8 inches more than the width. the perimeter is 44 inches. find the length and width of the rectangl

vazorg [7]

Answer: Width is 7 inches, length is 15 inches.

Step-by-step explanation:

Let the width be w. Then, the length is w+8.

$2(w+w+8)=44\\\\w+w+8=22\\\\2w+8=22\\\\2w=14\\\\w=7\\\\\implies l=15$

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2 years ago

A small plane is flying a banner in the shape of a rectangle. The area of the banner is 144 square feet . The width of the banne

Margarita [4]

Answer:

The answer to your question is width = 6 ft; length = 24 ft

Step-by-step explanation:

Data

Area = 144 ft²

width = w

length = l

The width is 1/4 of the length

Formula

Area = width x length = w x l

Length = 4 width l = 4w

Process

1.- Substitute length in the first equation

Area = w(4w)

Simplify

Area = 4w²

2.- Solve for w

w = $\sqrt{\frac{Area}{4}}$

Substitution

w = $\sqrt{\frac{144}{4}}$

Simplification

w = $\sqrt{36}$

Result

w = 6 ft

3.- Find l

l = 4(6)

l = 24 ft

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3 years ago

What is the lcd for the fractions 5/12 and 7/18?

Yakvenalex [24]

Denoms are 12 and 18

12=2*2*3
18=2*3*3
lcd=2*2*3*3=36

lcd=36

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3 years ago

ALGEBRA 2 *need work to be shown * solve the following equation x^2 + 27=-9

ALGEBRA 2 need work to be shown solve the following equation x^2 + 27=-9