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3 years ago

Check all solutions to the equation. x² =-4

Mathematics

2 answers:

vovangra [49]3 years ago

4 0

Answer:

x=2i, -2i

Step-by-step explanation:

BARSIC [14]3 years ago

3 0

Answer:

2,-2 or maybe no real solutions but i went with 2,-2

Step-by-step explanation:

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What is the value of x?

Serggg [28]

Answer:

Step-by-step explanation:

the angles of a triangle add up to180.

70 plus 30 plus x = 180

100 plus x =180

x=80

8 0

3 years ago

Which of the following expressions has a value of 3? -6 divided -2, 4 -(-1),(-1)(-3), (-2) - 1, 15 divided by -5, 4 + 1

pav-90 [236]

Answer:

(-1)(-3)

Step-by-step explanation:

When two negatives are multiplied it always equals a positive making it the only one that equals positive 3.

4 0

3 years ago

name three different pairs of fractions that have the same product when multiplied .explain how you got your answer

Deffense [45]

$\frac{5}{10}*\frac{10}{40}=\frac{50}{400}$
$\frac{2}{8}*\frac{2}{4}=\frac{4}{32}$
$\frac{1}{4}*\frac{1}{2}=\frac{1}{8}$

$\frac{1}{8}$ is obtained by multiplying $\frac{1}{2}$ and <span> $\frac{1}{4}$
</span>You basically create equivelant fractions for both 1/2 and 1/4 and multiply by each other. This way you get the same result always.

8 0

3 years ago

Together, the areas of the rectangles sum to 30 square centimeters.

Juli2301 [7.4K]

Answer:

3x+2y

Step-by-step explanation:

Find the rectangles attached

Area of a rectangle = Length * Width

A = A1+A2

given

A = 30cm²

A1 = 3 * x

A1 = 3x

A2 = 2*y

A2 = 2y

Substitute

30 = 3x+2y

Hence the required equation is 3x+2y = 30

6 0

3 years ago

Mr.Webb wants to give each of his 7 dogs no more than 10 treats. how many treats does he need? (let t= the number of treats)

Lina20 [59]

Answer:

Step-by-step explanation:

7x10=70

5 0

3 years ago

Read 2 more answers