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3 years ago

2h+y/9h^2-y^2 - 4h^2/3h+y what is the least common denominator in this expression

Mathematics

1 answer:

Degger [83]3 years ago

4 0

Answer: It is 9

Step-by-step explanation:

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I need help simplifying 8^3

Dafna1 [17]

8^3 = 512
8^3 also eqauls 8 x 8 x 8.
I hope I helped!

6 0

3 years ago

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Find a number such that 7 times the number is 56 greater than the opposite of the number.

Elenna [48]

Answer:

hey your answer can be 10 because the oppisite of 56 is 65 and 7x 10 is 70

Step-by-step explanation:

6 0

4 years ago

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Calculate the side lengths a and b to two decimal places.

Zinaida [17]

Answer:

$a=10.92 units$

$b=14.51 units$

Step-by-step explanation:

We are given that c=6 units

$\angle A=43^{\circ}$

$\angle B=115^{\circ}$

We have to find the side length a and b.

We know that sum of angles of a triangle =180 degrees

$\angle A+\angle B+\angle C=180$

Substitute the values then we get

$43+115+\angle C=180$

$158+\angle C=180$

$\angle C=180-158=22^{\circ}$

sine law: $\frac{a}{sin A}=\frac{b}{sin B}=\frac{c}{sin C}$

$\frac{a}{sin 43^{\circ}}=\frac{6}{sin 22^{\circ}}$

$a=\frac{6}{sin 22^{\circ}}\times sin 43^{\circ}$

$a=10.92 units$

$\frac{b}{sin 115^{\circ}}=\frac{6}{sin 22^{\circ}}$

$b=\frac{6}{sin 22^{\circ}}\times sin 115^{\circ}=14.51$

$b=14.51 units$

6 0

3 years ago

Given the equation and solution , find the missing coefficient.

Serggg [28]

-6x + 7 = 8x + A

let x = -4
-6(-4) + 7 = 8(-4) + A
24 + 7      = -32 + A
31 + 32    = -32 + 32 + A
63            = 0 + A
A = 63

6 0

4 years ago

Please help I need an answer ASAP !

Mila [183]

Well, 4+1=5, so we need to first find:
$150 \div 5 = 30$
Ivan gets
$30 \times 4 = 120$
Tanya gets
$30 \times 1 = 30$
$120 - 30 = \boxed{90}$

6 0

3 years ago