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3 years ago

(2x - 5)^ + (2x – 5)^

Mathematics

1 answer:

uranmaximum [27]3 years ago

6 0

Answer:

4x-10

Step-by-step explanation:

Combine like terms :)

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Please help? Will mark brainliest

wlad13 [49]

Answer:

The answer is C

Step-by-step explanation:

Move the nine to the other side of the equal sign

Use the quadratic formula

Find a, b, and c

A=2, B=1, C=-10

Plug them in

1 squared minus 4(2)(-10)

1+80

Square root of 81=9

-1-9 -1+9

4 4

-10 8

4 4

Simplify

-5 2

2 1

-5 2

7 0

4 years ago

The leg of a right triangle is 3 units and the hypotenuse is 11 units. What is the length, in units, of the other leg of the tri

son4ous [18]

Answer:

Step-by-step explanation:

8 0

3 years ago

The area of an equilateral triangle is given by A =3^1/2/4s^2. Find the length of the side s of an equilateral triangle with an

yan [13]

Answer:

The length of the side of an equilateral traingle $s=2\sqrt{2}$ inches

Step-by-step explanation:

Given that the area of an equilateral triangle is given by

$A=3^\frac{1}{2}s^2$

It can be written as

$a=\frac{\sqrt{3}}{4} s^2$ Square inches (1)

To find the length of the side s os an equilateral triangle

Given that area of an equilateral triangle is $12^\frac{1}{2}$ square inches

It can be written as

$A=12^\frac{1}{2}$

$A=\sqrt{12}$ square inches

It can be written as

$A=12^\frac{1}{2}$

$A=\sqrt{12}$ square inches (2)

Now comparing equations (1) and (2) we get

$\frac{\sqrt{3}}{4}s^2=\sqrt{12}$

$\frac{\sqrt{3}}{4}s^2=\sqrt{4\times 3}$

Dividing by $\frac{\sqrt{3}}{4}$ on both sides we get

$\frac{\frac{\sqrt{3}}{4}s^2}{\frac{\sqrt{3}}{4}}=\frac{2\sqrt{3}}{\frac{\sqrt{3}}{4}}$

$\frac{\sqrt{3}}{4}s^2\times\frac{4}{\sqrt{3}}=2\sqrt{3}\times\frac{4}{\sqrt{3}}$

$s^2=8$

$s=\sqrt{8}$

Therefore $s=2\sqrt{2}$ inches

Therefore the length of the side of an equilateral traingle $s=2\sqrt{2}$ inches

3 0

3 years ago

62.4g of sugar is needed to make 8 cakes. How much sugar is needed for 9 cakes?

Andrews [41]

Answer:

7.8 for 1 cake so add that to your total

Step-by-step explanation:

4 0

3 years ago

How do you use the elimination method ?

lidiya [134]

To use the elimination method, you have to create variables that have the same coefficient, then you can eliminate them.

6 0

4 years ago