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stiv31 [10]
3 years ago
10

(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

81

Square root of 81=9

<u>-</u><u>1-9</u><u> </u> <u>-1+9</u>

4 4

<u>-</u><u>10</u><u> </u> <u>8</u>

4 4

Simplify

<u>-5</u> <u>2</u>

2 1

<u>-</u><u>5</u><u> </u> 2

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:

D

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
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