Ask question

Ask question

All categories

4 years ago

14

Please solve by factoring 5x^2+7x-66=0...use a comma to seperate answers.

1 answer:

never [62]4 years ago

7 0

$5x^2+7x-66=0 \\ \\5x^2+7x -22x+ 22x-66=0 \\ \\ 5x^2-15x+ 22x-66=0 \\ \\5x(x-3)+22(x-3)=0 \\ \\ (x-3)(5x+22)=0\\ \\x-3 = 0 \ \ or \ \ 5x+22 =0 \\ \\ x=3 \ \ or \ \ 5x=-22 \ \ /:5 \\ \\x=3 \ \ or \ \ x=-\frac{22}{5} \\ \\x=3 \ \ or \ \ x=-4\frac{2}{5}$

You might be interested in

If AD⎯⎯⎯⎯⎯⎯⎯⎯

kondor19780726 [428]

Answer:

I don't really understand the question

Step-by-step explanation:

AD

5 0

3 years ago

¿Cuál es el máximo común divisor de 160 y 96?

agasfer [191]

Answer:

32

Step-by-step explanation:

The factors of 96 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96

The factors of 160 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160

Then the greatest common factor is 32.

Hope this helps!

7 0

3 years ago

monitta

It is divided by 2 each time, and so your next number will be 4, since 8/2 = 4

C) 4

hope this helps :D

7 0

4 years ago

What is the answer please help don’t send a link I will report

zysi [14]

Answer:

c or 2/5

Step-by-step explanation:

4 0

3 years ago

Denise mixed 1 4/5 ounces of blue paint with 2 1/10 ounces of yellow paint. How many ounces of paint did Denise mix?

fenix001 [56]

Answer:

Hence total 3.9 ounces of paint was used to make the mixture.

Step-by-step explanation:

Denise mixed $1\frac{4}{5}$ ounces of blue paint with $2\frac{1}{10}$ ounces of yellow paint.

Now we are asked to find how many ounces of paint did Denise mix.

i.e. we are asked to find the total number of paint used to form the mixture.

We know that:

$1\frac{4}{5}=\dfrac{9}{5}$ and $2\frac{1}{10}=\dfrac{21}{10}$

Hence total paint used= $\dfrac{9}{5}+\dfrac{21}{10}$

= $\dfrac{39}{10}=3.9$

Hence total 3.9 ounces of paint was used to make the mixture.

3 0

4 years ago

Read 2 more answers