4 years ago

Solve 2x2 + 5x = 12

Mathematics

1 answer:

aliya0001 [1]4 years ago

4 0

2x2+5x=12, 2x+5x=7x, 12+2=14, 7x/7=14/7, x=2

You might be interested in

Which expressions are equivalent to Negative 9 (two-thirds x + 1)? Check all that apply.

Sav [38]

Answer:

$-9(\frac{2}{3}x) + 9(1)\\ \\-6x + 9$

Explanation:

Before we begin, remember the following rules:

1- Distribution property:

$a(b+c) = ab+ac$

2- Simplification of fractions:

$\frac{xy}{yz}=\frac{x}{z}$

3- Signs in multiplication:

+ve * +ve = +ve

-ve * -ve = +ve

+ve * -ve = -ve

Now, for the given problem, we have:

$9 (\frac{2}{3}x + 1)$

Starting with the distributive property:

$-9 (\frac{2}{3}x +1) = -9(\frac{2}{3}x) - (-9)(1) = -9(\frac{2}{3}x) + 9(1)$

..................>This corresponds to option 1

Now, we simplify the output from the above step:

$-9(\frac{2}{3}x) + 9 = \frac{-9*2}{3}x + 9 = -6x+9$

................> This corresponds to option 5

Hope this helps :)

4 0

4 years ago

Read 2 more answers

For every 13 birds born at the zoo there are two animals born. There were 44 if you were animals born last month then birds so h

Daniel [21]

The ratio birds : animals = 13 : 2
so for every 1 animal, 6.5 birds were born

last month: animals = birds - 44
birds - animals = 44
use trial and improvement to find:
if there were 52 birds, there must be 8 animals
CHECK: 52 - 8 = 44

4 0

3 years ago

Can A triangle can be formed with side links 4 inches 5 inches in 8 inches

oksian1 [2.3K]

No it can not.............

5 0

3 years ago

The product of (-3xy?)(5x²y3) is

egoroff_w [7]

Answer:

-3xy

Step-by-step explanation:

7 0

3 years ago

PLEASE HELP. 15 POINTS.

Vilka [71]

Answer:

The simplest EXACT answer is $\sqrt{\frac{244}{9}$ .

A decimal form of this is approximately 5.207.

Step-by-step explanation:

Use the distance formula.

5 0

3 years ago

Read 2 more answers