3 years ago

Simplify the expression. (5x2 - x - 7) + (2x2 + 3x + 4)

Mathematics

1 answer:

kifflom [539]3 years ago

5 0

Answer:

$7x^2-2x-3$

Step-by-step explanation:

First get rid of the parenthesis

$5x^2-x-7+2x^2+3x+4$

Next simplify the variables

$7x^2-x-7+3x+4$

$7x^2-2x-7+4$

$7x^2-2x-3$

You might be interested in

Five added to a number gives the sum of 39. what is the unknown number?

gregori [183]

Answer:

The unknown number is 34.

Step-by-step explanation:

x+5=39

x=39-5

x=34

6 0

3 years ago

Determine the slope of a line that contains the points P(-5,-7) and Q(5,-5)

PilotLPTM [1.2K]

Answer:

1/5

Step-by-step explanation:

-5 - (-7) = 2

5 - (-5) = 10

2/10 ÷2

slope = 1/5

7 0

3 years ago

PLZ HELP !

max2010maxim [7]

Answer:

13 cm

Step-by-step explanation:

The diagonal of a rectangle forms a right triangle; where the diagonal is a hypotenuse, and two sides of the rectangle are legs.

Using pythagorean's theorem ( $a^2 + b^2 = c^2$ ), we can say:

$5^2 + 12^2 = c^2\\25 + 144 = c^2\\169 = c^2\\13 = c$

The hypotenuse is equal to 13cm.

3 0

3 years ago

An invitation is a kind of business letter

bezimeni [28]

No its not am sure its not

4 0

3 years ago

Read 2 more answers

Sometime outiers can have a significant effect on statistics and sometime they don't . Use the following distribution to determi

IrinaVladis [17]

What is the test name?

8 0

3 years ago