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3 years ago

Simplify (4x2 + 9x + 2) + (-2x2 + 2x - 3).

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

7 0

Answer:

6x^2 + 11x -1

Step-by-step explanation:

4x^2 + 9x + 2 + 2x^2 + 2x -3

Add the like terms to get the answer

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Choose the correct slope of the line that passes through the points (1, −3) and (3, −5). I NEED HELP ASAP

Degger [83]

The slope would be:
-5--3/3-1
-2/2
-1

Slope = -1

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3 years ago

What is the volume of a sphere with a radius of 4

Ede4ka [16]

Step-by-step explanation: To find the volume of a sphere, start with the formula for the volume of a sphere which is shown below.

$V = \frac{4}{3}\pi r^{3}$

Here, we are given that our sphere has a radius of 4 units.

So plugging into the formula, we have $(\frac{4}{3})(\pi)(4 units)^{3}$ .

Start by simplifying the exponent.

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So we have $(\frac{4}{3})(\pi)(64 units^3})$ .

Next, we multiply (4/3)(64) which can

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So multiplying across the numerators and across the denominators,

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3 years ago

45 degreese is used in a pie chart to reperesent 6 people. How many people were there altogehter?

KatRina [158]

We can solve this problem by the rule of three.
A complete pie chart has 360º.

45º----------------------6 people
360º-------------------- x

x=(360º*6 people) / 45º=48 people.

Answer; 48 people.

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4 years ago

kvv77 [185]

Answer:

Girls in Mr. Chang's class: 28 - 21 ; # girl students = # total students - # boy students ; 7 girl students.

Boys in Mr. Chang's class: 28 - 7 ; # boy students = # total students - girl students ; 21 boy students.

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3 years ago

If Alex spends more than $150 today, he will overdraw his bank

sammy [17]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers