2.) Combine like terms and simplify the expression: 2x + 5y+ 7x Your answer

Mathematics

1 answer:

SashulF [63]3 years ago

5 0

Answer:

9x + 5y

Step-by-step explanation:

Here, in 2x + 5y+ 7x, the 'like terms' are 2x and 7x, and the sum of these terms is 9x. Thus, 2x + 5y+ 7x becomes 9x + 5y.

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Answer:

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3 years ago

10PTS<br> pls help me on this math problem and pls explain how you did it.

erastovalidia [21]

Answer:

y = 8

Step-by-step explanation:

Line1 with points (4, 1) and (0, 0):

slope = (y₂ - y₁) / (x₂ - x₁)

= (0 - 1) / (0 - 4)

= 1/4

Perpendicular line is opposite inverse so original slope 1/4 becomes -4/1 or simply -4.

Line2 with points (1, 0) and (-1, y):

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3 years ago

Read 2 more answers

What is the area of a parallelogram that has a base of 6 centimeters and a height of 4 millimeters? 24 cm2 2.4 cm2 240 cm2 20 cm

kotegsom [21]

2.4 cm2

First, convert the millimeters to centimeters
1mm = .1 cm

So, 4 mm=.4 cm

And since there in the same unit, you can now solve

Formula: b x h

6 cm (base) x .4 cm (height) = 2.4 cm

In cm, it is 2.4 cm

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4 years ago

Which equation shows a valid step in solving /2x-6+2x+6=0?

AfilCa [17]

An equation which shows a valid step that can be used to solve the given mathematical equation is $(\sqrt[3]{2x - 6})^3 = (-\sqrt[3]{2x + 6})^3$

<h3>What is an equation?</h3>

An equation simply refers to a mathematical expression that can be used to show the relationship existing between two (2) or more numerical quantities.

In this exercise, you're required to show a valid step which can be used to solve the given mathematical equation. Since both equations are having a cube root, the first step is to take the cube of both sides.

Take the cube of both sides, we have:

$\sqrt[3]{2x - 6} + \sqrt[3]{2x + 6} = 0\\\\(\sqrt[3]{2x - 6})^3 + (\sqrt[3]{2x + 6})^3 = 0^3\\\\(\sqrt[3]{2x - 6})^3 = (-\sqrt[3]{2x + 6})^3$