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torisob [31]
3 years ago
11

Solve. 3x = 15 A) x = 4 B) x = 5 C) x = 6 D) x = 12

Mathematics
2 answers:
Harrizon [31]3 years ago
8 0

Answer:

B

Step-by-step explanation:

3x=15

Divide both sides by 3 to isolate the x variable.

x=15/3=5

Neko [114]3 years ago
3 0

Answer:

5

Step-by-step explanation:

Given 3x = 15, solve for x.

To do this, divide both sides of the equation by 3, returning

x = 5.

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What is the product of 2x - 5 and 3x2 + 5x - 7? Write your answer in standard form.
Orlov [11]

Answer:

(2x - 5 ) (3x^2 + 5x - 7) = 6x^3 - 5x^2 - 39x - 35

The product of 2x – 5 and 3x2 + 5x - 7equal to the product of 5x - 2 and 3x2 + 5x - 7 are not equal.

Step-by-step explanation:

Product means multiplication

Product of 2x - 5 and 3x^2 + 5x - 7

(2x - 5 ) (3x^2 + 5x - 7)

= 6x^3 + 10x^2 - 14x - 15x^2 - 25x - 35

Collect like terms

= 6x^3 + 10x^2 - 15x^2 - 14x - 25x - 35

= 6x^3 - 5x^2 - 39x - 35

Product of 5x - 2 and 3x^2 + 5x - 7

(5x - 2) (3x^2 + 5x - 7)

= 15x^3 + 25x^2 - 35x - 6x^2 - 10x + 14

Collect like terms

= 15x^3 + 25x^2 - 6x^2 - 35x - 10x + 14

= 15x^3 + 19x^2 - 45x + 14

The product of 2x – 5 and 3x^2 + 5x - 7equal to the product of 5x - 2 and 3x^2 + 5x - 7 are not equal.

They both consist of different variables in their multiplier

8 0
3 years ago
Factor 4x 2 + 12x + 5 . (2x + 5)(2x + 1)
swat32
4x^2 + 12x + 5=4x^2+2x+10x+5 \\  \\ =2x(2x+1)+5(2x+1)=(2x+5)(2x+1) \\  \\ \therefore4x^2+12x+5=(2x+5)(2x+1)
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3 years ago
Science 8th grade 10 pts
Firdavs [7]

Answer:

Photosynthesis depends on the carbon dioxide released during cellular respiration.

Step-by-step explanation:

6 0
3 years ago
The area of the right triangle shown is 24 square feet. Which equations can be used to find the lengths of the legs of the trian
Yuri [45]
Not sure, but the areas of a triangle is BH/2 so the dimensions should be 8 and 6 then 10.
8 x 6 = 48
48/2 = 24
Maybe that can help with the equation
4 0
4 years ago
Read 2 more answers
2. (02.01 LC)<br> 2x - 20<br> Solve:<br> 2x = 20<br> = 2x
Lubov Fominskaja [6]
The answer is x = 10
6 0
3 years ago
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