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3 years ago

3x-4 when x = 7 how do I do this equation I’m confused

Mathematics

2 answers:

natka813 [3]3 years ago

6 0

Plug the 7 in where it says x.
3x-4
3(7)-4
21-4
17

Andreas93 [3]3 years ago

5 0

Answer:

17.

Step-by-step explanation:

1. Plug in 7 for x.

2. 3(7)-4

3. 3 times 7 is 21.

4. 21 minus 4 is 17.

5. The Answer is 17.

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2 years ago

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Alexxandr [17]

Answer:

17,18

Step-by-step explanation:

let the smaller integer be "a" and the larger be "b"

Then 2b = 3a -15 ........................equ 1

but they are consecutive integers, b= a+1 ; substitute b into equ 1,thus,

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2 years ago

Find the fraction of stundents enrolled in each language

blondinia [14]

Fraction of students enrolled in Chinese = $\frac{51}{126}$

Fraction of students enrolled in French = $\frac{33}{126}$

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Solution:

Total number of students = 51 + 33 + 42

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Number of students enrolled in Chinese = 51

Fraction of students enrolled in Chinese

$$=\frac{\text{Number of students enrolled in Chinese}}{\text{Total number of students}}$

$$=\frac{51}{126}$

Fraction of students enrolled in Chinese = $\frac{51}{126}$

Number of students enrolled in French = 33

Fraction of students enrolled in French

$$=\frac{\text{Number of students enrolled in French}}{\text{Total number of students}}$

$$=\frac{33}{126}$

Fraction of students enrolled in French = $\frac{33}{126}$

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Fraction of students enrolled in Spanish

$$=\frac{\text{Number of students enrolled in Spanish}}{\text{Total number of students}}$

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Answer:

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Step-by-step explanation:

the x value is slope and the y value is y intercept.

REMEMBER THIS!!! ITS SUPPPER IMPORTANT

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