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4 years ago

Evaluate f(x) = 2x - 7 when x = 4.

Mathematics

1 answer:

gavmur [86]4 years ago

7 0

Answer:

$x = \frac{11}{2} \\$

Step-by-step explanation:

f(x) = 2x - 7

when x = 4

It means that equate f(x) to the value of x that's 4 and solve for x

That's

f(x) = 4

We have

$2x - 7 = 4$

Add 7 to both sides of the equation

$2x + 7 - 7 = 4 + 7 \\ 2x = 11$

Divide both sides by 2

$\frac{2x}{2} = \frac{11}{2} \\$

We have the final answer as

$x = \frac{11}{2} \\$

Hope this helps you

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Last week 14 students were given Cardinal Credits for good behavior. This week 22 students were given Cardinal Credits. What was

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Answer:

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Step-by-step explanation:

Given: Number of students who were given Cardinal Credits last week for good behavior = 14

Number of students who were given Cardinal Credits this week for good behavior = 22

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Solution:

Increase in number of students = 22 - 14 = 8

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3 years ago

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Answer:

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3 years ago

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3 years ago

Megan has a piece of fabric which is a right triangular shape. The length of leg 1 is 4 m. The length of the other leg is twice

Bess [88]

Answer:

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Step-by-step explanation:

Use the Pythagorean Theorum - $a^2 + b^2 = c^2$ . Use leg 1 as a, leg 2 as b, and the third side as c.

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Now, we use the Order of Operations to find $c^2$ ...

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3 years ago

PLZ HURRY IT'S URGENT!!!!!!!!!!

ICE Princess25 [194]

$\: \: \: \frac{9}{12} \\ = \frac{3 \times 3}{3 \times 4} \\ = \frac{3}{4} \\ = \frac{3}{4} \times 1 \\ = \frac{3}{4} \times \frac{2}{2} \\ = \frac{6}{8} = \frac{3}{4}.$

So, Option C is the correct answer.

Hope this will help you.

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3 years ago

Read 2 more answers