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3 years ago

The sum of 4 times a number and 15 is 47. Find the number.

Mathematics

2 answers:

Bezzdna [24]3 years ago

7 0

Answer:

The number is 8.

Step-by-step explanation:

Write an equation then solve by isolating the variable.

let x be the number

4x + 15 = 47 Subtract 15 from both sides

4x = 47 - 15

4x = 32 Divide both sides by 4

x = 32/4

x = 8

Therefore the number is 8.

kipiarov [429]3 years ago

6 0

Answer:

Step-by-step explanation:

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Anestetic [448]

Answer:

4n - 4

Step-by-step explanation:

3n-4 = the amount of tickets Evie has

n = the amount of tickets Mark has

3n - 4 + n = 4n - 4

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3 years ago

Consider the rational expression (IMAGE ATTACHED)

Keith_Richards [23]

Answer:

3x² is a term in the numerator
x + 1 is a common factor
The denominator has 3 terms

Step-by-step explanation:

You can identify terms and count them before you start factoring. Doing so will identify 3x² as a term in the numerator, and will show you there are 3 terms in the denominator.

When you factor the expression, you get ...

$\dfrac{3x^2-3}{3x^2+2x-1}=\dfrac{3(x^2-1)}{(3x-1)(x+1)}=\dfrac{3(x-1)(x+1)}{(3x-1)(x+1)}$

This reveals a common factor of x+1.

So, the above three observations are true of this rational expression.

3 0

4 years ago

Which expression is equivalent to one over 3p + 15?

Dafna1 [17]

<span>3p + 15 = 3(p + 5) (distributive property)

answer
</span><span>3(p + 5)</span>

6 0

3 years ago

Read 2 more answers

1 Point

Anastasy [175]

Answer:

61%

Step-by-step explanation:

it's really simple just take the percentage of both numbers, 42% and 19% and add them together and whatever the sum is, is gonna be your answer!

5 0

3 years ago

A recent study sought to determine if exercising after studying for an exam may help retain information. The 150 student volunte

Shtirlitz [24]

Answer:

The correct answer is (A).

Step-by-step explanation:

Because the data came from 3 groups in a randomized experiment, the appropriate test is a chi-square test for homogeneity.

8 0

3 years ago