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FromTheMoon [43]
2 years ago
9

Help me solve this please i will give someone who responds a crown

Mathematics
2 answers:
VARVARA [1.3K]2 years ago
8 0

Answer:

\boxed{x = -4}

Step-by-step explanation:

This drawing illustrates the

equation: -3x – 7 = 5.

Since:

(-x + -x + -x) + (-1 + -1 + -1 + -1 + -1 + -1 + -1) =

(1 + 1 + 1 + 1 + 1) → (-3x) + (-7) = (5) →

-3x – 7 = 5.

To reduce the equation and find x:

[add 7 to both sides to isolate the constant term on the right side]

-3x – 7 + 7 = 5 + 7 →

-3x = 12 →

[divide both sides by -3 to cancel out the coefficient of -3 in -3x to get x]

-3x / -3 = 12 / -3 →

x = -4

Dmitrij [34]2 years ago
6 0

Answer:

4.

Step-by-step explanation:

You are so smart. 5 - (-7) = 5+7 which = 12. 12/3 is 4.

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2 years ago
Solve the linear equation. 8x+32=1/5(25x−15)−4x
Kipish [7]

Answer: x= 5

Step-by-step explanation:

8x+32=1/5(25x−15)−4x

8x + 32 = <u>25x -15</u> - 4x   <u><em>- 25x -15/  5</em></u>

                    5

8x + 32 = 5x -3 - 4x

8x + 4x - 5x = -32 - 3

7x =-35

x = 35/7

x= 5

5 0
3 years ago
Hello please help! Solve for X.
scoray [572]

Answer:

-6

Step-by-step explanation:

Add 2x-15 to both sides to get 2x=-12 or x = -6.

4 0
2 years ago
Read 2 more answers
If Fun Reads Bookstore has a ready club with a $40 fee and charges $5 per book and Cool Covers Bookstores club charges $100 fee
choli [55]

Answer:

You have to buy more than 20 books to make Cool Cover Bookstore club a better deal.

Step-by-step explanation:

Given that:

Fee charged by Fun Reads Bookstore = $40

Charges per book = $5

Let x be the number of books.

A(x) = 5x+40

Fee charged by Cool Covers Bookstore = $100

Charges per book = $2

B(x) = 2x+100

For making Cool Cover Bookstores club a better deal,

B(x) > A(x)

2x+100 > 5x+40

2x-5x > 40-100

-3x > -60

Dividing both sides by -3

\frac{-3x}{-3}>\frac{-60}{-3}\\x>20

Hence,

You have to buy more than 20 books to make Cool Cover Bookstore club a better deal.

8 0
3 years ago
A container manufacturer plans to make rectangular boxes whose bottom and top measure 4x by 3x. The container must contain 48in.
alex41 [277]

The height of the container that will be able to minimize the cost will be 3.08cm.

<h3>How to calculate the height?</h3>

The volume of the box will be:

= (3x)(4x)h

= 12x²h

From the information given, we are told that the container must contain 48in³. Therefore,

48 = 12x²h

h = 4/x²

The function cost will be:

= 3.50(2)(12x²) + 4.40(14x)h

= 84x² + 61.6x(4/x²)

= 84x² + 246.4/x

We'll use the first derivative. This will be:

dC/dx = 168x - 246.4/x²

x = 1.14.

Therefore, the height will be:

h = 4/x² = 4/1.14² = 3.08cm

In conclusion, the height is 3.08cm.

Learn more about height on:

brainly.com/question/1557718

4 0
2 years ago
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