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stiv31 [10]
3 years ago
6

Solve each equation. check your solution. -1/2x-7=-11

Mathematics
2 answers:
boyakko [2]3 years ago
6 0
- \frac{1}{2} x-7=-11\

- \frac{1}{2} x=-11+7          |adding 7 on both sides

- \frac{1}{2} x*2=-4*2         |multiplying by -2 on both sides

-x = -8                                |dividing by -1 on both sides

x = 8

So, the solution is x =8
cupoosta [38]3 years ago
4 0
I'll offer you a deal in return for your 5 points:  I'll solve it . . . . You check it.

<u>-1/2x - 7  = -11</u>

Add  7  to each side:            -1/2 x  =  -4

Multiply each side by  2 :      - x  =  -8

Multiply each side by  -1 :     <em> x  =  8</em>

Take it Allalala !

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Juana baked 150 cookies for the bake sale and ate 10% of them. How many cookies did<br> Juana eat?
Sophie [7]

Answer:

15

Step-by-step explanation:

\frac{150x10}{100}=\frac{1500}{100}=15

5 0
3 years ago
Help PLEASE LIKE ACC STEP BY STEP FIND X PLZ
nikklg [1K]

Answer:

33

Step-by-step explanation:

The sum of interior angles in a rectangle is 360°

98 + 98 + 98 + 2x = 360

294 + 2x = 360

2x = 66°

x = 33

8 0
3 years ago
Randi shovels and salts her neighbors' driveways and walkways to earn money during the winter months in her town near the Pocono
grin007 [14]

Answer:

25t = 65

Step-by-step explanation:

Given that :

Profit earned = $60

Charge per hour = $25

Randy's cost or expenses = $(2 + 3) = $5 per job

Profit = (charge per hour * t) - cost

Where t = time

$60 = ($25 * t) - $5

$60 = $25t - $5

$25t = $65

7 0
3 years ago
Casey buys a bracelet. She pays for the bracelet and pays \$0.72$0.72dollar sign, 0, point, 72 in sales tax. The sales tax rate
denis23 [38]

Answer:

12dollars

Step-by-step explanation:

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5 0
4 years ago
The perimeter of the triangle is 41 inches. The perimeter of the rectangle is 66 inches.
Korolek [52]

Answer:

Part A)  The system of equations is equal to

41=4x+7y

33=(3x+7y)

Part B)

The length is 24\ in

The width is 9\ in

Step-by-step explanation:

Part A)

we know that

The perimeter of the triangle is equal to the sum of the length of its three sides

In this problem

41=x+3x+7y

41=4x+7y -----> equation A

The perimeter of rectangle is equal to

P=2(L+W)

In this problem

66=2(3x+7y)

33=(3x+7y) ------> equation B

Part B)

Using a graphing tool

Solve the system of equations

We know that

The intersection point both graphs is the solution of the system of equations

41=4x+7y

33=(3x+7y)

The intersection point is (8,9/7)

see the attached figure

x=8\ in

y=(9/7)\ in

step 3

Find the length and width of the rectangle

The length is 3x

3*8=24\ in

The width is 7y

7*(9/7)=9\ in

7 0
3 years ago
Read 2 more answers
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