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DiKsa [7]
3 years ago
7

Find x x+11+4x-22+10x-4=180

Mathematics
1 answer:
Alborosie3 years ago
6 0

Answer:

x=13

Step-by-step explanation:

x+11+4x-22+10x-4=180

Combine like terms

x+4x+10x +11-22-4 = 180

15x -15 = 180

Add 15 to each side

15x-15+15 = 180+15

15x = 195

Divide each side by 15

15x/15 =195/15

x =13

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A gymnast trains for 4 months for her competition how many weeks did she train.
BaLLatris [955]

Answer:

16 weeks

Step-by-step explanation:

Assuming that each month is around 4 weeks, multiply that number by 4 months and you will get 16 weeks in total.

5 0
2 years ago
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How much interest would Mia pay if the simple interest rate were 5%
balu736 [363]

Answer:

Mia would have a 55$ interest  :)

Step-by-step explanation:

7 0
2 years ago
The city wants to build a football field. Each wheelbarrow full of dirt covers an area of. Determine how many wheelbarrows full
lesya692 [45]

Answer: 5x^{2}+45x


Step-by-step explanation:

1. First, you must calculate the area of the football field. It is a rectangle, therefore, multiply the lenght by the width to calculate the area:

Area=lenght*width\\Area=(10x^{2}+90x)5x^{2}\\Area=50x^{4}+450x^{3}

2. Then, divide this area by the area covered by a wheelbarrow full of dirt.

x: number of wheelbarrows full of dirt needed for the field.

x=\frac{50x^{4}+450x^{3}}{10x^{2}}=5x^{2}+45x


6 0
3 years ago
A diver jumps off a 20 foot high diving board with an initial upward velocity of 4 feet per second. Use the vertical motion mode
Pachacha [2.7K]

The height is represented by h = -16t² + 4t + 20 and There is only one solution, because the solutions indicate time and time cannot be negative.

<h3>How to solve vertical motion models?</h3>

We are given the vertical model of the diver's jump as;

h = -16t² + vt + s

where;

h is height

t is time

v is velocity

s is distance

A) We are given;

Distance; s = 20 ft

velocity; v = 4 ft/s

Thus;

h = -16t² + 4t + 20

B) The solution of the model is gotten from;

-16t² + 4t + 20 = 0

Solving this quadratic equation gives;

t = 1.25 seconds or -1 second

C) B. There is only one solution, because the solutions indicate time and time cannot be negative.

Read more about Vertical Motion Models at; brainly.com/question/27526920

#SPJ1

7 0
2 years ago
Please answer each part of the question in full detail. I will give 29 points and brainliest!!
mamaluj [8]

Answer:

Step-by-step explanation:

a) Price of 4 bowls of soup + 6 hamburgers = $30

4s + 6h = 30 ---------------------(I)

Price of 1 bowl of soup + 3 hamburgers = $ 12.75

s + 3h = 12.75 -------------------(II)

b) s = 12.75 - 3h

Substitute the value of s = 12.75 - 3h in equation (I)

4*(12.75 - 3h) + 6h = 30

4*12.75 - 4 *3h  + 6h = 30

51.00 - 12h + 6h = 30

51 - 6h = 30   {Now subtract 51 from both sides}

51 - 6h - 51 = 30 - 51

-6h = -21    {Now, divide both sides by (-6)}

-6h/-6 = -21/-6

h = 3.50

Price of one hamburger = $3.50

Substitute the value of h in equation (II)

s + 3 *3.50 = 12.75

s + 10.50 = 12.75   {Subtract 10.50 from both sides}

s + 10.50 - 10.50 = 12.75 - 10.50

s = 2.25

Price of one soup = $ 2.25

c) Price of 1 soup and 1 hamburger = 2.25 + 3.50

 Price of 1 soup and 1 hamburger = $ 5.75

7 0
3 years ago
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