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Dmitrij [34]
3 years ago
13

Justin opened a savings account with $500. He plans to save $50 per week from his paycheck. Which equation would represent his t

otal balance, y, after x weeks of saving?
A . x = 50y + 500
B . y = x
C .y = 500x + 50
D. y = 50x + 500
Mathematics
1 answer:
svetlana [45]3 years ago
8 0
The answer will be D.
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Emily went to the movie theater for her birthday. A mix of adults and children attended, making a total of 22 people. Each adult
viktelen [127]

Answer:

13 children and 9 adults if the total cost is $152.5

Step-by-step explanation:

Let x children and y adults

x + y = 22 (1)

5.5x + 9y = 125.5 (2)

y = 22 - x

5.5x + 9(22 - x) = 125.5

5.5x + 198 - 9x = 125.5

-3.5x = 125.5 - 198

-3.5x = -72.5

x = 20.7

y = 22 - x = 1.3

Which is not possible

If the total cost is $152.5

x + y = 22 (1)

5.5x + 9y = 152.5 (2)

y = 22 - x

5.5x + 9(22 - x) = 152.5

5.5x + 198 - 9x = 152.5

-3.5x = 152.5 - 198

-3.5x = -45.5

x = 13

y = 22 - 13 = 9

3 0
3 years ago
Which two values of x satisfy the equation square root 3-2cos x = 2?
Andrei [34K]

Answer: x=2π/3 and x=4π/3

Step-by-step explanation:

The equation we have is \sqrt{3-2cosx} =2. All we have to do is get cosine alone to find the 2 values of x.

3-2cosx=4\\-2cosx=1\\cosx=-\frac{1}{2}

Now that we have our cosine left, we can use our unit circle to figure out when does cosx=-1/2. Cosine is the x value of the coordinate.

x=2π/3

x=4π/3

8 0
2 years ago
2/3 of a pizza has olives on it . If Vivian eats 1/2 of the olive pizza , what fraction of the whole pizza did she eat ? Comment
My name is Ann [436]

Answer:

33% of a whole pizza

Step-by-step explanation:

2/3 of 100% = 66%

so 66% of the pizza has olives

she eat the half of that and the half from 66% is 33%

8 0
3 years ago
every plz go report that page I keep seeing that same question every time I refresh what there posting is not funny they should
steposvetlana [31]

Answer:

what is it?

Step-by-step explanation:

8 0
2 years ago
Solve for x in simplest form (again) You don't need to write out the work for me, you can jus write down the answer you got.
FromTheMoon [43]

Answer:

x = 40/21

Step-by-step explanation:

This should be the right answer...

5 0
3 years ago
Read 2 more answers
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