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Zinaida [17]
2 years ago
10

The mean of Alice's last 5 math test scores is 88. The first 4 of these 5 math test scores were 87, 75, 93, and 85. What score d

id Alice earn on her fifth math test?
Mathematics
1 answer:
stiks02 [169]2 years ago
6 0

Answer:

Step-by-step explanation:

x is the score she got on the fifth test.

Since her average score is 88, the sum of all five tests is 5×88.

x + 87 + 75 + 93 + 85 = 5×88 = 440

x = 440 -  87 - 75 - 93 - 85

x = 100

She got a 100 on her fifth test.

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Anika [276]

Answer: What is the question

Step-by-step explanation:

3 0
3 years ago
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use the substitution method to solve the system of equations . choose the correct ordered pairs x+y=5 y=7 A.(12,7) B.(-12,7) C.
Alex

Answer:

<em>C. (-2, 7)</em>

Step-by-step explanation:

Put y = 7 to the equation x + y = 5:

x + 7 = 5          <em>subtract 7 from both sides</em>

x = -2


4 0
3 years ago
-3(x-5)=45<br> Please answer asap!
MrRa [10]

-3(x-5)=45

distribute

-3x+15 = 45

subtract 15 from each side

-3x = 30

divide by -3

x = -10

4 0
3 years ago
A store owner puts in an order for product x and product y for a total of 4,000 units. it costs $0.10 per item to ship of produc
galben [10]

The system of equations can be used to determine how much of product x and product y the store owner bought is x + y = 4,000

0.10x + 0.04y = 352

<h3>Simultaneous equation</h3>

  • product x
  • Product y
  • Total units of x and y = 4,000 units
  • Cost of shipping each product x = $0.10
  • Cost of shipping each product y = $0.04
  • Total cost of shipping = $352

The equation:

x + y = 4,000

0.10x + 0.04y = 352

Therefore, the system of equations can be used to determine how much of product x and product y the store owner bought is x + y = 4,000

0.10x + 0.04y = 352

Learn more about simultaneous equation:

brainly.com/question/16863577

#SPJ4

6 0
2 years ago
The weekly salary of a store manager includes a $30 bonus plus the number of hours the manager works multiplied by the managers
just olya [345]

Answer:

Yes this is a linear function f(x) = ex+30

e = hourly rate

x=hours

f(x) = total earnings

6 0
3 years ago
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