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nignag [31]
3 years ago
8

You earned an 82% on a math test. You answered 18 questions correctly.How many questions were on the test

Mathematics
1 answer:
Nadya [2.5K]3 years ago
4 0

Answer:

22

Step-by-step explanation:

The easiest way to do this is to multiply the number you got right by 1+ the percent you got wrong. In this case it would be 1+.18. If you multiply 18 by 1.18 you get 21.24. Because you cant have part of a question you need to round up. To check you can divide 18 by 22 and you get 81.81. I hope this helps!

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5 / 4 x + 3 = x - 1 / 4
tiny-mole [99]
5/4x+3 = x-1/4
5/4x-x = -1/4-3
1/4x = -13/4
x = -13/4.4
x = - 13
6 0
3 years ago
When we solve the inequality, will we keep or switch the inequality sign?
quester [9]

Answer:

switch I think cuz there is a negative

Step-by-step explanation:

Hope u have a nice day

8 0
3 years ago
Read 2 more answers
Maria, Bill, and Eric have a total of $95 in their wallets. Maria has 10 less than Bill. Eric has 3 times what Bill has. How muc
BaLLatris [955]

Answer:

\boxed{Maria \: got \:  \$11} \\  \boxed{Bill \: has \:  \$21}  \\ \boxed{ Eric  \: has \: \$63}

Step-by-step explanation:

let \: maria \: be \to \: m \\ let \: eric \: be \to \: e  \\let \: bill \: be \to \: b  \\then : m =b - 10 \: and \: e =  3b \\ but : m + b + e = 95 \\ hence \to \: (b - 10) + b + (3b) = 95 \\ 2b - 10 + 3b = 95 \\ 5b = 95 + 10 \\ 5b = 105 \\  \boxed{b = 21} \\ m = b - 10 = 21 - 10 \\ \boxed{ m = 11} \\ e = 3b = 3(21)  \\  \boxed{e= 63}

♨Rage♨

5 0
3 years ago
What is the greatest of 10 and 15
Anastasy [175]

Answer:

15 is greater than 10

Step-by-step explanation:

Good luck with Maths and other subjects!

Please mark Brainliest..:-)

The greatest common factor of 15 and 10 is 5

6 0
3 years ago
Part A
Jlenok [28]

The linear function that describes the total cost of a tiny house, based on the number of square feet A is given by:

C = 175A + 1000.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem:

  • The house has a fixed cost of $1,000 for the factory equipment, hence the y-intercept is of b = 1000.
  • The variable cost is of $175 per square foot, hence the slope is of a = 175.

Then, the equation is given as follows:

C = 175A + 1000.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

3 0
2 years ago
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