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Drupady [299]
3 years ago
13

What is the value of the expression 8 − (7 − 4) + 12 x 2?

Mathematics
2 answers:
Kamila [148]3 years ago
7 0

Answer:

19

Step-by-step explanation:

im smart

Len [333]3 years ago
6 0

Answer:

29

Step-by-step explanation:

just do the math lol

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A high school has 1,500 students. In a random sample of 50 students, 32 own one or more pets. Predict the number of students at
zavuch27 [327]
Hello!

First you have to find the rate between the amount of students surveyed by the total amount

You do this by dividing the total amount of students by the amount of students surveyed

1500 / 50 = 30

We multiply the amount of students that have a pet by this number

32 * 30 = 960

The answer is B)960

Hope this helps!
7 0
3 years ago
Select all correct answers
Luden [163]
<h2>Answer = </h2><h2>=  \frac{1}{y {}^{5} x {}^{2} }</h2>

Step-by-step explanation:

Greetings !

simplify for variable y first

apply exponent rule

a {}^{b} .a {}^{c}  = a {}^{b +c \\   } \\  y {}^{ - 8}y {}^{5}  = y {}^{ - 8 + 3}

Add/subtract the numbers -8+3=5

= y {}^{5}

Apply exponent rule

a {}^{ - b}  =  \frac{1}{a {}^{b} }

Thus,

y {}^{ - 5}  =  \frac{1}{y {}^{5} }

secondly, simplify for the variable x

Apply exponent rule as we made on y

x {}^{ - 2}

x  {}^{ - 2}  =  \frac{1}{x {}^{2} }

multiply bot the values we get

Hope it helps!

5 0
1 year ago
during one semester, the time elaine spent doing homework or participating in extracurricular activities was 20 percent less tha
polet [3.4K]

Answer:

963 hours

Step-by-step explanation:

I subtracted 20 from the 981

7 0
2 years ago
The inside of tank is in the shape of a right rectangular prism. The base of the prism is 85 cm by 64 cm. What is the minimum he
Allisa [31]

Answer:

16.9 cm

Step-by-step explanation:

The volume of a prism = Area of base × height

For a rectangular prism, the base of the area = length × breadth

The volume of the liquid = 92 L

Since 1 L = 1000 cm³, 92 L = 92000 cm³

92000 = 85 × 64 × h

5440 h = 92000

h = 92000 ÷ 5440 = 16.9 cm

8 0
3 years ago
What is the answer to number 18?
dmitriy555 [2]

Answer: 3n ×9

Step-by-step explanation:

The product of 3 times a N number equals 3n or 3 ×N but you should write 3n then times it by 9

7 0
3 years ago
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