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Mrrafil [7]
3 years ago
11

PLEASE HELPPPPP PLEASEEEE

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
8 0
The answer to question 2 is d question 3 would beA
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The admission fee at an amusement park is $3.50 for children and $7.00 for adults. On a certain day, 331 people entered the park
andriy [413]

Let c be children and a adults.

3.5c + 7a = 1771 (the total revenue is equal to the amounts made off of people)

c + a = 331 (total number of people)

The second formula becomes a = 331 - c. This can be substituted into the first formula.

3.5c + 7(331 - c) = 1771 = 7*331 - 3.5c = 1771. 7*331 = 2317, so 3.5c = 2317 - 1771 = 546.

546/3.5 = 156 = c (number of children).

c + a = 156 + a = 331 => a = 331 - 156 = 175 (number of adults).

There are 156 children and 175 adults

6 0
3 years ago
Read 2 more answers
Been a while since I’ve needed to not use a calculator. Why is -2X10^-18 (3/16) = 4.09X10^-19?
Anestetic [448]

Answer:

see the explanation

Step-by-step explanation:

we have

2.18*10^{-18}(\frac{3}{16})

we have that

\frac{3}{16}=0.1875

Convert to scientific notation

0.1875=1.875*10^{-1}

substitute

2.18*10^{-18}(1.875*10^{-1}})

Remember that

To multiply two numbers in scientific notation, multiply their coefficients and add their exponents

2.18*10^{-18}1.875*10^{-1}}=(2.18*1.875)*10^{(-18-1)}=4.0875*10^{-19}

Round the number 4.0875 two decimal places

so

4.0875*10^{-19}=4.09*10^{-19}

8 0
3 years ago
PLEASE DO THIS I NEED HELP
garri49 [273]

Answer:

the one gonna truend into two

at th down the two truend into one y is the meaning that connot has issue with fractions

4 0
2 years ago
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What should be done to solve the following equation? (7.5)x = 45
Tema [17]
Divide each side by 7.5
4 0
3 years ago
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Annie walks 15 feet away from her house and places a mirror on the ground. She backs 4 feet away from the mirror so that she can
balandron [24]
9 is the answer to your Q
5 0
3 years ago
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