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user100 [1]
3 years ago
8

What should be done first to evaluate the expression?

Mathematics
2 answers:
Leto [7]3 years ago
6 0

Answer:

remember pemdas?

Step-by-step explanation:

Parentheses

Equal sign

Multiplication

Division

Addition

Subtraction

So you would have to divide first.

julsineya [31]3 years ago
6 0

Answer:

You multiply 3 and 6 first

Step-by-step explanation:

PEMDAS

Parentheses

Expressions

Multiplication

Division

Addition

Subtraction

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15% of people on the beach do not wear sun screen. If 30 people don't wear sunscreen, what is the total number of people at the
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Answer: The information you are given shows that 15% = 30. Multiply 30 by 6 and 2/3 (The number of times 15 goes into 100) and you have your answer. There are 200 people on the beach.

6 0
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Please answer i will mark as brainliest
devlian [24]
Use Photomath it would tell you the answer if you take a pic of your question
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Researchers have found that after 25 years of age the average size of the pupil in a
laila [671]

Answer:

At 25 = 6.8612mm

At 50 years = 5.422mm

Step-by-step explanation:

Equation,

d = 2.115Logₑa + 13.669

d = diameter of the pupil

a = number of years

Note : Logₑa = In a (check logarithmic rule)

d = 2.115Ina + 13.669

1. At 25 years,

d = -2.115In25 + 13.669

d = -2.115 × 3.2188 + 13.669

d = -6.807762 + 13.669

d = 6.8612mm

At 25 years, the pupil shrinks by 6.86mm

2. At 50 years,

d = -2.1158In50 + 13.669

d = -2.1158 * 3.912 + 13.669

d = -8.2770 + 13.699

d = 5.422mm

At 50 years, the pupil shirks by 5.422mm

To save this question, I had to plug in the values into the equation.

Solving for Logₑa might be difficult, so instead I used Inx which is the same thing. Afterwards, i substituted in the values and solve the equation for each years.

8 0
3 years ago
Each day, a young person should sleep 9 hours plus 1 4 hour for each year that the person is under 18 years of age. Assuming the
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Answer:

y(x) = 9 + 0.25*(18 - x)

Step-by-step explanation:

We have the following variables:

y: hours of sleep

x: age

Each day, a young person should sleep 9 hours

This means that y is 9 added to something

plus 1 4 hour for each year that the person is under 18 years of age.

For each year the person is under 18 years of age, she should sleep 1/4 = 0.25h on top of the 9 hours.

So the equation relating hours of sleep y and age x is:

y(x) = 9 + 0.25*(18 - x)

7 0
3 years ago
100 points and i will mark brainlest
12345 [234]

Answer:

Step-by-step explanation:

150n to the right

7 0
3 years ago
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