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2 years ago

Help me please (do the highlighted ones only

Mathematics

1 answer:

mr Goodwill [35]2 years ago

4 0

Answer:

2. 1/5

4. 1/25

6. 75%

8. 44%

10. 70% of the day sleeping.

12. He has 84% of the available quarters.

P.S. I hope this helps! This may be incorrect, so you may need to check. By the way, remember to try to do at least of the work and not rely too much on Brainly :)

The thing is, these are benchmark fractions and percentages, so they're really important to learn. You use them <em>all the time</em> as you grow older, and you won't always get the chance to look them up. Best of luck ^-^

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The data below are the ages and systolic blood pressures (measured in millimeters of mercury) of 9 randomly selected adults. Age

Ipatiy [6.2K]

Answer:

156

Step-by-step explanation:

Given the data:

Age (X) :

Pressure(Y) :

116

120

123

131

142

145

148

150

152

From the data, we could obtain a regression equation to mod the data Given using a linear regression calculator :

The regression equation obtained is :

y = 1.48769X + 60.46103

Using the model, the predicted blood pressure for a person aged 64 will be :

y = 1.48769(64) + 60.46103

y = 95.21216 + 60.46103

y = 155.67319

y = 156 (nearest whole number)

3 0

2 years ago

The 300 people who were lined up outside the amusement park had all entered by 8:15 a.m. By 8:30, 550 more had entered. The numb

Tasya [4]

Answer:

250; $p= 300 + \frac{50}{3}t$

Step-by-step explanation:

a. 15 minutes passed, so there would be 250 people who came in

b. You would create a formula, where t = time after 8:15 (in minutes), while p = people who are at the parade

$300 + \frac{250}{15}t = p$ , which equals $p= 300 + \frac{50}{3}t$

7 0

3 years ago

State the domain and range of both the function and the inverse function. f(x) = 8 x + 8 f -1(x) = Domain of f(x): Range of f(x)

Katena32 [7]

Answer:

$f^{-1}(x) = \frac{x+8}{8}$

Domain of f(x): All real values.

Range of f(x): All real values.

Domain of f -1(x): All real values.

Range of f -1(x): All real values

Step-by-step explanation:

We are given the following function:

$f(x) = 8x + 8$

Since it is a line, we have that both the domain is the range is the real set.

Inverse function:

The domain of the inverse function is the range of the original function, and the range of the inverse function is the domain of the original function.

Finding the inverse function:

Exchange x and y in the original function, and isolate y. So

Original

$y = 8x + 8$