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Luden [163]
3 years ago
13

Please help urgent!!!!

Mathematics
1 answer:
postnew [5]3 years ago
6 0

Answer:

B

Step-by-step explanation:

let y = f(x) and rearrange making x the subject

y = (2x - 4)² ( take the square root of both sides )

\sqrt{y} = 2x - 4 ( add 4 to both sides )

\sqrt{y} + 4 = 2x ( divide terms on both sides by 2 )

\frac{1}{2}\sqrt{y} + 2 = x

x = \frac{1}{2}\sqrt{y} + 2

Change y back into terms of x

f^{-1}(x) = \frac{1}{2}\sqrt{x} + 2, x ≥ 0

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For males in a certain town, the systolic blood pressure is normally distributed with a
GREYUIT [131]

Answer:

99.7%

Step-by-step explanation:

Note that 92 and 128 are 3 standard deviations from the mean

The emperical rule or the  68–95–99.7 rule states that 68% of outcomes are wihtin 1 standard deviation from the mean

95% of outcomes are within 2 standard deviations from the mean

99.7% of outcomes are within 3 standard devations from the mean

This is 3 standard deviations so the answer is 99.7

7 0
3 years ago
Can 4:10 be switched to 10:4
ValentinkaMS [17]
It depends on the question . What is the question asking about?
5 0
3 years ago
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An ice cream machine produced 45 ice cream sandwiches per minute. After reconditing, its speed increased to 54 ice cream sandwic
Tanya [424]
<h2>Percent of speed the machine increase is 20%</h2>

<h2>Given that;`</h2>

Number of ice cream produced before = 45

Number of ice cream produced after = 54

<h2>Find:</h2>

Percent of speed the machine increase

<h2>Computation:</h2>

Percent of speed the machine increase = [Number of ice cream produced after - Number of ice cream produced before] / Number of ice cream produced before

Percent of speed the machine increase = [(54 - 45) / 45]100

Percent of speed the machine increase = [9 / 45]100

Percent of speed the machine increase = 20%

<h2>Learn more:</h2>

brainly.com/question/15013012?referrer=searchResults

4 0
2 years ago
Read 2 more answers
Can someone help i will give brainliest
xxTIMURxx [149]

Answer:

24

Step-by-step explanation:

the rate of change is represented by the 24,  just like in the slope-intercept equation  y = mx + b, where "m" represents the slope, or rate of change.  

4 0
2 years ago
Divide £250 to ratio 3:6:1
fiasKO [112]
Answer --> 75 : 150 : 25

3/10 x 250 = 75
6/10 x 250 = 150
1/10 x 250 = 25
7 0
3 years ago
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