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3 years ago

WILL GIVE BRAINLIEST

Mathematics

1 answer:

steposvetlana [31]3 years ago

4 0

Answer:

Page 3 - the y-intercept would remain at 5 and the slope would be 3 times the upward slope.

Page 5 - the y-intercept would remain at -2 and the slope would be 1/4 instead of 5

Step-by-step explanation:

In point slope form the slope and y-intercept can be read directly from the equation.

y = mx + b where m is the slope and b is the y-intercept.

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PLEASE HURRY!! CIRCUMFERENCE AND PIRIMITER APPLICATIONS question Don't mind the answer I put I didn't mean to click it... thank

Elanso [62]

Option C:

Perimeter of the $\frac{1}{4}$ of a circle = 10.71 cm

Solution:

Given figure is $\frac{1}{4}$ of a circle.

It is a quarter of a circle.

Radius = 3 cm, Value of <em>π</em> = 3.14

To find the perimeter of the quarter of a circle.

Perimeter of the quarter of a circle formula: $$\frac{\pi r}{2}+2r$

$\text {Perimeter} =\frac{\pi r}{2}+2r$

$=\frac{3.14\times3}{2}+2\times3$

$=4.71+6$

$=10.71$

Perimeter of the quarter of a circle = 10.71 cm

Option C: 10.7 is the correct answer.

Hence perimeter of the $\frac{1}{4}$ of a circle is 10.71 cm.

6 0

4 years ago

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lara [203]

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3 years ago

Just help on what to say here

erastovalidia [21]

The congruence symbol is this: ≅.

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3 years ago

What is -10 as a fraction?

Alexeev081 [22]

1/10

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3 years ago

A scientist studying water quality measures the lead level in parts per billion (ppb) at each of 49 randomly chosen locations al

NeX [460]

Complete Question

The complete qustion is shown on the first uploaded image

Answer:

The correct option is B

Step-by-step explanation:

From the question we are told that

The sample size is $n = 49$

The mean is $\mu = 17ppb$

The standard deviation is $\sigma = 14 ppb$

Generally the standard error of this measurement is mathematically represented as

$\sigma_z = \frac{\sigma}{\sqrt{n} }$

substituting values

$\sigma_{\= x} = \frac{14}{\sqrt{49} }$

$\sigma_{\= x} = 2$ ppb

Now the probability that the mean lead level from the sample of 49 measurements T is less than 15 ppb represented as P(X < 15 )

Next is to find the z value

$z = \frac{\mu -\sigma }{\sigma_{\= x}}$

$z = \frac{15-17}{2}$

$z = -1$

Now checking the z-table for the z-score of -1 we have

$P(X$

5 0

4 years ago