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3 years ago

REwarding Brainliest to correct Answer

Mathematics

2 answers:

Pavel [41]3 years ago

8 0

Answer:

The Cottonball Marsh

Step-by-step explanation:

0.5, is half the length of 1 inch, and is smaller than all the other ones.

Scilla [17]3 years ago

7 0

Answer:

Cottonball Marsh

(very cool looking fishie)

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100 BRAINLY POINTS!!!

laila [671]

Answer:

C. Her sister grew about 0.75 inch each month.

Step-by-step explanation:

Given function:

y = 0.75x + 15

The function is linear and it represents:

y - current heigt of baby
x - number of months passed
0.75 - the slope is the monthly growth rate
15 - the y-intercept, is the initial height of baby

According the above explanation the correct answer choice is C

4 0

2 years ago

Read 2 more answers

The co-ordinate of point P is (x+3) and Q is (x-3). Then find d(P,Q). If coordinate of R is (x+2). Find d(Q,R).

kari74 [83]

Answer:

Step-by-step explanation:

The formula of a distance between two points A(a) and B(b):

We have P(x + 3), Q(x- 3), R(x + 2).

Substitute:

d(P, Q) = |(x - 3) - (x + 3)| = |x - 3 - x - 3| = |-6| = 6

d(Q, R) = |(x + 2) - (x - 3)| = |x + 2 - x - (-3)| = |2 + 3| = |5| = 5

5 0

3 years ago

The equations 2 x minus 5 y = negative 5, 11 x minus 5 y = 15, 9 x + 5 y = 5, and 14 x + 5 y = negative 5 are shown on the graph

Dafna11 [192]

Answer:

See attached graph

Step-by-step explanation:

8 0

3 years ago

What is 645/87 rounded to the nearest integer?

Vlad1618 [11]

Answer:

Step-by-step explanation:

Firstly, let us divide the two numbers as so-

$645/87=7.41379310345\\$

To round a number to the nearest integer, look at the decimal places.

Here we have .41 - The 4 is less than 5, so it cannot round the ones place to 8.

So our answer here is 7.

6 0

3 years ago

If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus3 and the standard

Aleksandr [31]

Answer:

The sample size required is at least 171

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What sample size is required?

A samle size of at least n is required, in which n is found when $M = 3, \sigma = 20$

$M = z*\frac{\sigma}{\sqrt{n}}$

$3 = 1.96*\frac{20}{\sqrt{n}}$

$3\sqrt{n} = 20*1.96$

$\sqrt{n} = \frac{20*1.96}{3}$

$(\sqrt{n})^{2} = (\frac{20*1.96}{3})^{2}$

$n = 170.7$

Rouding up

The sample size required is at least 171

5 0

3 years ago