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2 years ago

Need help asap thanks y'all

Mathematics

2 answers:

Afina-wow [57]2 years ago

8 0

Answer:

It would be 15 cm. because if the triangles are similar then BC = EF

<h2>Please mark me the brainliest!!!</h2>

Vilka [71]2 years ago

5 0

Answer:

what do you need help with?

Step-by-step explanation:

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How many multiples of 7 are less than 1270 and more than 950

Goryan [66]

Answer:

45 i think its right or 46

7 0

2 years ago

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con

Assoli18 [71]

Question:

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 97% , how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 18 years.

Answer:

61.03

Step-by-step explanation:

Given:

Standard deviation = 18

Sample estimate = 5

Confidence level = 97%

Required:

Find sample size, n.

First find the Z value. Using zscore table

Z-value at a confidence level of 97% = 2.17

To find the sample size, use the formula below:

$n = (Z * \frac{\sigma}{E})^2$

$n = ( 2.17 * \frac{18}{5})^2$

$n = (2.17 * 3.6)^2$

$n = (7.812)^2$

$n = 61.03$

Sample size = 61.03

4 0

3 years ago

Which of the following functions best represents the graph?

cricket20 [7]

Answer:

f(x) = (x + 3)(x − 3)(x − 1)

Step-by-step explanation:

The roots are at -3, -1 and 3 therefore the 3rd option is correct.

4 0

2 years ago

On a graph with y-values ranging from 1,013,020 to 9,618,115, what is a reasonable scale to use on a y-axis with 10 tick marks?

Dominik [7]

9618115-1013020 = 8605095

8605095/10 = 860509.5 per tick mark starting at 1,013,020

8 0

2 years ago

Please help me due ASAP

Nady [450]

A) supplementary angles
B) corresponding angles
C) supplementary angles
D) alternative interior angles
E) vertical angles
F) alternative interior angles
G) corresponding angles
H) alternative interior angles
I) vertical angles
J) alternative interior angles
K) alternative interior angles
L) corresponding angles
M) supplementary angles
N) Alternative interior angles
O) vertical
i think those are correct if not i’m sorry but i’m pretty sure !! :)

3 0

2 years ago