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denis-greek [22]
3 years ago
14

I need help on this.

Mathematics
2 answers:
marta [7]3 years ago
8 0

Answer:

26.88 mm

Step-by-step explanation:

4.2 x 12.8 = 53.76/2 = 26.88

BlackZzzverrR [31]3 years ago
3 0

Answer:

28.3 i think

Step-by-step explanation:

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I need help please someone
marta [7]

Answer:

B

Step-by-step explanation:

Earths resources are not distributed evenly, take other resources such as gold for example, you can't find gold everywhere, only in certain places.

4 0
3 years ago
stat: sample of 780 adults in the U.S.A., it was found that 80 of those had a pinworm infestation. You want to find the 99% conf
Anettt [7]

Answer: 554

Step-by-step explanation:

If prior population proportion is known, then the formula to find the sample size is given by :-

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2

As per given description, we have

p= 0.1

E=0.025

Critical z-value for 95% confidence : z_{\alpha/2}=1.96

Then,

n=0.1(1-0.1)(\dfrac{1.96}{0.025})^2=553.1904\approx554

Hence, the minimum sample size required = 554.

7 0
3 years ago
Use the given parent function f(x) = [x] to graph g(x) = [x]+3​
Brut [27]

Answer:

Shift the graph up 3 units.

8 0
3 years ago
Ben has agreed to play fewer video games and spend more time studying. He has agreed to play less than 10 hours of video games e
Ahat [919]

Answer:

t < 1.5

Step-by-step explanation:

Mon-Thu: 5.5 hours

each of the remaining 3 days: t hours each day

total time: 3t + 5.5

The total time must be less than 10 hours.

3t + 5.5 < 10

3t < 4.5

t < 1.5

8 0
2 years ago
Geometry math question no Guessing and Please show work thank you
Lelu [443]

DE + EF = 4x+2

DE = x+7

EF = 7

Substitute these in

x + 7 + 7 = 4x + 2

x + 14 = 4x + 2

subtract x from both sides

14 = 3x + 2

subtract 2 from both sides

3x = 12

divide both sides by 3

x = 4

substitute this in to find the length of DE

DE = x + 7

(4) + 7 = 11

the answer is 11

5 0
3 years ago
Read 2 more answers
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