3 years ago

I need help on this problem

Mathematics

1 answer:

dlinn [17]3 years ago

7 0

I think the answer might be B

You might be interested in

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

podryga [215]

Answer:

Step-by-step explanation:

30 meters

5 0

3 years ago

I am so very confused, answers please.

Tasya [4]

I hate it here and also math sorry hint try a gaine a aging number too

7 0

3 years ago

Read 2 more answers

A researcher wishes to estimate, with 9999% confidence, the population proportion of adults who think Congress is doing a goo

jok3333 [9.3K]

Answer:

a: 1037 is the minimum sample size needed

b: 712 is the minimum sample size needed

Step-by-step explanation:

We need to use the formula for minimum sample size of a proportion when a sample proportion is known.

The level of confidence is 99%, which has a corresponding z-value of 2.575.

We know the desired error is 4%, or 0.04.

Part a: We have no prior estimate. See attached photo for calculation

Part b:

We know p-hat = 0.22. Therefore q-hat = 1 - 0.22 = 0.78

See the attached photo for the calculation of the minimum sample size

3 0

3 years ago

What is the answer to this 9(8y+8)

marta [7]

Answer:

72y+72

Step-by-step explanation:

9(8y+8)

72y+72

4 0

3 years ago

Read 2 more answers

can someone help me anyone please Giselle works as a carpenter and as a blacksmith.She earns \$20$20dollar sign, 20 per hour as

Artemon [7]

Let she work for x hours as carpenter !
so earned money = 20x

and for blacksmith she must work for 30-x hours

so earned money = (30-x) ×25

so putting in eqn;

20x+25(30-x) = 690
so, x= 60/5 = 12

so she works for carpenter for 12 hrs and 30-12= 18 hrs for blacksmith

6 0

3 years ago