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3 years ago

PLEASE PLEASE PLEASE ANSWER

Mathematics

1 answer:

telo118 [61]3 years ago

3 0

Answer:

the answer is D

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To create an entry code you must choose the first three letters and three single digit numbers how many different entry code can

Dmitry_Shevchenko [17]

Answer:

Step-by-step explanation:

3*3=9

ABC and 123

A1 B1 C1 A2 B2 C2 A3 B3 C3

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3 years ago

Lian is deciding which of two gyms to join. Each gym charges a monthly rate plus a one-time membership fee.

BartSMP [9]

The conclusion is that both gym charge the same, because the identity 75 = 75 means that the two equations are equivalent (the same).

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3 years ago

Read 2 more answers

The mayor of a town has proposed a plan for the construction of an adjoining community. A political study took a sample of 900 v

Aleks04 [339]

Answer:

P-value = 0.0367

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that the percentage of residents who favor construction is significantly over 42%.

Then, the null and alternative hypothesis are:

$H_0: \pi=0.42\\\\H_a:\pi>0.42$

The sample has a size n=900.

The sample proportion is p=0.45.

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.42*0.58}{900}}\\\\\\ \sigma_p=\sqrt{0.000271}=0.016$

Then, we can calculate the z-statistic as:

$z=\dfrac{p-\pi-0.5/n}{\sigma_p}=\dfrac{0.45-0.42-0.5/900}{0.016}=\dfrac{0.029}{0.016}=1.79$

This test is a right-tailed test, so the P-value for this test is calculated as:

$\text{P-value}=P(z>1.79)=0.0367$

4 0

3 years ago

A dog is leashed to a point in the center of a large yard. If the leash is 18.8 feet long, what is the total area of the region

Orlov [11]

Answer:

1109.8 square feet

Step-by-step explanation:

In this case, assume the leash to be the radius of the circular yard.

Area

πr²
3.14 x (18.8)²
3.14 x 353.44
1109.8 square feet

5 0

3 years ago

A chess club plans to sell water to raise $425 and they already have 175, if they sell water bottles for 8$ each, at least how m

alisha [4.7K]

Answer:

32 water bottles

Step-by-step explanation:

8x=425-175

425-175=250

250 is how much more they need.

8x=250

x=31.25

You can't have half of a bottle... so round up to at least 32 water bottles

4 0

3 years ago