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3 years ago

A diver was exploring the ocean. The diver dove 32 ft. below sea level. Then dove another 45 ft. At what depth was the diver?

Mathematics

1 answer:

frez [133]3 years ago

7 0

Step-by-step explanation:

add 32 ans 45 together thats your answer

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Joe heard from a reliable source that only 22% of people actually sleep 8 hours or more per night. You do a survey and find 58 o

Juliette [100K]

Answer:

95% Confidence interval: (31.32%,47.04%)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 148

Number of people who sleep for 8 hours or longer, x = 58

$\hat{p} = \dfrac{x}{n} = \dfrac{58}{148} = 0.3918$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.3918\pm 1.96(\sqrt{\dfrac{0.3918(1-0.3918)}{148}})\\\\ = 0.3918\pm 0.0786\\\\=(0.3132,0.4704)=(31.32\%,47.04\%)$

(31.32%,47.04%) is the required 95% confidence interval.

8 0

3 years ago

A community action committee is planning a block party. The party will be successful only if at least 70 adults and children att

Sergeeva-Olga [200]

Answer:

A. a + c ≥ 70; 15a + 4c ≤ 1000

Step-by-step explanation:

Given data:

A community action committee is planning a block party

The party will be successful if at least 70 adults (a) and children (c) attend

Their budget for the party is $1,000

The cost for each adult will be $15

And the cost for each child will be $4

Solution:

At least 70 adults and children attend.

So the inequality here is a + c ≥ 70

The budget for the party is $1,000.

So the cost for all adults plus the cost for all children cannot exceed $1,000

And hence the inequality here is; 15a + 4c ≤ 1,000

3 0

3 years ago

Read 2 more answers

If x=5 and y=2 ...........................

azamat

${ \bold{ - 5}}$

${ \red{ \tt{given \: {\to}}}} \: { \bold{x = 5}} \: \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: { \bold{y = 2}}$

${ \green{ \tt{ \sqrt{10y + x} - xy}}}$

${ \green{ \tt{ \sqrt{10(2) + 5 } - 5(2)}}}$

${ \green{ \tt{ \sqrt{20 + 5} - 10}}}$

${ \green{ \tt{ \sqrt{25} - 10}}}$

${ \green{ \tt{5} - 10}}$

$= { \bold{ - 5}}$

8 0

8 months ago

Read 2 more answers

Jenise is buying a car for $7,155. The TAVT rate is 5.9%.

Afina-wow [57]

The answer is $7577.15

8 0

2 years ago

Using the order of operations rule solve the following 12 / 2 + 4 - 2 X 3 equals

Vladimir [108]

That means you first calculate divide and multiply and at the and plus and minus.
So
12 / 2 + 4 - 2 x 3 =
6 + 4 - 6 = 4

4 0

3 years ago

Read 2 more answers