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jeka57 [31]
3 years ago
11

Help guysss :((( please it's due Monday :((((((((((( pleaseeeeeeweeeee

Mathematics
2 answers:
yanalaym [24]3 years ago
4 0
Left over is 456 minus total of A+B+C
456-334=122
C d are equal so 122/2=61
galben [10]3 years ago
3 0
Try this:  Add up the given widths of the first 3 bookcases, in cm.  This will be a constant.  Now write "-2w" after that sum, to represent two more bookcases of unknown widths w.  Finally, use the inequality symbol (less than or equal to) and the given wall length to complete this inequality.  

Solve it for w, writing your answer as another inequality.
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Dr. Campbell put 3.456 ounces of pills into bottles. She put 0.036 ounce of pills into each bottle. How many bottles did Dr. Cam
bija089 [108]

Answer:

c) 96

Step-by-step explanation:

3.456÷ 0.036

the answer is 96

4 0
2 years ago
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14 in.
kompoz [17]

Answer: 68 cubic inches

Step-by-step explanation:

basically the volume of the rectangular prism would be 2 x 2 x 14, so that's 56. Then the area of the triangular prism is 3 x 2 x 2, divided by 2, which is 6. There are two triangular prisms so that' 12. 56 + 12 is 68. That's the answer

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2 years ago
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Alex has a 70 percent of her weekly paycheck automatically deposited into a saving account this week 35 is deposited Alex wants
garri49 [273]

Answer: 50

Step-by-step explanation:

Let X represents his total weekly pay check

Hence, 70% of X = 35

70/100 × X =35

0.7 × X =35

0.7X =35

X = 35 ÷ 0.7

X = 50

X which is 50 is Alex 100% weekly pay check.

8 0
3 years ago
Bob is 10 years older than jake. the sum their ages is 38 how old are they?
ser-zykov [4K]
Bob is 24. Jake is 14.

24 + 14 = 38.
7 0
3 years ago
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In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 5000 subjects randomly selected
mixas84 [53]

Answer:

As the P-value (0.086) is greater than the significance level (0.01), the effect is  not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the return rate is less than 15%.

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that the return rate is less than 15%.

Then, the null and alternative hypothesis are:

H_0: \pi=0.15\\\\H_a:\pi

The significance level is 0.01.

The sample has a size n=5000.

The sample proportion is p=0.143.

p=X/n=717/5000=0.143

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.15*0.85}{5000}}\\\\\\ \sigma_p=\sqrt{0.000026}=0.005

Then, we can calculate the z-statistic as:

z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.143-0.15+0.5/5000}{0.005}=\dfrac{-0.007}{0.005}=-1.366

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

P-value=P(z

8 0
3 years ago
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