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Elanso [62]
2 years ago
8

Pls help me rn bec sue tmr pls pls

Mathematics
1 answer:
blagie [28]2 years ago
3 0

Answer:

Number of 1-cm cube 24. Volume of solid 24 cm^2

Step-by-step explanation:

You might be interested in
A math club has 40 members. The number of girls is 5 less than 2 times the number of boys. How many members are boys? How many m
murzikaleks [220]
Let b=# of boys
Let g=# of girls
B+g=40
G=2b-5
Sub g into first equation and solve for b
B+2b-5=40
3b-5=40
3b=40+5
3b=45
B=45/3
B=15
Sub B into the second equation
G=2b-5
G=2(15)-5
G=30-5
G=25
Hope this helps!
6 0
3 years ago
A line segment of length k is divided into 3 equal parts what is the distance between midpoints of the first and third segments
anastassius [24]

Line segment of length k is divided into 3 equal parts.

so first segment is 0-k/3 and third segment is 2/3k-k

so mid-pt of 1st = k/6 and 3rd = 5/6k

so the distance in between = 5/6k-k/6 = 4/6k = 2/3k

4 0
2 years ago
Which of the following are in correct order from greatest to least?
irga5000 [103]

Answer:

pi/2, 330 degres,5pi/3, 7pi/6, 2pi/3 5pi/3, 7pi/6, 2pi/3, pi/2, 330

this the correct answer hope this helps you !!

3 0
3 years ago
Expand &amp; simplify <br> (2x+6)(x−9)
Alex777 [14]

Answer:

2x^2-12x-54

Step-by-step explanation:

First 2x times x along with 2x times -9

Second 6 times x  along with 6 times -9

2x^2-18x+6x-54

=2x^2-12x-54

8 0
2 years ago
In a study of the impact of smoking on birth weight, researchers analyze birth weights (in grams) for babies born to 189 women w
kompoz [17]

Answer:

c. Smoking is associated with lower birth weights. When smokers are compared to nonsmokers, we are 95% confident that the mean weight of babies born to nonsmokers will be between 76.5 grams to 486.9 grams more than the mean birth weight of babies born to smokers.

Step-by-step explanation:

The difference in mean birth weights (nonsmokers minus smokers) is 281.7 grams with a margin of error of 205.2 grams with 95% confidence.

Then, we know that the 95% confidence interval is (76.5, 486.9)

LL=M-MOE=281.7-205.2=76.5\\\\UL=M-MOE=281.7+205.2=486.9

<em>a. We are 95% confident that smoking causes lower birth weights by an average of between 76.5 grams to 486.9 grams.</em>

False, it interprets the confidence interval as a probability for individual cases. The confidence interval is a range for the population mean.

<em>b. There is a 95% chance that if a woman smokes during pregnancy her baby will weigh between 76.5 grams to 486.9 grams less than if she did not smoke.</em>

False, it interprets the confidence interval as a probability for individual cases. The confidence interval is a range for the population mean.

<em>c. Smoking is associated with lower birth weights. When smokers are compared to nonsmokers, we are 95% confident that the mean weight of babies born to nonsmokers will be between 76.5 grams to 486.9 grams more than the mean birth weight of babies born to smokers.</em>

True.

<em>d. With such a large margin of error, this study does not suggest that there is a difference in mean birth weights when we compare smokers to nonsmokers.</em>

There is enough evidence, as the lower bound of the confidence is positive. This means that there is only a probability of 0.05/2=0.025 that the true mean weight difference is smaller than 76.5 grams.

6 0
3 years ago
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