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2 years ago

If someone has a cube shaped box that measures 9 inches along each edge. Can they fit 1,000 1 square inch cubes inside the box

Mathematics

1 answer:

Stolb23 [73]2 years ago

4 0

Answer:

The area of the box is equal to 9^3 = 729 in^3

729<1000

Step-by-step explanation:

No since the volume of the box is less than the total volume of the cubes

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Which number sentence correctly solves this problem? There were 52,165 people at the soccer game on Friday. There were 49,872 pe

Romashka [77]

Answer: D.

Step-by-step explanation:

52,165 + 49,872 = 102,037

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2 years ago

PLEASE HELP!!

irina [24]

Answer:

$\leadsto make \: y \: subject \\ - 3y + 2x = 5y - 8 \\ - 3y - 5y = - 2x - 8 \\ y( - 3 - 5) = - 2x - 8 \\ - 8y = - 2x - 8$

divide through out by -8 :

${ \boxed{ \boxed{y = \frac{1}{4} x + 1}}}$

Answer is b

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2 years ago

The dot plot shows the number of miles Jamal biked per week for ten weeks. Which measure of central tendency best represents the

vitfil [10]

Answer:The answer is Mean or Median

Step-by-step explanation:

Mean represents the average of a set of values which is gotten by adding the miles then diving by the total number .

Mean generally gives you the average ,so it is the best means to get the number of miles and it is also the most frequently used

Median is the mid number (s) in a data set .

Median is useful in this data because there are some missing values in the data .

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3 years ago

50 random teenagers were asked how many hours a day they use their phone. They spent an average of 7 hours a day with a standard

tatyana61 [14]

Answer:

The margin of error for the true mean number of hours a teenager spends on their phone is of 0.4 hours a day.

Step-by-step explanation:

We have the standard deviation of the saple, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 50 - 1 = 49

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 49 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.95}{2} = 0.975$ . So we have T = 2

The margin of error is:

$M = T\frac{s}{\sqrt{n}} = 2\frac{1.3}{\sqrt{50}} = 0.4$

In which s is the standard deviation of the sample and n is the size of the sample.

The margin of error for the true mean number of hours a teenager spends on their phone is of 0.4 hours a day.

4 0

2 years ago

How do you solve this step by step?

Sphinxa [80]

Answer:

x = 41

Step-by-step explanation:

To solve this problem, we want to find the value of 'x' by isolating it (separating 'x' from all other numbers).

First, simplify the expression by using the <u>distributive property</u>, where you multiply the number outside the brackets with each term inside the brackets.

Then isolate 'x' by doing reverse operations (on both sides) for every number that is on the same side as 'x'. Reverse operations are opposites (addition and subtraction, multiplication and division) and "cancel out" a number, which "moves" it to the other side.

7(x - 5) = 252 Use the distributive property

7x - 35 = 252 Result of 7 times x and 7 times -5

7x - 35 + 35 = 252 + 35 Add 35 to both sides

7x = 252 + 35 -35+35 on the left side cancelled out. Simplify right side

7x = 287 Continue to isolate 'x'

7x/7 = 287/7 Divide both sides by 7

x = 287/7 Left side cancelled out to be 'x'. Simplify the right side

x = 41 Answer

Check your answer:

Substitute 'x' for 41 in the original equation. Then, make sure that the equation is still balanced. Keep in mind BEDMAS order (brackets, exponents, division, multiplication, addition, subtraction).

7(x - 5) = 252

7(41 - 5) = 252 Simplify inside the brackets first

7(36) = 252 Multiply

252 = 252 Same answer

LS = RS

Since left side (LS) equals (=) right side (RS), the equation is still balanced and we got the correct value for 'x'.

6 0

2 years ago