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3 years ago

Can someone plz help me I’m being timed!!!!

Mathematics

2 answers:

nikklg [1K]3 years ago

7 0

Answer:

49 and 58

Step-by-step explanation:

pls brainliest

Tema [17]3 years ago

3 0

Answer:

7. 49

8. 56

Step-by-step explanation:

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The area of the hexagonal base is 58 square inches.

kenny6666 [7]

Answer:

362.5 in^3

Step-by-step explanation:

V = (face [surface] area)(height)

V = 58(6.25) = 362.5

6 0

3 years ago

Radon: The Problem No One Wants to Face" is the title of an article appearing in Consumer Reports. Radon is a gas emitted from t

brilliants [131]

Answer:

a) $\bar{x}$ =4.63 md=4.55 mo= 1.9 b) Sample Standard Deviation≈ 2.58 Coefficient of Variation=55.72% Sample Range=6.9

Step-by-step explanation:

Mean

$a)\bar{x}=\frac{1.9+ 2.3+ 5.7+ 5.2+ 1.9+ 8.8+ 3.9+ 7.3}{8} =\frac{37}{8}=4.625=\approx 4.63$

For the Median, we have to order the entries. So, ordering it goes:

1.9 1.9 2.3 3.9 5.2 5.7 7.3 8.8

Since we have even entries $\frac{\frac{n}{2}+\frac{n}{2} +1}{2}=\frac{4th+5th}{2}=\frac{3.9+5.2}{2}=4.55$

mode

The mode for this data 1.9 1.9 2.3 3.9 5.2 5.7 7.3 8.8 is 1.9

Sample Standard Deviation

Here it is the formula to calculate it:

$_{x}=\sqrt{\frac{\sum (x_{i}-\bar{x})^{2}}{n-1}}\\ S_{x}=\sqrt{\frac{46.855}{7}}\approx 2.58$

Coefficient of Variation

CV is the quocient between sample Standard deviation over Mean and it is used to make comparisons.

$CV=\frac{S_x}{\bar{x}}*100%=\frac{2.58}{4.63} \approx 55.72%$

Range

The difference between the highest and the lowest value of this sample

8.8-1.9=6.9

4 0

3 years ago

Elena divided a decimal by a whole number. 84.36 ÷ 12 = ? Part A: Explain each step needed to divide 84.3y by 12. Part B: What i

Iteru [2.4K]

Answer:

Part A. $\frac{84.3y}{12} = 7 +\frac{0.1\cdot y}{4}$

Part B. The correct quotient is (3 × 4)

Step-by-step explanation:

Part A.

To divide 84.36 by 12 we look for the Highest Common Factor of the whole number and the decimal portions of the numerator and the denominator individually as follows;

$\frac{84.36}{12} = \frac{84+0.3636}{12} = \frac{2 \times 2 \times 3 \times 7+0.01\times 12\times 3}{12} = \frac{12 \times 7+0.03\times 12}{12}$

Therefore, dividing 84.36 by 12 gives $\frac{12 \times 7+0.03\times 12}{12} = 7+0.03$ = 7.03

When dividing 84.3·y by 12, therefore, we have;

$\frac{12 \times 7+0.3\times y}{12} = 7 +\frac{0.1\cdot y}{4}$

Part B.

The correct quotient should have factors of the numerator

Therefore the divisor 12 should be represented as follows

$\frac{12 \times 7+0.3\times y}{12} =\frac{12 \times 7+0.3\times y}{3 \times 4}$

The correct quotient therefore = (3 × 4)

7 0

3 years ago

What’s the surface area of this prism?

finlep [7]

Answer:

580

Step-by-step explanation:

1/2 6x10 x2 for the two bases is 60. for the rams is 20x8 x2 cause there is two ramps. then the bottom is 10 x 20 is 200. add them all up and get 580.

6 0

3 years ago

Read 2 more answers

What is the differences between Mathematics and Science

miss Akunina [59]

I’m not sure if you’re looking for a specific answer, but on a broad spectrum science is typically just applied mathematics. Math can be incorporated into all sciences, especially physics. On occasion, science can also be included in math, like when using derivatives to find the acceleration of a moving object. All in all though, the two subject are very connected.

7 0

3 years ago