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Irina-Kira [14]
3 years ago
14

I need help on this question

Mathematics
1 answer:
AleksandrR [38]3 years ago
6 0
11.84 rounded to the nearest whole number is 12. It’s simple add all c,d, and f percents. Then turn the percent into a decimal by dividing by 100, and multiply that decimal by the students , which is 32.
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What is the probability that the sun will not rise tomorrow
Bingel [31]

Answer:

given the sun has risen every day for the last 5000 years — or 1,826,213 days — the probability it will rise tomorrow is 1,826,214 / 1,826,215. which is 99.9%

6 0
3 years ago
Write an equation of the circle given its center and radius
Genrish500 [490]

Answer:

y =x² + y² + 2y - 35

Step-by-step explanation:

The equation of a circle is given by the formula;

(x-a)²+(x-b)² = r²

Where;  (a, b) is the center of the circle and r is the radius

Therefore;

(x-0)² +(y+1) = 6²

x²+ y² +2y + 1= 36

x² + y² + 2y - 35 = 0

Therefore; The equation of the circle is y = x² + y² + 2y - 35

5 0
3 years ago
Read 2 more answers
Mrs. Nixon went to the store to buy candy for her
AnnyKZ [126]

Answer:

$2.25

Step-by-step explanation:

First, we (always) highlight key details. In this case, we would highlight that th candy is 90 cents per pound, and the she bought 2.5 pounds. Now, we just multiply 2.5 by .90, and boom! We get $2.25. Mrs. Nixon spent $2.25 (or two dollars and twenty-five cents) on candy bars.

8 0
3 years ago
In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

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

1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)

6 0
3 years ago
Charmaine pays $848 for landscaping rocks for a project. The cost per pound is 32 cents. How many pounds did she purchase? 0.265
krok68 [10]

Answer:

2,650 pounds

Step-by-step explanation:

Given data

Amount paid= $848

Rate = 32 cents= $0.32

Hence the amount she purchased is

Quantity= Amount* Rate

Quantity = 848/0.32

Quantity= 2650

3 0
3 years ago
Read 2 more answers
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