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Elan Coil [88]
3 years ago
9

15a. Cindy can make $100 in four days babysitting. At that rate, how many day will it take

Mathematics
1 answer:
Sophie [7]3 years ago
6 0

Answer:

4.2

Step-by-step explanation:

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Hi :), im really struggling with this. Just wanted to know if anyone can explain step by step for me please. Id really appreciat
Dvinal [7]

Answer:

314 m²

Step-by-step explanation:

the formula for the surface area of a sphere (As) is

As = 4×pi×r²

the radius r (half of the diameter) is clearly indicated as 5m.

so, As = 4×3.14×5² = 4×3.14×25

I don't even need a calculator for this, as 4×25 = 100

so, As = 100×3.14 = 314

(you know, when multiplying by 10, the decimal point moves right one position. multiply by 100 it moves 2 positions, and so on).

7 0
3 years ago
The Frostburg-Truth bus travels on a straight road from Frostburg Mall to Sojourner Truth Park. The mall is 3 miles west and 4 m
Advocard [28]
The park is a total of 3+3 = 6 miles east of the mall, and 4+5=9 miles north of it. The Pythagorean theorem tells you the straight-line distance in miles is
  √(6² +9²) = √117 ≈ 10.8

7 0
3 years ago
Tory deposited 3100 and to a savings account that pays simple annual interest rate of 3.38% how much interest will she earn afte
sergiy2304 [10]

Answer:

$157.17

Step-by-step explanation:

Interest is the amount of return that someone receive on the amount invested in a bank or in a business. The annual interest rate is defined on the invested amount. The amount invested is called the principal and.

By applying the interest rate on the principal amount, we can calculate the annual interest earning.

Principal = $3,100

Rate of simple interest = 3.38% per year

Now, define the total time period.

Time period = 18 months = 18 / 12 = 1.5 years

Now calculate the Total interest earning.

Interest Earned = $3,100 x 3.38% x 1.5 = $157.17

4 0
3 years ago
Select the quadratic that has roots x = 8 and x = -5.
Mars2501 [29]

\text{ The roots  are}~ \alpha = 8~ \text{and}~ \beta = -5\\\\\text{Equation for the given roots,}\\\\x^2 -(\alpha +\beta )x +\alpha \beta = 0\\\\\implies x^2 -(8-5)x + 8(-5)=0\\\\\implies x^2 -3x -40=0\\\\\text{Hence, the answer is option B}

6 0
2 years ago
Mr Kendrick is trying to organize his year 7 class into rows for their class photograph. If Mr Kendrick wishes to organize the 2
inysia [295]
Just list the factors of 24. Those are the possible numbers of students that can be in each row.

1,2,3,4,6,8,12,24 are the possible row sizes.
5 0
3 years ago
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