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JulsSmile [24]
3 years ago
11

What is equivalent to the product of 6 x 10 to the 9th power + 3 x 10 to the 7th power

Mathematics
1 answer:
Tems11 [23]3 years ago
7 0
The sum 6×10⁹ + 3×10⁷ is
  6×10⁹ +0.03×10⁹ = 6.03×10⁹
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A used bookstore will trade 2 of its books for 3 of yours. If Val brings in 18 books to trade, How many books can she get from t
dolphi86 [110]

Answer:

She will get 12 books from the store

Step-by-step explanation:

We can use ratio's to solve

2 books out      x books out

------------------- =-----------------------------

3 books in          18 books in from Val


Using cross products

2 * 18 = 3 *x

Divide each side by 3

2*18 /3 = 3x/3

2*6 = x

12 =x

She will get 12 books from the store

8 0
3 years ago
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Simon and greg shared pencils in the ratio 7:5. if simon gives away 30 pencils and greg gets 30 more pencils, they will have the
Dafna1 [17]
Simon has 210 pencils
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3 years ago
Least common denominator?
Over [174]

Answer:

\large\boxed{(s-2)(s+2)(s-3)=(s^2-4)(s-3)=s^3-3s^2-4s+12}

Step-by-step explanation:

s^2-4=s^2-2^2=(s-2)(s+2)\\\\\text{used}\ a^2-b^2=(a-b)(a+b)\\\\s^2-5s+6=s^2-2s-3s+6=s(s-2)-3(s-2)=(s-2)(s-3)\\\\\text{Therefore}\ LCD(s^2-4,\ s^2-5s+6)=(s-2)(s+2)(s-3)

4 0
3 years ago
Katoni bought 1 1/2 dozen pencils. There are 12 pencils in a dozen. How many pencils did Katoni buy?
DanielleElmas [232]

Answer:

18 pencils

Step-by-step explanation:

1/2 dozen:6

1 dozen:12

6+12=18

18 pencils

7 0
3 years ago
If the area of a circle measures 25 cm?, what is the circumference of the circle in terms of ?
daser333 [38]
The correct answer is 5 cm
7 0
3 years ago
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