3 years ago

In the bar graph shown, what is the total world population?

Mathematics

1 answer:

Sergeu [11.5K]3 years ago

3 0

Answer: The total world population is 57,340,000

Step-by-step explanation: The addition of all of the populations equal 57.34 million.

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How much water should be added to 12mL of 7% alcohol solution to reduce the concentration to 6%?

lana [24]

Answer:

7%*12=6%(12+x)

.84=.72+.06x

.06x=.12

x=2

how much water should be added to 12 mL of 7% alcohol to reduce concentration to 6%? 2 ML

Step-by-step explanation:

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3 years ago

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1/128 = 2^(5x+3) anybody know what x is

Jet001 [13]

Answer:

${2}^{(5x + 3)} = \frac{1}{128} \\ {2}^{(5x + 3)} = \frac{1}{ {2}^{7} } \\ {2}^{(5x + 3)} = {2}^{ (- 7)} \\ 5x + 3 = - 7 \\ 5x = - 7 - 3 \\ 5x = - 10 \\ x = \frac{ - 10}{5} \\ \boxed{x = - 2}$

x = -2 is the right answer.

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3 years ago

A store pays $8 for a toy boat. The store marks up the price by 30%. What is the new price?

adelina 88 [10]

Answer:

Your answer is $10.40

Step-by-step explanation:

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4 years ago

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What is the product? Assume x greater-than-or-equal-to 0 (StartRoot 3 x EndRoot + StartRoot 5 EndRoot) (StartRoot 15 x EndRoot +

Nikitich [7]

Answer:

3x√5 + 6√(10x) + 5√(3x) + 10√6

Step-by-step explanation:

$(\sqrt{3x}+\sqrt{5})(\sqrt{15x}+2\sqrt{30})=\sqrt{3x}(\sqrt{15x}+2\sqrt{30})+\sqrt{5}(\sqrt{15x}+2\sqrt{30})\\\\=\sqrt{45x^2}+2\sqrt{90x}+\sqrt{75x}+2\sqrt{150}\\\\=\sqrt{5(3x)^2}+2\sqrt{10x(3)^2}+\sqrt{3x(5)^2}+2\sqrt{6(5)^2}\\\\=\boxed{3x\sqrt{5}+6\sqrt{10x}+5\sqrt{3x}+10\sqrt{6}}$

The applicable rules of roots are ...

(√a)(√b) = √(ab)

√(ab²) = b√a

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3 years ago

If 8% tip is given on a dinner bill, and the tip amount was $13.50, how much was the dinner bill after the tip was added?

Nina [5.8K]

Answer: $14.58

Step-by-step explanation: 8% of $13.50 is $1.08 so $1.08 + $13.50 = $14.58

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