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3 years ago

6) The population of rats doubles every 8 months. If there were 23 rats to start how many

Mathematics

2 answers:

taurus [48]3 years ago

7 0

Answer:

736

Step-by-step explanation:

Fittoniya [83]3 years ago

7 0

Answer:

368 rats

Step-by-step explanation:

First, you find how many times the population doubles. 32/8 = 4, so the population doubles 4 times.

So, the number of rats = 23 * (2^4) = 368

Or, instead of using exponents, you can double the population four times separately.

23 * 2 = 46

46 * 2 = 92

92 * 2 = 184

184 * 2 = 368 rats

P.S. Please give me brainliest, I need it to rank up.

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HElp please i need help in question number 5????

likoan [24]

Answer:

Step-by-step explanation:

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3 years ago

Kim, Laura and Molly share £385

trapecia [35]

Set x equal to the amount of money Kim gets, and y for Molly's money.

x = 2/5y, since the ratio is 2:5.
y = 105 + x, since Molly has 105 more pounds than Kim.

Substitute x into this equation, so that y = 105 + 2/5y. Subtract 2/5y from both sides to get 3/5y = 105. Divide each side by 0.6 (equivalent to 3/5) and you get y = 175, which is how much Molly has. Kim gets 2/5 of Molly's share (or 105 fewer pounds), so she has 70.

70 + 175 (Kim and Molly's shares) is equal to 245. Therefore, Laura receives the remaining 140 pounds.

140/385 = a/100
Cross multiply so that 385a is 14000. Divide by 385 to get 36.4 (rounded).

Thus, Laura receives about 36.4% of the total money. Hope this helps (:

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3 years ago

Write 6.92 x 10 -8 in standard notation.

Vaselesa [24]

There is 16 ounces in a pound, and #1 is B I believe

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3 years ago

Let f(x)=(18)3^x. find the equation of the line between the points (-2,f(-2)) and (1,f(1))

horsena [70]

$\text{Given that,} \\\\f(x) = 18 \cdot 3^x \\\\f(-2) = 18 \cdot 3^{-2} = 2\\\\f(1) = 18 \cdot 3^1 = 54\\ \\\text{So,}~ (x_1,y_1) = (x_1, f(-2)) = (-2,2) ~\text{and}~ (x_2,y_2) = (x_2, f(1)) = (1,54)\\ \\\text{Slope,}~ m = \dfrac{y_2 -y_1}{x_2 -x_1} = \dfrac{54-2}{1+2} = \dfrac{52}3 \\\\$

$\text{Equation of line,}\\\\~~~~~~~y - y_1 = m (x-x_1)\\\\\\\implies y-2 = \dfrac{52}3(x+2)~~~~~~~~~~~;[\text{Point-Slope form.]} \\\\\\\implies y-2 = \dfrac{52}3x + \dfrac{104}3\\\\\\\implies y = \dfrac{52}{3}x + \dfrac{104} 3 +2\\\\\\\implies y = \dfrac{52}3 x +\dfrac{110}3 ~~~~~~~~~~~~~~~;[\text{Slope -Intercept form}]$

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2 years ago

Mr.Hanson makes a rope by stringing dozens of tennis balls together. He ties one end of the rope to a tree and makes waves by ra

Dahasolnce [82]

The Answer Is A: Moves Up And Down

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4 years ago

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