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postnew [5]
3 years ago
12

Caleb started with 50 bacteria for his science experiment and they doubled in one day. Jenna also started with 50 bacteria for h

er experiment and after one day, her number of bacteria was equal to 50 to the second power. Choose the statement that is true for the number of bacteria after one day.
A Caleb's experiment had 100 bacteria and Jenna's experiment had 250 bacteria.



B Caleb's experiment had 100 bacteria and Jenna's experiment had 2,500 bacteria.



C Caleb's experiment had 500 bacteria and Jenna's experiment had 500 bacteria.



D Caleb's experiment had 250 bacteria and Jenna's experiment had 500 bacteria.
Mathematics
1 answer:
MrRa [10]3 years ago
4 0

Answer: B

Step-by-step explanation:

The second power basically means that you multiply the number by itself that many times depending on the power, and since it's 50^2, the answer is Caleb - 100 | Jenna - 2,500. (Tip: Just multiply 50 x 50)

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Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.

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2 years ago
Evaluate: cos ω, if tan ω = - 4/3 and sin ω > 0
polet [3.4K]

Answer:

-3/5

Step-by-step explanation:

tan = opp/adj using pathagorean the hypt is 5

cos = 3/5

tan is negative in quad 2 and 4

sin is positive in quad 1 and 2

so because tan is negative and sine is positive the cosine is negative

-3/5

6 0
3 years ago
The data set below shows the number of points scored by a basketball team for each of nine games. If the mean of the data is 83
valentinak56 [21]

Answer:

The scores within one standard deviation of the mean are: 77, 79, 80, 83, 87, 88

Step-by-step explanation:

The mean of the data is 83 and the standard deviation is 6.5, find scores within 1 standard deviation of the mean:

Between

83 - 6.5 = 76.5

83 + 6.5 = 89.5

So:

The scores within one standard deviation of the mean are: 77, 79, 80, 83, 87, 88

7 0
3 years ago
The end behaviour for the polynomial function h(x)=−x3+x4−2x+1 h ( x ) = - x 3 + x 4 - 2 x + 1 is: x→−[infinity], y→−[infinity]
Goryan [66]

Answer:

\text{As  } x \to \infty, y  \to \infty,$and as  x \to -\infty, y  \to \infty

Step-by-step explanation:

Given the polynomial function: h(x)=-x^3+x^4-2x+1

To examine its end behavior, we create a table of values that we can then examine.

\left|\begin{array}{c|c}x&h(x)\\--&--\\-4&329\\-3&115\\-2&29\\-1&5\\0&1\\1&-1\\2&5\\3&49\\4&185\end{array}\right|

From the table, we see a repeating pattern of positive values of h(x) with h(1)=-1 being an axis of symmetry.

Therefore, as:

x \to \infty, h(x)  \to \infty\\x \to -\infty, h(x)  \to \infty

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3 years ago
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You may go the super easy way and choose 1 as the whole number and 0.28 as the decimal number. Then you'd obviously have 1\cdot 0.28=0.28

Otherwise, to be a bit more creative, you can observe that

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And since 1/25=0.04, you can also choose 7 as the integer, and 0.04 as the decimal to get

7\cdot 0.04=0.28

4 0
3 years ago
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