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Feliz [49]
3 years ago
15

I can't figure out the circumference

Mathematics
1 answer:
Reika [66]3 years ago
4 0
Multiply 9 by 3.14 and then 2, the equation is c = 2piD (circumference equals two times pi times diameter)
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Penelope is saving up to buy a new bicycle. She already has $65 and can save an
alisha [4.7K]

Answer:

she would have $85 in 4 weeks

Step-by-step explanation:

5*4=20

20+65=$85

7 0
3 years ago
Need help ASAP! Due in 25 minutes
Flauer [41]

Answer:

D, the last answer choice

Step-by-step explanation:

y=mx+b is the formula. 2/3x is the slope and 3 is the y intercept.

4 0
3 years ago
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Suppose we want to choose 5 colors, without replacement, from 8 distinct colors.1. If the order is relevant, how many can be don
Charra [1.4K]

(1) From the information given, if we want to choose 5 colors from 8 distinct colors and the order in which the selection is made is relevant, then what we have is a permutation.

The formula is given as;

nP_r=\frac{n!}{(n-r)!}

This formula means we need to select/arrange r items out of a total of n items and the anwer derived would be the total number of arrangements possible.

Therefore, we would have;

\begin{gathered} nP_r\Rightarrow_8P_5 \\ _8P_5=\frac{8!}{(8-5)!}\Rightarrow\frac{8!}{3!} \\ _8P_5=\frac{8\times7\times6\times\ldots1}{3\times2\times1}\Rightarrow\frac{40320}{6} \\ _8P_5=6720 \end{gathered}

Therefore, if the order is relevant, this selection can be done in 6,720 ways.

(2) If the order is NOT relevant, then what we need to calculate is a combination and the formula is;

_nC_r=\frac{n!}{(n-r)!r!}

The formula can now be applied as follows;

\begin{gathered} _nC_r\Rightarrow_8C_5 \\ _8C_5=\frac{8!}{(8-5)!\times5!} \\ _8C_5=\frac{8!}{3!\times5!}\Rightarrow\frac{8\times7\times6\times\ldots1}{(3\times2\times1)\times(5\times4\times\ldots1)} \\ _8C_5=\frac{40320}{6\times120} \\ _8C_5=56 \end{gathered}

If the order is not relevant, then the selection can be done in 56 ways.

3 0
1 year ago
F(x) = -x² - 7x - 5<br>Find f(-5)​
irga5000 [103]

Answer:

5

Step-by-step explanation:

f(-5)=-(-5)^2 - 7(-5) - 5

f(-5)= -25 +35 - 5

f(-5) = -25 +30

f(-5) = 5

7 0
3 years ago
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The mathematical statement 4 C A means:
shtirl [24]
The mathematical statement 4 C A means that 4 is a subset of A. The "C" symbol is generally used in mathematical statements to mean that the former is a subset of the following statement.
4 0
3 years ago
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