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2 years ago

Please answer the following questions only 5. 7. 8. 10. 11. and 12.

Mathematics

1 answer:

mojhsa [17]2 years ago

5 0

5) -20b+15

7) -30+9n

8)-48a+36

$10) -{55}{24} n -\frac{185}{24}$

$11) - \frac{15}{15} n + \frac{9}{15}$

$12) - \frac{1}{3} n + \frac{25}{21}$

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Please help 100 points!!! :) Who ever answers right first get's brainliest!!! :)

igomit [66]

Answer:

1/7

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2 years ago

What is a formula for the nth term of the given sequence? 15, 24, 33

KatRina [158]

Answer:

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2 years ago

Find the value of x^2 + 1 divided by x^2 if x-1 divided by x =5

MrRa [10]

Answer:

x^2+1/x^2

(x+1/x)^2 = x^2+1/x^2 +2

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Step-by-step explanation:

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3 years ago

Six sophomores and 14 freshmen are competing for two alternate positions on the debate team. Which expression represents the pro

Elanso [62]

Answer:

Choose the first alternative

$\displaystyle P=\frac{_{1}^{6}\textrm{C}\ _{1}^{5}\textrm{C}}{_{2}^{20}\textrm{C}}$

Step-by-step explanation:

Probabilities

The requested probability can be computed as the ratio between the number of ways to choose two sophomores in alternate positions $(N_s)$ and the total number of possible choices $(N_t)$ , i.e.

$\displaystyle P=\frac{N_s}{N_t}$

There are 6 sophomores and 14 freshmen to choose from each separate set. There are 20 students in total

We'll assume the positions of the selections are NOT significative, i.e. student A/student B is the same as student B/student A.

To choose 2 sophomores out of the 6 available, the first position has 6 elements to choose from, the second has now only 5

$_{1}^{6}\textrm{C}\ _{1}^{5}\textrm{C} \text{ ways to do it}$

The total number of possible choices is

$_{2}^{20}\textrm{C} \text{ ways to do it}$

The probability is then

$\boxed{\displaystyle P=\frac{_{1}^{6}\textrm{C}\ _{1}^{5}\textrm{C}}{_{2}^{20}\textrm{C}}}$

Choose the first alternative

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2 years ago

Read 2 more answers

Help if u know it please!!!

Ulleksa [173]

Mean: add all the numbers, then dived the sum by hwo many numbers there are.
72.3 + 74.5 + 81.1 + 72.3 + 75.6 + 79 = 754.8
754.8 ÷ 6 = 75.8
Mean = 75.8°

Median: Put all the number in order from lowest to highest. The middle number is the median. If there are two numbers in the middle, add them then divide the sum by 2.
72.3, 72.3, 74.5, 75.6, 79, 81.1
74.5 + 75.6 = 150.1
150.1 ÷ 2 = 75.05 ~ 75
Median = 75°

5 0

2 years ago