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3 years ago

Need help asap!!!!!!!

Mathematics

1 answer:

Phoenix [80]3 years ago

3 0

Answer:

Step-by-step explanation:

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If f(x)=3^ x-4 what is f(- 1) ?

musickatia [10]

Answer:

1/243

Step-by-step explanation:

When you see this notation, it means plug in -1 for x in the function.

f(-1) = 3^((-1)-4)

f(-1) = 3^-5

f(-1) = 1/3^5

f(-1) = 1/243

4 0

3 years ago

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Consider a political discussion group consisting of 8 Democrats, 5 Republicans, and 5 Independents. Suppose that two group mem

Leya [2.2K]

Answer:

The probability of selecting two Independents is $\frac{10}{153}$ .

Step-by-step explanation:

From the given information it is clear that:

Democrats = 8

Republicans = 5

Independents = 5

Total number of member in the group is

$8+5+5=18$

We need to find the probability of selecting two Independents.

According to binomial distribution the total number of ways to select r items form n items is

$^{n}C_r=\frac{n!}{r!(n-r)!}$

Total number of ways to select 2 members from 18 members is

$\text{Total possible outcomes}=^{18}C_2=\frac{18!}{2!(18-2)!}=153$

Total number of ways to select 2 members from 5 Independents is

$\text{Favorable outcomes}=^{5}C_2=\frac{5!}{2!(5-2)!}=10$

The probability of selecting two Independents is

$p=\frac{\text{Favorable outcomes}}{\text{Total possible outcomes}}$

$p=\frac{10}{153}$

Therefore the probability of selecting two Independents is $\frac{10}{153}$ .

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3 years ago

Simplify the expression: (9x+10) - (3x+7)

vovikov84 [41]

19x-10x would be the answer

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3 years ago

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Step by step please<br><br> solve g+12-2(q-22)>0

soldi70 [24.7K]

I hope this helps you

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3 years ago

2(x - 3) = 4x - 1

SSSSS [86.1K]

Answer:

Hello the answer is

x= -2 1/2

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2 years ago

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