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marin [14]
3 years ago
5

QUESTION 4

Mathematics
1 answer:
vesna_86 [32]3 years ago
5 0

Answer:

f(3) =-8

Step-by-step explanation:

Given

f(x) = 2x + 5; x

f(x) =-3x + 1; x >1

Required

Determine f(3)

f(3) implies that x = 3.

We make use of

f(x) =-3x + 1

Because x >1 (i.e. 3 > 1)

Substitute 3 for x in f(x) =-3x + 1

f(3) =-3*3 + 1

f(3) =-9 + 1

f(3) =-8

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3 0
3 years ago
Multiply. use the gcf. 3/4 7/9
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21/36.

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3 years ago
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6 0
3 years ago
Read 2 more answers
In a survey of adults who follow more than one sport, 30% listed football as their favorite sport. You survey 15 adults who foll
maxonik [38]

Answer: 0.5

Step-by-step explanation:

Binomial probability formula :-

P(x)=^nC_x\ p^x(q)^{n-x}, where P(x) is the probability of getting success in x trials , n is the total trials and p is the probability of getting success in each trial.

Given : The probability that the adults follow more than one game = 0.30

Then , q= 1-p = 1-0.30=0.70

The number of adults surveyed : n= 15

Let X be represents the adults who follow more than one sport.

Then , the probability that fewer than 4 of them will say that football is their favorite sport,

P(X\leq4)=P(x=0)+P(x=1)+P(x=2)+P(x=3)+P(x=4)\\\\=^{15}C_{0}\ (0.30)^0(0.70)^{15}+^{15}C_{1}\ (0.30)^1(0.70)^{14}+^{15}C_{2}\ (0.30)^2(0.70)^{13}+^{15}C_{3}\ (0.30)^3(0.70)^{12}+^{15}C_{4}\ (0.30)^4(0.70)^{11}\\\\=(0.30)^0(0.70)^{15}+15(0.30)^1(0.70)^{14}+105(0.30)^2(0.70)^{13}+455(0.30)^3(0.70)^{12}+1365(0.30)^4(0.70)^{11}\\\\=0.515491059227\approx0.5

Hence, the probability rounded to the nearest tenth that fewer than 4 of them will say that football is their favorite sport =0.5

4 0
3 years ago
8+ -5w = -37 pls i need help
prisoha [69]
The answer to your question would be w=9
8 0
3 years ago
Read 2 more answers
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