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3 years ago

10x -15x + 5= -45 + 20

Mathematics

1 answer:

denpristay [2]3 years ago

4 0

Answer:

x=6

Step-by-step explanation:

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If x=3 and y=5, what is the value of:<br><br>1. 4x-2y<br><br>2. 2x^2+3y^2

denpristay [2]

Answer:

1. -2

2. 21^2

Step-by-step explanation:

3 0

3 years ago

1. 5 + 2x - 8

denpristay [2]

Answer:

1. 2x-3

2.-4x+12

3.9x+3

4.-15x-12

5.2x-5

6.-11x

7.23x+42

8.-21x

9.-2x-12

10.4x-8

Step-by-step explanation:

7 0

3 years ago

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

I dont know how to do this will someone help me

Anarel [89]

Answer: A

Step-by-step explanation:

The change in the y coordinates is 0, but the change in the x coordinates is 8.

4 0

3 years ago

Help please thank you.

enot [183]

Answer:

h=a/b and the sencond one is 5ft

Step-by-step explanation:

1. isolate the varibles by dividing each side by factors that dont conatin the varible.

2. do 45 divied by 9.

7 0

3 years ago