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Tatiana [17]
2 years ago
11

Erin washed the car 4 minutes slower than half of the amount of time it took time it took Tad to mow the lawn. In total, the two

jobs took Erin and Tad 62 minutes. The amount of minutes that the jobs took Erin (x) and Tad (y) are given with the system of equations.
A. 31
B. 29
C. 22
D. 18
Mathematics
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer:it is b

Step-by-step explanation:

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PLEASEE HELP<br><br> WILL GIVE BRAINLIEST
Irina-Kira [14]
Depth of a cube = length = height 
Volume = 10^3 = 1,000 cm^3

second part:-  answer is 6*3*4 = 72 in^3
6 0
3 years ago
Suppose a NBA basketball player has 5% chance of picking up a foul every minute he plays. What is the probability that he will p
alukav5142 [94]

Answer:

He wont foul out with probability 0.9093

Step-by-step explanation:

The total number of fools he picked is a Binomial ditribution noted by X with parameters p = 0.05 and N = 48. The mean of this random variable is μ = np = 48*0.05 = 2.4 and the variance is σ² = np(1-p) = 2.4*0.95 = 2.28, hence its standard deviation is σ = √2.28 = 1.51.

Note that, if approximate probability is asked, we could just approximate X with a Normal random variable with mean 2.4 and standard deviation 1.51 (this can be done because of the central limit theorem). We will calculate the probability manually. He wont foul out if he picks 0,1,2,3 or 4 fouls, thus

P(X \leq 4) = P(X=0)+P(X=1)+P(X=2)+P(X=3)+P(X=4) \\= 0.95^{48}+48*0.95^{47}*0.05+{48 \choose 2}*0.95^{46}*0.05^2+\\{48 \choose 3}*0.95^{45}*0.05^3+{48 \choose 4}*0.95^{44}*0.05^4 \\= 0.085+0.215+0.266+0.215+0.127 = 0.9093

As a consecuence, he wont foul out with probability 0.9093.

8 0
3 years ago
M=p-2b/2 <br> p=57.4<br> b=8.7
Nostrana [21]

Given the value of p and b in the equation ((  p-2b ) / 2 ), the value of m is 20.

<h3>What is the value of m?</h3>

Given that;

  • m = ( p-2b ) / 2
  • p = 57.4
  • b = 8.7
  • Value of m = ?

First, we substitute the value of p and b into the equation.

m = ( p-2b ) / 2

m = ( 57.4 - 2(8.7) ) / 2

m = ( 57.4 - 17.4 ) / 2

m = 40 / 2

m = 20

Given the value of p and b in the equation ((  p-2b ) / 2 ), the value of m is 20.

Learn more about equations here: brainly.com/question/14686792

#SPJ1

7 0
1 year ago
A recursive rule for a geometric sequence is a1=2; an= 4/9 an-1
Oxana [17]

A recursive rule for a geometric sequence:

a_1\\\\a_n=r\cdot a_{n-1}

---------------------------------------------------

a_1=2;\ a_n=\dfrac{4}{9}a_{n-1}\to r=\dfrac{4}{9}

---------------------------------------------------

The exciplit rule:

a_n=a_1r^{n-1}

Substitute:

a_n=2\left(\dfrac{4}{9}\right)^{n-1}=2\cdot\left(\dfrac{4}{9}\right)^n\cdot\left(\dfrac{4}{9}\right)^{-1}=2\cdot\left(\dfrac{4}{9}\right)^n\cdot\dfrac{9}{4}\\\\\boxed{a_n=\dfrac{9}{2}\cdot\left(\dfrac{4}{9}\right)^n}

3 0
3 years ago
Determine which number is a solution of the inequality. j+8 ≤ 8; 0, 1, 2
Troyanec [42]

Answer:

The solution to the inequality is 0.

7 0
2 years ago
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