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s344n2d4d5 [400]
3 years ago
9

Bruce weighs 12 pounds less than three times what Dylan weighs. Write an expression for Bruce's weight in terms of Dylan's weigh

t.
Mathematics
1 answer:
skelet666 [1.2K]3 years ago
5 0

Answer:

3d-12=b

Step-by-step explanation:

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In a high school senior class, the ratio of girls to boys is 5:3. If there are a total of 168 students
NISA [10]

Answer:

105 girls

Step-by-step explanation:

the ratio is 5:3 equal to 168. You need to multiply the ratio with 21 to make it equal

6 0
3 years ago
At home, 2 out of 5 people have access to board and technology. what percent is this?
Paha777 [63]

Answer:

0.4

Step-by-step explanation:

you just have to divide

2÷5=0.4

5 0
3 years ago
Suppose that the probability that any particle emitted by a radioactive material will penetrate a certain shield is 0.01. If 10
AnnyKZ [126]

Answer:

a)P=0.42

b) n\geq 297

Step-by-step explanation:

We have a binomial distribution, since the result of each experiment admits only two categories (success and failure) and the value of both possibilities is constant in all experiments. The probability of getting k successes in n trials is given by:

P=\begin{pmatrix}n\\ k\end{pmatrix} p^k(1-p)^{n-k}=\frac{n!}{k!(n!-k!)}p^k(1-p)^{n-k}

a) we have k=2, n=10 and p=0.01:

P=\frac{10!}{2!(10!-2!)}0.01^2(1-0.01)^{10-2}\\P=\frac{10!}{2!*8!}0.01^2(0.99)^{8}\\P=45*0.01^2(0.99)^8=0.42

b) We have, 1-(1-p)^n=P, Here P is the probability that at least one particle will penetrate the shield, this probabity has to be equal or greater than 0.95. Therefore, this will be equal to subtract from the total probability, the probability that the particles do not penetrate raised to the total number of particles.

1-0.99^n\geq 0.95\\0.99^n\leq 1-0.95\\0.99^n\leq 0.05\\n\geq 297

4 0
2 years ago
The Scatter Plots rock band played to a large crond on Wednesday,
docker41 [41]

Answer:

228 boys

Step-by-step explanation:

3:2

342:228

342/3=114

114 times 2 =228

6 0
3 years ago
Can Anyone help me with 1-8
Maksim231197 [3]
1-8=1 easy math but heres help
3 0
2 years ago
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