What’s an equivalent expression to 4(4a+5)

Mathematics

1 answer:

diamong [38]3 years ago

8 0

Answer:

16a+20

Step-by-step explanation:

Use the distribute property. We can turn 4(4a+5) to (4*4a)+(4*5). From this we get 16a+20.

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What percent is equal to the decimal 0.13? A. 0.013% B. 1.3% C. 13% D. 130%

mario62 [17]

0.13 <== the decimal is in the tenth place.

We could also say it is equal to

13/100

Or,

"C" 13%

I hope this helps!
~kaikers

3 0

3 years ago

Read 2 more answers

Helen had $330 in her savings account when Vince opened a savings account with zero dollars.

Nastasia [14]

I think the answer is 30x+330>50x

Step-by-step explanation:

for the option A it was slightly changed,

cause the $30 was deposited by helen not Vince.

so check that well

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3 years ago

Help binomial distributions

Ymorist [56]

We have the formula to compute the probability of having exactly k successed over n trials, given a probability p of success (and implicitly a probability 1-p of failure), which is

$P(\text{k successed on n trials}) = \binom{n}{k}p^k(1-p)^{n-k}$

Now, the probability of at least 3 successes is the union of the following event: exactly three successes,exactly four successes and exactly five successes.

We can compute their probability and sum them: $\binom{5}{3}\left(\frac{3}{7}\right)^3\left(\frac{4}{7}\right)^2 + \binom{5}{4}\left(\frac{3}{7}\right)^4\left(\frac{4}{7}\right)^1 + \binom{5}{5}\left(\frac{3}{7}\right)^5 \approx 0.36788$