Help me ASAP please

Mathematics

1 answer:

Elenna [48]3 years ago

5 0

Answer:

$\large\boxed{4^{-3}}$

Step-by-step explanation:

$4^{-5}\cdot4^2\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=4^{-5+2}=4^{-3}$

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If you drive 130 miles and it takes you Two hours and six minutes and then you drive back on the same route but it takes you two

Vilka [71]

You can gain it by taking an hr and thirty min trip and on the way back takes hr and forty five min. That is how you gain your precious time back!!!✍️☃️⚽️

4 0

3 years ago

There are 1420 students enrolled at Senn. If 60% of these students walk to school, how many students are walking to school?

pychu [463]

Answer:

852 students walking to school

Step-by-step explanation:

Lets start with a simple example so you can get it

if 60% of 100 students walk to school that means

60 students walk to school... right??

so lets simplify it more that means you have multiplied 100 (students) by 60%

or $\frac{60}{100}$ (note: you can say that 60% is equal to $\frac{60}{100}$ )

so the problem told 60% of 1420 students walk to school that means we should

do this: $1420*\frac{60}{100} = 852$

3 0

3 years ago

Read 2 more answers

A committee of 15 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis, what is the pr

Igoryamba

Answer:

0.006% probability that the final vote count is unanimous.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they vote yes, or they vote no. The probability of a person voting yes or no is independent of any other person. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$