Are 2m-0.2(2m) and 8(m/5) equivalent and explain

Answers

Answer 1

Answer: first you should simplify:
2m - 2/10 * 2*m = 2m - 2/5m = 10/5m - 2/5m = 8/5m
and now you can say: 8(m/5) = 8/5m
so they are equivalent :)))
i hope this is helpful
have a nice day

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Answer:

i think your question might be incomplete. the necessary part of the question seems to be missing.

At a diner, the cost of a muffin (m) and a cup of tea (t) is $2.10. The cost for two muffins and 3 cups of tea is $5.15. How much does a muffin and a cup of tea cost?

Answers

Answer:

ok so one muffin and one cup of teat cost $2.10 ok now I did guess and check and I got one muffin cost $1.15 and one cup of tea is $.95

1.15*2=2.30

.95*3=2.85

2.30+2.85=5.15

Step-by-step explanation:

Answer: ok so one muffin and one cup of teat cost $2.10 ok now I did guess and check and I got one muffin cost $1.15 and one cup of tea is $.95

Step-by-step explanation:

$.95

1.15*2=2.30

.95*3=2.85

2.30+2.85=5.15

Write 6.25 as a fraction

Answers

6.25 is equivalent to 6 and 1/4. To find the compound fraction, multiply 4, present in the denominator, and 6. Then add 1, present in the numerator. The answer should be over four. So: 4*6=24, 24+1=25, 25/4= 6.25

What is the least common multiple of 3 and 5 show your work

Answers

The least common multiple is 15 because 3 times 5 = 15

The least common multiple is 15 because that is the first number they have in common!!!!

Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are -36 and 2304, respectively.

Answers

When we find a geometric sequence using the first and second terms, what we do is divide the second by the first to find a "common ratio," the number you multiply by to get to the next term.

In this case, we only have the second and fifth terms. From the second to the fifth term, we've multiplied by that common ratio three times.
What we can do is divide the fifth by the second and then take the cube root to find our common ratio.

$2304/-36=-64\n\sqrt[3]-64=\boxed{-4}$

Now we know we're multiplying by -4 each time, let's find the first term.

The opposite of multiplying by -4 would be dividing by -4. We work back from our second term -36 to find that the first term would be 9.

For each sucessive term, we then multiply by -4.

Our equation is $a_n=9*-4^((n-1))$

Negative 7 to the second power is what? ;)

Answers

-7^2 is the same as -7 * -7, which is 49.

Answer:

Step-by-step explanation:

-7 times -7 is 49 because the negatives cancel out :)

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