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3 years ago

PLEASEEEEEE HELP!!

Mathematics

1 answer:

elena-s [515]3 years ago

3 0

Answer:

ya 5x is the right anwser

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Shelly is 3 years older than Michelle. 4 years ago the sum of their ages was 67. find the age of each person now

Murljashka [212]

If Shelly is 3 years older than Michael and There 67. Michael is 64 and Shelly is 67. Or Michael is 67 and Shelly is 70.

Hope I helped. Have a wonderful day

3 0

3 years ago

Mackenzie practices the piano 609 minutes in 3 weeks. At what rate did she practice, in minutes per day?

Step2247 [10]

Answer:

the answer is 29

Step-by-step explanation:

good luck! <33

6 0

3 years ago

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= 21229 = 72112 = 18284 ⚫️ = ?

lidiya [134]

do you mean by this

6 0

3 years ago

You are competing in a race. The table shows the times from last year's race. You want your time to be last year's median time w

olasank [31]

Answer:

28 ≤ x ≤40

Step-by-step explanation:

Arrange the data from the smallest to the largest

26, 27, 28,32, 32, 33, 35, 36, 38, 40,42,48

Identify the median value

26, 27, 28,32, 32, 33, 35, 36, 38, 40,42,48

Getting the median

(33+35)/2 = 68/2 = 34 minutes

You want your time to be last year's median time with an absolute deviation of at most 6 minutes

This mean ±6 minutes, hence this will be 34 ± 6

34+6=40 and 34-6=28

The inequality will be 28 ≤ x ≤40

7 0

3 years ago

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Help plzzzz! pre calc question

Mumz [18]

Answer:

$\sum^{\infty}_0 {(-3)^n}$

Step-by-step explanation:

Notice that the series: 1 - 3 + 9 - 27 +... clearly has powers of the factor 3 in its terms and it is also an alternate series (the terms alternate from positive to negative). The terms are positive for $a_0, a_2, a_4, ...$ (even terms) , while the odd terms $a_1, a_3, a_5, ...$ are negative. (so most likely there should be a factor (-1) in the common ratio.

We can then represent it with the following summation expression:

$\sum^{\infty}_0 {(-3)^n}$ given that each of its first four terms are:

$a_0=(-3)^0=1\\a_1=(-3)^1=-3\\a_2=(-3)^2=(-3)*(-3)=9\\a_3=(-3)^3=(-3)*(-3)*(-3)=-27$

7 0

3 years ago