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Dvinal [7]
3 years ago
14

A barber cuts 3 people's hair in 35 minutes. Each haircut takes at least 10 minutes, and fhe first haircut takes the most time.

List one way the barber could cut 3 people's hair given this information.
Mathematics
2 answers:
Ierofanga [76]3 years ago
7 0
I think every hair cut except the first 1 was 10 minutes then the first one was 15 minutes
olchik [2.2K]3 years ago
5 0
15 minutes, 10 minutes, 10 minutes? I think so
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In-s [12.5K]
You use lots and lots of math.

5 0
3 years ago
In the figure below, find the value of cose:
MariettaO [177]

Answer:

D

Step-by-step explanation:

cosΘ = \frac{adjacent}{hypotenuse} = \frac{x}{r}

4 0
2 years ago
A plot of grass behind a building is shown.
KATRIN_1 [288]

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62m

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3 years ago
Read 2 more answers
Mplete the solution of the equation. Find the
Alex777 [14]

Answer:

-2

Step-by-step explanation:

If x=0

-3(0)+2y=-4

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5 0
1 year ago
Prove the divisibility of the following numbers:
Brut [27]

Answer:

Step-by-step explanation:

To prove divisibility, we need to factor the divident such that one of its factors matches the divisor.

(I use the notation x|y to denote that x divides y)

(A)

75^{30}|45^{45}\cdot15^{15}\\45^{45}\cdot15^{15}=3^{45}\cdot 15^{45}\cdot 15^{15}=\\=3^{45}\cdot 15^{60}=3^{45}\cdot 15^{30}\cdot 15^{30}=3^{45}\cdot (3\cdot5)^{30}\cdot 15^{30}=\\=3^{45}\cdot 3^{30}\cdot(5\cdot 15)^{30}=3^{45}\cdot 3^{30}\cdot(75)^{30}\\\implies\\75^{30}|3^{45}\cdot 3^{30}\cdot75^{30}

(B)

72^{63}|24^{54}\cdot 54^{24}\cdot2^{10}\\24^{54}\cdot 54^{24}\cdot2^{10}=(2^{162}\cdot 3^{54})\cdot(2^{24}\cdot 3^{72}) \cdot 2^{10}\\=2^{196}\cdot 3^{126}

In this case, it is easier to also factor the divisor to primes:

72^{63}=2^{189}\cdot 3^{126}

Both of these factor must be matched in the dividend in order to prove divisibility, and that indeed turns out to be true:

2^{189}\cdot 3^{126}|2^{196}\cdot 3^{126}\implies\\2^{189}|2^{196}\,\,\mbox{and}\,\,3^{126}|3^{126}

6 0
3 years ago
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