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ipn [44]
2 years ago
10

What % could i make 2/5 of a hour? like 10% of a hour. like that.

Mathematics
1 answer:
yarga [219]2 years ago
7 0

well, we can say that 1 hour is 100%, what is 2/5 hr off of it in percentage?

\begin{array}{ccll} hour&\%\\ \cline{1-2} 1 & 100\\ \frac{2}{5}& x \end{array} \implies \cfrac{1}{~~ \frac{2}{5}~~}=\cfrac{100}{x}\implies \cfrac{5}{2}=\cfrac{100}{x} \\\\\\ 5x=200\implies x=\cfrac{200}{5}\implies x=40

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Alex787 [66]

Answer:

1. Intersecting

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3 years ago
The function f(x) is to be graphed on a coordinate plane.
gregori [183]

Answer:

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2 years ago
Triangle P Q R is shown. The length of P Q is 17, the length of Q R is 15, and the length of P R is 14. Law of cosines: a2 = b2
Maksim231197 [3]

Answer:

P = 57°

Step-by-step explanation:

Given the following :

PQ = 17

QR = 15

PR = 14

Using the cosine formula since the length of the three sides are given:

a2 = b2 + c2 – 2bccos(A)

To find P:

QR^2 = PQ^2 + PR^2 – 2(PQ)(PR)cos(P)

15^2 = 17^2 + 14^2 – 2(17)(14)cos(P)

225 = 289 + 196 - 476 cosP

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CosP = 0.5462184

P = Cos^-1(0.5462184)

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8 0
3 years ago
If x=-6, which inequality is true ??<br>​
Gelneren [198K]

<em>Answer:</em>

The inequality that is true is -5 - 3x > 10.

<em>Step-by-step explanation:</em>

if x = -6

we can subtitution x to every inequality, so :

-5 - 3x > 10

-5 - 3(-6) > 10

-5 - (-18) > 10

-5 + 18 > 10

13 > 10 [true]

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-3 - (-30) < -14

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27 < -14 [false]

2 - x < -3

2 - (-6) < -3

2 + 6 < -3

8 < -3 [false]

So if x=-6, inequality true is -5 - 3x > 10.

<em>If this was helpful, please mark brainliest. Have a beautiful day. </em>

4 0
3 years ago
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REY [17]

Answer:

4 days

Step-by-step explanation:

6 divided by 3= 2 liters per day

2,4,6,8

I hope it is right

5 0
3 years ago
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