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s344n2d4d5 [400]
3 years ago
12

John can wash a car in 10 minutes. Brad can wash the same car in 8 minutes. How long will it take them if they work together to

wash a car?
Mathematics
2 answers:
Ann [662]3 years ago
8 0

Answer:

9 min

Step-by-step explanation.

half of ten is 5 and half of 8 is 4 and 4 + 5 = 9

inna [77]3 years ago
4 0

Answer:

9⁄40 minute

Step-by-step explanation:

⅛ + ⅒ → 5⁄40 + 4⁄40 = 9⁄40 [Find the Least Common Denominator (LCD), which is 40]

You add these proportions together to get a "'together' time".

I am joyous to assist you anytime.

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Suppose that y varies inversely as x and that y=8 when x=3. Calculate the value of y when x= 10.
Svetach [21]

\bf \qquad \qquad \textit{inverse proportional variation} \\\\ \textit{\underline{y} varies inversely with \underline{x}} ~\hspace{6em} \stackrel{\textit{constant of variation}}{y=\cfrac{\stackrel{\downarrow }{k}}{x}~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \textit{we know that } \begin{cases} y = 8\\ x = 3 \end{cases}\implies 8=\cfrac{k}{3}\implies 24=k~\hfill \boxed{y = \cfrac{24}{x}} \\\\\\ \textit{when x = 10, what is \underline{y}?}\qquad \qquad y = \cfrac{24}{10}\implies y = \cfrac{12}{5}

3 0
3 years ago
What do the difference between the adjacent angle and opposite angle​
PtichkaEL [24]

Answer:

The difference between the adjacent angle and the opposite angle is that for the adjacent side is the side next to the reference angle, and for the opposite side is the side directly across from the reference angle.

Hope this helped!

Have a supercalifragilisticexpialidocious day!

7 0
3 years ago
How many solutions are there to the equation <br> 8x - 7 = 2 (2x + 7) - 5
igomit [66]

Answer:

x=4

Step-by-step explanation:

8x - 7 =2(2x +7) - 5

8x - 7 =4x +14 - 5

8x - 7 =4x +9

8x - 4x =9 +7

4x =16

x=16 :4

x=4

3 0
3 years ago
Read 2 more answers
Question 14 (1 point)
valina [46]

Answer:

C(x) = 25 + 2x

Step-by-step explanation:

He already has 25 cards.

He is collecting 2 cards per month. In x months, he will have collected:

2 * x = 2x cards

That means that the number of cards he will have after x months will be the sum of the cards he already has and the cards he collects per month:

C(x) = 25 + 2x

8 0
3 years ago
First to answer will be the brainliest I need the answer ASAP
maks197457 [2]
It’s an adjacent angle.
5 0
3 years ago
Read 2 more answers
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