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Andrej [43]
2 years ago
8

I need help on this question ​

Mathematics
1 answer:
dlinn [17]2 years ago
7 0

Answer: number 3

Step-by-step explanation:

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PLS helppp I’ve been stuck on this for a while
Andre45 [30]
I’m learning this right now but the photos are blurry I can’t see it that well
3 0
3 years ago
Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it
Alexeev081 [22]
We can solve this problem by calculating the individual rate of working and equate it to their total rate of working.

If Dave can complete a sales route in 4 hours, then his working rate is

\frac{1}{4}

Also, if James can do it in 5 hours, then his working rate is

\frac{1}{5}

Let
x
be the hours that both will use to complete the sales route,

Then rate at which both completes this task is
\frac{1}{x}


Meaning if we add their individual rates we should get

\frac{1}{x}

That is;

\frac{1}{4} + \frac{1}{5} = \frac{1}{x}

The LCM is
20x

So let us multiply through with the LCM.

20x \times \frac{1}{4} + 20x \times \frac{1}{5} =20x \times \frac{1}{x}

5x + 4x = 20

We simplify to get,

9x = 20

Dividing through by 9 gives;

x = \frac{20}{9}

x = 2\frac{1}{9}

Therefore the two will complete sales route in
2 \frac{1}{9}
hours.
3 0
3 years ago
Help me with 8 through 12 please and thank you only 4 questions
Vera_Pavlovna [14]

Answer:

i can't do that I don't know how I'm sorry

5 0
3 years ago
3x − 2y = −2
Lina20 [59]

Answer: C. -3y+14

Step-by-step explanation:

3x-2y=-2\\x+3y=14

Move 3y to ther right side.

3x-2y=-2\\x=-3y+14

So the answer is C. Because x = -3y+14.

7 0
3 years ago
Read 2 more answers
Pls help due tomorrow just numbers 7 - 12
Luden [163]

Answer:

Step-by-step explanation:

7). 5.75% = \frac{5.75}{100} = \frac{575}{10000} = \frac{23}{400}

10). 16\frac{2}{3} % = \frac{50}{3} % = \frac{50}{300} = \frac{1}{6}

12). 79\frac{5}{6} % = \frac{479}{6} % = \frac{479}{600}

Now is you turn. You can do it!

8 0
3 years ago
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