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gizmo_the_mogwai [7]
3 years ago
15

The graph shows the number of boys and girls who

Mathematics
1 answer:
choli [55]3 years ago
5 0

Answer:

The answer is A

Step-by-step explanation:

Hope this helps

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David can paint a fence in ten hours. Alex can paint the same fence in eight hours. If
xxTIMURxx [149]

Answer:

40/9

Step-by-step explanation:

Use the work formula, \frac{1}{A} + \frac{1}{B} = \frac{1}{T}, where A is the amount of time it takes one person, B is the amount of time it takes another person, and T is the time it takes for them to work together.

Plug in the times for David and Alex alone:

\frac{1}{10} + \frac{1}{8} = \frac{1}{T}

Find the least common denominator, which is 40.

\frac{4}{40} + \frac{5}{40} = \frac{1}{T}

\frac{9}{40} = \frac{1}{T}

Cross multiply and solve for T:

9T = 40

T = 40/9

So, if they worked together, it would take them 40/9 hours

3 0
3 years ago
Read 2 more answers
2. Rob Incorrectly almplified the radioal expresalon. Find and correct his error.
Leona [35]

Answer:

I can't even find the rational expression

Step-by-step explanation:

Did you forget something?

3 0
2 years ago
FInd the sum of the first 20 terms of the series 3+5+7+....?
melamori03 [73]

Answer:

<em>B.) 440</em>

Explanation:

I added everything together.

3 0
2 years ago
Solve the system of linear equations.<br><br> y = x + 3<br><br> y = 2x - 2
AlekseyPX

Answer:

x=5, y=8

Step-by-step explanation:

Since both equations equal y, we can set them equal

y = x + 3

y = 2x - 2

x+3 = 2x-2

Subtract x from each side

x-x+3 = 2x-x-2

3 = x-2

Add 2 to each side

3+2= x-2+2

5 =x

Now we need to find y

y =x+3

y=5+3

y=8

5 0
3 years ago
Read 2 more answers
The attendance at two baseball games on successive nights was 74,000. The attendance on Thursday's game was 4,000 more than two-
nadezda [96]

Answer:

The answer is 53,333 rounded

Step-by-step explanation:

So you multiply 74,000 by 2/3 you get 49,333

Then you take that number and add 4,000 and you get 53,333 rounded.

6 0
3 years ago
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