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Eduardwww [97]
2 years ago
15

(7 — 2) - 10 Simplify each numerical expression

Mathematics
2 answers:
german2 years ago
5 0

Answer:

-5

Step-by-step explanation:

You have to follow PEMDAS, so we would do parentheses, and 7-2 equals 5. Then we subtract 5-10 which equals -5.

mart [117]2 years ago
4 0

Answer:

-5

Step-by-step explanation:

7−2−10

=5−10

=-5

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What is minimal completion time for the activities in the graph below? In a complete sentence, explain how you got your answer
kupik [55]
The minimal completion time for the activities is the shortest possible time for all the activities to be finished. In doing this, we look at the path that would require the greatest amount of time. At the START node, we choose the path that would take the longest which is 7 days leading to ACTIVITY D. Next, we choose the path leading to ACTIVITY B which takes 5 days. Then, we move to ACTIVITY C taking 5 days and finally, reach the END which would take 6 days. So, the minimal completion time is:
7 + 5 + 5 + 6 = 23 days
6 0
3 years ago
Ieda and Thanh both offer piano lessons. Ieda charges an initial fee of $8.50 and an hourly rate of $11.00. Thanh charges an ini
Trava [24]
The price for each instructor will be the same at 3 hours. How I determined this answer:

First off, you need to add the initial price and hourly price for each person together, so you already know how much it will cost for 1 hour, including the initial fee. Here's how you do it:

Ieda: $11.00 (hourly price) + $8.50 (initial fee) = $19.50 (for 1 hour)

Thanh: $10.50 (hourly price) + $10.00 (initial fee) = $20.50 (for 1 hour)

Now that you have the price for 1 hour including the initial fee, now you need to find the price for each hour after that. Here's how I did that:

I created a graph that looked like this:

Hours:       1                 2                  3               
Ieda:      19.50          30.50         41.50
Thanh:   20.50          31.00         41.50

Here's how I figured out the price for each hour:

Ieda:

Hour 1 (including initial price):
            $11.00 + $8.50 = $19.50
Hour 2 (excluding initial price): Only add the hourly price after Hour 1!
            $19.50 + $11.00 = $30.50 
Hour 3 (excluding initial price):
            $30.50 + $11.00 = $41.50

Thanh:

Hour 1 (including initial price):
            $10.50 + $10.00 = $20.50
Hour 2 (excluding initial price):
            $20.50 + $10.50 = $31.00
Hour 3 (excluding initial price):
            $31.00 + $10.50 = $41.50

So, looking at the graph, their prices are the same once each instruction reaches 3 hours. ($41.50)

I hope I was able to help you! :)
5 0
2 years ago
Read 2 more answers
Evaluate: ma + (t + h)
Eduardwww [97]

Answer:

Math

Step-by-step explanation:

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8 0
3 years ago
A bag contains 7 pears and 3 apples. If you select 2 pieces of fruit without looking, how many ways can you get 2 pears.
enot [183]

Answer:

There are 2 ways, since we'd chosen 2 fruits

PROBABILITY:

(\frac{2}{10} = \frac{1}{5}) or \frac{1}{10}

METHOD:

In the 2 fruits we took both of them might be pears either maybe one of them can   be a pear. The same is possible with the other fruit.

<em>PLEASE DO MARK MY ANSWER AS THE BRAINLIEST..</em>

<em><HOPE IT HELPS></em>

6 0
3 years ago
Solve for x in the diagram below.
kogti [31]

Answer:

x=75

Step-by-step explanation:

A triangle is 180° in total and the equation was (2x+30)° if you subtract 30 from 180 you get 150 if you divide that by 2 you get 75.

Answer: 2(75) + 30° =180°

4 0
3 years ago
Read 2 more answers
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