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Marysya12 [62]
3 years ago
8

Help me simplify the algebraic expression

Mathematics
1 answer:
Molodets [167]3 years ago
3 0
=2ab - 20a -5a +10 -ab - b
= ab - 25a - b + 10
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During the mayoral election,two debates were held between the candidates. The first debate lasted 1 2/3 hours.The second one was
butalik [34]

Answer:

2nd debate was 3 hours long.

Step-by-step explanation:

We have been given that during the mayoral election,two debates were held between the candidates. The first debate lasted 1 2/3 hours. The second one was 1 4/5 times as long as the first one.

Let us find the estimate of time spent on 2nd debate.

1 2/3 hours would be approximately 2 hours. 1 4/5 times would be equal to 2 times.

2*2=4

Therefore, the estimated time is less 4 hours.

To find the time spent on 2nd debate, we will multiply 1 2/3 by 1 4/5.

First of all, we will convert mixed fractions into improper fractions as:

1\frac{2}{3}=\frac{5}{3}

1\frac{4}{5}=\frac{9}{5}

Now, we will multiply both fractions as:

\frac{5}{3}\times \frac{9}{5}

\frac{1}{3}\times \frac{9}{1}

\frac{9}{3}\Rightarrow 3

Therefore, the 2nd debate was 3 hours long.

5 0
3 years ago
Ahmad wants to practice free-throws. He estimates the distance from the free-throw Line to the hoop and marks it with chalk. Ahm
const2013 [10]

Answer: 10%

Step-by-step explanation:

The difference between his estimated and actual distance is 15 - 13.5 = 1.5

The percentage of error is the difference divided by the actual value.

1.5÷15 = 0.10

Converted to a percentage, it is 10%

4 0
3 years ago
Read 2 more answers
True or false by definition a simple random sample of size n
Sophie [7]
True

I hope I helped you out
7 0
3 years ago
Geometry... <br>help me pls <br><br>​
nikklg [1K]

Answer: (-5,1)

Step-by-step explanation:

To the left 5 units turns our 0 into negative 5 (-5) and going down on the y axis by 1 is 1 instead of 2 so the new point is (-5,1)

3 0
3 years ago
Given a:b and b:c, find a:b:c. Write the ratio in simplest form. a:b=6:10 and b:c=21:33
kherson [118]

Answer:

a:b = 6:10 = 3:5 = 21:35

b:c = 21:33 = 7:11 = 35:55

a:b:c = 21:35:55

7 0
3 years ago
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