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nekit [7.7K]
3 years ago
10

Simplify the following expression. (7x3 + 8 – x2) + (5x3 – 7)

Mathematics
1 answer:
allochka39001 [22]3 years ago
5 0
Are the numbers behind the x exponents?
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Monique randomly surveyed 30 students from
Naily [24]

Answer:

522

Step-by-step explanation:

Find the percent of students in her class that have a dog or cat:

  1. Set up a proportion: \frac{18}{30} = \frac{x}{100}  
  2. Cross multiply, then divide: 18 × 100 = 1800, 1800 ÷ 30 = 60
  3. So, 60% have a dog or cat

Find 60% of the total amount of students in Monique's school:

  1. 60% of 870 = \frac{60}{100} × \frac{870}{1}  
  2. \frac{60}{100} × \frac{870}{1} = \frac{52200}{100}  
  3. \frac{52200}{100} = \frac{522}{1} = 522  

I hope this helps!

8 0
3 years ago
What is the formula for finding volume in a prism<br>​
egoroff_w [7]

Answer:

Well it’s volume formula for prism it’s V = Bh

Step-by-step explanation:

3 0
4 years ago
Chase a has locker that is 2 ft. Wide, 2 ft. Deep, and 5 ft. High. How many boxes of fundraising candy can he fit into his locke
Ronch [10]

Answer:

the aswer is 20

Step-by-step explanation:

2x2=4x5=20

i hope this helps anyone and everyone

4 0
2 years ago
Player B has 33 fewer hits than player A but has a greater batting average. Your friend concludes that Player B has more at bats
Shtirlitz [24]

Using proportions, it is found that he must have fewer at bats than Player A, as the batting average is inverse proportional to the number of at bats, hence you friend is incorrect.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

The batting average is given by the division of the number of hits by the number of at bats. Player B has fewer hits but a greater batting average, which means that he must have fewer at bats than Player A, as the batting average is inverse proportional to the number of at bats, hence you friend is incorrect.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

6 0
2 years ago
If f(x) = 5x + 40, what is f(x) when x = -5?<br> 0 -9<br> 0 -8<br> ОО
Kazeer [188]
When you move the 40 to the other side ur subtracting and so -40 - 5 is -45, after you divide -45 and 5 and get -9.
8 0
3 years ago
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