MATHEMATICS HIGH SCHOOL

8-9x-6-5x=4 can you please help me with this :)

Answers

Answer 1

Answer:

Answer:

-1/7

Step-by-step explanation:

8 - 9x -6-5x =4

2-14x = 4

-14x = 2

x = -1/7

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1. Write a ratio and a percent for the shaded area.a 4x4 grid with 5 blocks shaded (1 point) one over five, 25% five sixteenths, 31.25% one over four, 20% one over four, 25% 2. Model 32% on a 5 × 5 grid. (1 point) a 5 by 5 grid has 8 cells shaded. a 5 by 5 grid has 6 cells shaded. a 5 by 5 grid has 7 cells shaded. a 5 by 5 grid has 20 cells shaded. 3. Write the ratio as a percent. In a car dealership’s lot, StartFraction 6 Over 24 EndFraction of the cars are silver. (1 point)
0.2 0.25 0.26 0.28 4. Write the decimal as a percent. 0.09 (1 point) 0.9 0.09 0.009 0.0009 5. Write the percent as a decimal. 37.1% (1 point) 0.371 3.71 37.1 371 6. Order from least to greatest. 0.4, four-ninths, 40.5%, eleven-twenty-fifths (1 point) 0.4, four-ninths, 40.5%, eleven-twenty-fifths four-ninths, 40.5%, eleven-twenty-fifths, 0.4 0.4, 40.5%, eleven-twenty-fifths, four-ninths four-ninths, 0.4, 40.5%, eleven-twenty-fifths 7. In a candy bar, 165 calories are from sugar. There are 250 calories in the candy bar. What percent of the calories are from sugar? (1 point)
58 82 60 66 For questions 8 and 9, write the fraction as a percent. If necessary, round to the nearest tenth of a percent.
8. 9/15 (1 point) 0.481 0.604 0.483 0.6 9. Write the fraction as a percent. If necessary, round to the nearest tenth of a percent.
4one fifth (1 point) 0.041 4.2 0.42 0.042 10. Write the percent as a decimal and as a fraction.
215% (1 point) 2.15; 21/20 2.15; 23/20 21.5; 211/2 21.5; 213/10 11. The science club sold 25 T-shirts last week and 18 T-shirts this week. What is the percentage of decrease in the number of T-shirts sold? (1 point)
0.72 0.28 0.39 0.36 12. On a factory floor, 20 of every 170 toy robots are defective. What percent of the toy robots are defective? Round your answer to the nearest hundredth. (1 point)
0.3434 0.0176 0.1176 0.0341 13. A new law requires that 12% of an individual’s income be invested in the stock market. Your accounts show that you need to put $420 in the stock market this year. How much did you earn this year? (1 point)
5040 350 504 3500 14. 20% of what number is 47? (1 point) 236.5 235 232 237.5 15. Estimate a 15% tip for a meal that cost $26.80. (1 point)
1.35 2.7 4.05 31.05 16. You and some friends rent a limousine for a formal reception. The bill for the evening is $53.00. A tax of 6% will be added to your total, and you want to tip the chauffeur for his excellent driving. You decide to leave him a tip that is 20% of the bill before tax is added. How much will be paid in total? (1 point)
63.6 66.78 13.78 10.6 17. Find the percent of markup. Round to the nearest tenth.
$37.00 to $49.00 (1 point) 0.245 0.324 0.277 0.12 FinishCancel

Answers

Here are the answers to the following questions:

1. Write a ratio and a percent for the shaded area.
a 4x4 grid with 5 blocks shaded (1 point)
five sixteenths

2. Model 32% on a 5 × 5 grid. (1 point)
a 5 by 5 grid has 8 cells shaded.

3. Write the ratio as a percent. In a car dealership’s lot, 6 Over 24 EndFraction of the cars are silver. (1 point)
0.25

4. Write the decimal as a percent. 0.09 (1 point) 0.0009

5. Write the percent as a decimal. 37.1% (1 point) 0.371

6. Order from least to greatest. 0.4, four-ninths, 40.5%, eleven-twenty-fifths
0.4, 0.44, 0.405, 0.44
(1 point)
0.4, 40.5%, four-ninths, eleven-twenty-fifths

7. In a candy bar, 165 calories are from sugar. There are 250 calories in the candy bar. What percent of the calories are from sugar? (1 point)
66

For questions 8 and 9, write the fraction as a percent. If necessary, round to the nearest tenth of a percent.

8. 9/15 (1 point) 0.6

9. Write the fraction as a percent. If necessary, round to the nearest tenth of a percent.
4 one fifth (1 point) 0.042

10. Write the percent as a decimal and as a fraction.
215% (1 point) 21.5; 211/2

11. The science club sold 25 T-shirts last week and 18 T-shirts this week. What is the percentage of decrease in the number of T-shirts sold? (1 point)
0.28

12. On a factory floor, 20 of every 170 toy robots are defective. What percent of the toy robots are defective? Round your answer to the nearest hundredth. (1 point)
0.1176

13. A new law requires that 12% of an individual’s income be invested in the stock market. Your accounts show that you need to put $420 in the stock market this year. How much did you earn this year? (1 point)
5040

14. 20% of what number is 47? (1 point) 235

15. Estimate a 15% tip for a meal that cost $26.80. (1 point)
4.05

16. You and some friends rent a limousine for a formal reception. The bill for the evening is $53.00. A tax of 6% will be added to your total, and you want to tip the chauffeur for his excellent driving. You decide to leave him a tip that is 20% of the bill before tax is added. How much will be paid in total? (1 point)
66.78

17. Find the percent of markup. Round to the nearest tenth.
$37.00 to $49.00 (1 point) 0.245

Answer:

0.245

Step-by-step explanation:

none

Alex received two job offers. He is not sure whether he should take a job at the movie theater that's close to his house and pays $8.50 per hour, or if he should take the job at a grocery store that pays $9.00 per hour, but is a thirty-minute drive away. Use the PACED decision process to decide what Alex should do. Show each step.

Answers

PACED decision making model
P - identify the problem
A - identify the alternatives
C - determine criteria
E - evaluate alternatives
D - make a decision

Problem: What job to take?
Alternatives:
1st job: movie theater ; 8.50/hr ; near his house or walking distance
2nd job: grocery store ; 9.00/hr ; 30 minutes travel
Criteria:
travel time and travel cost
Evaluate:
1st job: walking distance, no traffic worries nor fuel expenses
2nd job: 30 minutes travel time, consider traffic, fuel expenses
Decision:
It is more practical to accept the job in the movie house. Even though it is only 8.50 per hour, travel expenses is 0 and there is no difficulty in going to work.

Answer:

Movie Theater

Step-by-step explanation:

P - identify the problem

A - identify the alternatives

C - determine criteria

E - evaluate alternatives

D - make a decision

1st job; $8.50 an hour

2nd job; $9 an hour

1st job; walking distance, no fuel or car expenses

2nd job; 30 minutes away, need to pay for a bus or gas for a car

I say he should get the job at the movie theater, its closer so he doesnt need to spend money on gas or for a way to get to the other job. It's only $.50 more for the other job but he would cost more for a way to get there.

The National Football League (NFL) polls fans to develop a rating for each football game. Each game is rated on a scale from 0 (forgettable) to 100 (memorable). The fan ratings for a random sample of 12 games follow. 57 61 87 74 72 73 19 56 81 79 83 75 a. Develop a point estimate of mean fan rating for the population of NFL games (to 2 decimals). b. Develop a point estimate of the standard deviation for the population of NFL games (to 4 decimals).

Answers

The point estimates for the mean and standard deviation of the given data is respectively; 68 and 17.6

What is point Estimate?

A) To find the point estimate of the mean, we add all up all the data and divide by the number of values.

Thus;

∑x = 57 + 61 + 86 + 87 + 72 + 73 + 19 + 56 + 81 + 79 + 83 + 75 = 816

n = 12 numbers

Thus;

mean = ∑x/n = 816/12

Mean = 68

B) To find the estimate of the standard deviation, we would get it from the formula;

s = √[(n*(∑x²) - (∑x)²)/n(n - 1)]

∑x² = 572 + 612 + 862 + ... + 742 = 59,010

s = √[ (12*(59,010) - (816)²)/(12)(11)]

s = 17.6

Read more about Point Estimate at; brainly.com/question/9562180

Compute the permutations and combinations.From a committee consisting of 5 men and 6 women, a sub-committee is formed consisting of 4 men and 3 women. How many different subcommittees are possible?

100
360
600

Answers

100

From 5 men you can form 5x4x3x2 /(4!) different committes of 4 men = 5 different committes.

From 6 women, you can form 6x5x4 / (3!) different committes of 3 women = 20 different committes.

Total combinations: 5 x 20 = 100.

Solve the proportion. 10/a =15/30
a. 2
b. 5
c. 20
d. 10

Answers

multiply the denominators by 30a.
300=15a
a=20
so the correct answer is C

Angelica is working on function machines. She has two machines g(x)=square root x-5 and h(x)= x^2-6. she wants to put them in order so that the output of the first machine becomes the input of the second. she wants to use a beginning input of 6.a) in what order must she put the machines to get a final output of 5.
b)is it possible for her to get a final output of -5? if so,show how she could do that. If not explain why not.

PLEASE HELP!

Answers

$g(h(x))=√(x^2-6-5)=√(x^2-11)\ng(h(6))=√(6^2-11)=√(36-11)=√(25)=5$

a)
$h(x)$ is the input for $g(x)$ , so $h(x)$ must be first

b)
It's impossible for $g(h(x)=√(x^2-11)$ , because its value is always non-negative for any x. Let's see what about $h(g(x))$ .

$h(g(x))=(√(x-5))^2-6=x-5-6=x-11$

The result is a non-constant linear function, so its value can be any real number, including -5. You can calculate for what x it's equal to -5.

$x-11=-5\nx=6$

$x-11=-5\nx=6$

a) To get a final output of 5 , she must first input 6 into machine h(x) , then the result from machine h(x) is input back to machine g(x).

b) It is possible to get a final output of -5. It could be done by first input 6 into machine g(x) , then the result from machine g(x) is input back to machine h(x).