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Nonamiya [84]
3 years ago
5

Please help. Don’t understand this math problem

Mathematics
1 answer:
Sonja [21]3 years ago
4 0

Answer:

-24r + 56

Step-by-step explanation:

To find the area of this rectangle we multiply width and length

8 × (-3r + 7) = -24r + 56

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-6x+6y=9 (1/2,2) please helppppp
morpeh [17]

Answer:

Not a solution.

Step-by-step explanation:

-6x + 6y = - 9\\\rule{150}{0.5}\\-6(\frac{1}{2}) + 6(2) = -9\\\\-3 + 12 = -9\\\\9 =-9

The final result is a contradiction. It is not a solution to the equation, and therefore, will not be on the line.

7 0
2 years ago
the walls of a square room need painting.Each of the four walls is 12 ft wide by 8.5 feet tall.One gallon of paint covers 75 ft.
Jobisdone [24]
First find the area of each wall. This is length*width which would be 12*8.5=102. There are four walls in the room because it’s a square so that would be 102*4=408. So the total area you need to paint is 408ft one gallon will cover 75ft so 408/75=5.44 gallons of paint.
6 0
3 years ago
Read 2 more answers
Beach towels are on sale for $1.50 off the regular price. Ms. Ortiz buys 4 beach towels on sale for a total of $33.96. Write and
Nadya [2.5K]

Answer:

9.99

Step-by-step explanation:

(33.96/4)+1.5

3 0
3 years ago
Need help with the picture
BaLLatris [955]

Answer:the y=x graph will have a slope of positive one and the y intercept would be 0. The y=-x+4 graph will have a slope of negative one ( line going down) and have a y intercept of 4

Step-by-step explanation:


5 0
3 years ago
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Standardized tests: In a particular year, the mean score on the ACT test was and the standard deviation was . The mean score on
Scorpion4ik [409]

Complete question :

Standardized tests: In a particular year, the mean score on the ACT test was 19.3 and the standard deviation was 5.3. The mean score on the SAT mathematics test was 532 and the standard deviation was 128. The distributions of both scores were approximately bell-shaped. Round the answers to at least two decimal places. Part: 0/4 Part 1 of 4 (a) Find the z-score for an ACT score of 26. The Z-score for an ACT score of 26 is

Answer:

1.26

Step-by-step explanation:

Given that:

For ACT:

Mean score, m = 19.3

Standard deviation, s = 5.3

Zscore for ACT score of 26;

Using the Zscore formula :

(x - mean) / standard deviation

x = 26

Zscore :

(26 - 19.3) / 5.3

= 6.7 / 5.3

= 1.2641509

= 1.26

6 0
3 years ago
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