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Phoenix [80]
3 years ago
7

Please help I am stuck!

Mathematics
1 answer:
cestrela7 [59]3 years ago
4 0

<u>Note</u>:

<u>Slope intercept form</u>: y = mx + b

<u>Standard slope form</u>: Ax + By = C

<u>Point slope form</u>: (y-y1) = m(x - x1)

m = slope.



10.

Form: Slope intercept form

Slope: 6/7

y-intercept = 1


11.

Form: Point slope form

Slope = 9

y -intercept = -13

y - 5 = 9 (x-2)

y - 5 = 9x - 18

y = 9x - 18 + 5

y = 9x - 13


12.

Form: Standard slope form


25. Sarah is correct, Katie is incorrect. Both graph have right slope -2/5, but Katie has incorrect y-intercept.



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What percent of 56 is 44.8
forsale [732]

Answer:

80%

Step-by-step explanation:

1. We assume, that the number 56 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 56, so we can write it down as 100%=56.

4. We know, that x% equals 44.8 of the output value, so we can write it down as x%=44.8.

5. Now we have two simple equations:

1) 100%=56

2) x%=44.8

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=56/44.8

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 44.8 is what percent of 56

100%/x%=56/44.8

(100/x)*x=(56/44.8)*x       - we multiply both sides of the equation by x

100=1.25*x       - we divide both sides of the equation by (1.25) to get x

100/1.25=x

80=x

x=80

now we have:

44.8 is 80% of 56

6 0
3 years ago
Read 2 more answers
Evaluate the expression for r = 4 and s = 5<br> 10 + r(s - 1) =
mariarad [96]

Answer:

26

Step-by-step explanation:

Substitute the values of r and s into the equation:

10 + r(s - 1 ) =

10 + 4(5 - 1 )

Then use Pemdas to solve the rest.

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

5 0
3 years ago
Emily estimated it would take her 40 minutes to run 3 miles. It actually took her 30 minutes. What was Emily's percent of error
Anton [14]

Answer:

C. 33.3%

Step-by-step explanation:

Estimated time = 40 minutes

Actual time = 30 minutes

Percent of error = (estimated time - actual time) / actual time × 100

= (40 minutes - 30 minutes) / 30 minutes × 100

= 10 minutes / 30 minutes × 100

= 0.3333 × 100

= 33.3%

Percent of error = 33.3%

C. 33.3%

6 0
3 years ago
A racetrack judge recorded the lap times 5 racecars and compared them to the historical average lap time of the track.which list
NNADVOKAT [17]

Answer:

A -1.1

B -0.7

C -0.57

D 0.15

E 1.3

Step-by-step explanation:

5 0
3 years ago
Write and solve an equation to find the value of the variable. 5.2, 8.3, 8.5, 7.7, 7.8, y; mean = 7.1
Nataliya [291]
Mean of a set of numbers is the quotient when their sum is divided by the number of items in the set. For the given above, their sum (S) is, 
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The mean (m) is calculated through the formula, 
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Therefore, y is equal to 5.1.
5 0
4 years ago
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