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schepotkina [342]
3 years ago
12

Derek's score on a test was 90 percent. He had 72 questions right. How many problems were on the test?

Mathematics
1 answer:
romanna [79]3 years ago
6 0

90% = 72 questions


\\Find 1%

1 % = 72 ÷ 90 = 0.8


\\Find 100%

100% = 0.8 x 100 = 80 questions


Answer: There were 80 questions

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The table and the graph below each show a different relationship between the same two variables, x and y:
olga2289 [7]

The value of y will be 60 so the correct answer is option C.

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

A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

There is a linear relationship between the two variables x and y. For the given data in the table as well as in the graph. The expression for the two variables will be written in the form of an equation as follows:-

The expression for the data in the table:-

y = 25 x now at x = 12

y = 25 x 12 = 300

The expression for the values in the graph:-

y  = 30x at x = 12

y  = 30 x 12

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How much more would the value of y be on the graph will be calculated as:-

Value  = 360 - 300

Value = 60

Therefore the value of y will be 60 so the correct answer is option C.

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5 0
2 years ago
F(x)=5x-4 g(x)=3x-7 evaluate f(g(3)
anyanavicka [17]

Answer:

g(3)=9-7=2

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4 0
3 years ago
Read 2 more answers
Write the equation in slope intercept form (y=mx+b) of a line that passes
lesya [120]

Answer:

y = -6x +13

Step-by-step explanation:

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5 0
3 years ago
The interior angles of a triangle have measures 75 degrees,(-5w+125) degrees, and (4w+85) degrees. what is the value of W?
andrew-mc [135]
The sum of the measures of the angles is 180 degrees.
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Combine like terms.
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Subtract 285 from both sides.
-w = -105
Divide both sides by -1.
w = 105
7 0
3 years ago
If x equals 6, what is the order of the angles from smallest to largest degree?
mote1985 [20]
The size of the angle is always corresponding to the opposite side to it, for example
∠A corresponds to side BC
∠C corresponds to side AB
∠B corresponds to side AC
thus given x=6 then:
AC=x^2-x/2=33
AB=x^2+x/2=39
BC=x^2+x/3=34
thus the order of angles from the smallest to the largest is ∠B, ∠A, ∠C
6 0
3 years ago
Read 2 more answers
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