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vichka [17]
3 years ago
14

A student started out poorly on his first mathematics test. However, he doubled his score on each of the next two tests. The thi

rd test grade was 100. What was the student’s average test grade? Round to the nearest tenth.
Mathematics
1 answer:
dsp733 years ago
6 0
His score is 50

How to:
First test grade:0
Second test grade:50
Third test grade: 100
Add all three and divide by 3
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What is greater than 100 inches or 3 yards and one of the
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To compare units either of them have to change to be the same unit

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marshall27 [118]

Answer:

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Step-by-step explanation:

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3 years ago
A secant and a tangent to a circle intersect in a 42-degree angle. The two arcs of the circle intercepted by the secant and the
Amanda [17]

Answer:

The measure of the third arc is 150\°

Step-by-step  explanation:

step 1

we know that

The measurement of the external angle is the semi-difference of the arcs which comprises

in this problem

Let

x----> the greater arc of the circle intercepted by the secant and the tangent

y----> the smaller arc of the circle intercepted by the secant and the tangent

42\°=\frac{1}{2}(x-y)

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\frac{x}{y}=\frac{7}{3}

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Substitute equation B in equation A and solve for y

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84\°=(\frac{4}{3}y)

y=3*84\°/4=63\°

Find the value of x

x=\frac{7}{3}(63\°)=147\°

step 2

Find the measure of the third arc

Let

z------> the measure of the third arc

we know that

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substitute the values and solve for z

147\°+63\°+z=360\°

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3 0
3 years ago
Find missing angles and variables
shutvik [7]

Answer:

e= 2x-4  

Step-by-step explanation:

the opposite of e is 2x-4.

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