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Helga [31]
3 years ago
7

A student earned a grade of 80% on a math test that had 20 problems . How many did he get right?

Mathematics
2 answers:
JulijaS [17]3 years ago
7 0
80/100·20=8/10·20=8·2=16 (problems he got right)

<em>Answer:16</em>
shutvik [7]3 years ago
6 0
Multiply 80 and 20 and divide by 100 and get answer of 16.
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Write an equation for the nth term of the arithmetic sequence. Then find a50.
julia-pushkina [17]

Step-by-step explanation:

Since the sequence above is an arithmetic sequence

For an nth term in an arithmetic sequence

A(n) = a + ( n - 1)d

where a is the first term

n is the number of terms

d is the common difference

From the question

a = 1/3

d = 1/2 - 1/3 = 1/6 or 2/3 - 1/2 = 1/6

Substitute the values into the above formula

That's

<h3>A(n) =  \frac{1}{3}  + (n - 1) \frac{1}{6}  \\  =  \frac{1}{ 3}  -  \frac{1}{6}   +  \frac{1}{6} n</h3>

So the nth term of the sequence is

<h3>A(n) =  \frac{1}{6}  +  \frac{1}{6}n</h3>

For a50 since we are finding the 50th term

n = 50

So we have

<h3>A(50) =  \frac{1}{6}  +  \frac{1}{6} (50) \\  =  \frac{1}{6}  +  \frac{25}{3}</h3>

We have the final answer as

<h3>A(50) =  \frac{17}{2}</h3>

Hope this helps you

4 0
3 years ago
Is 33/3 a natural, whole, integer, or rational number??????
Rasek [7]
Natural, Whole, and a rational number
6 0
3 years ago
Y=1/2 x + 2 what is the slope?
dem82 [27]

Answer:

1/2

Step-by-step explanation:

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5 0
3 years ago
Find the perimeter of the polygon with the vertices A (-1,5), B (-1,-4), C (-6,-4), and D (-6,5)
ch4aika [34]

68

Schools almost over, good luck!!

5 0
3 years ago
There are three samples A, B, and C. Sample A indicates 50 successes out of 120 cases, sample B indicates 80 successes out of 12
san4es73 [151]

Answer:

Step-by-step explanation:

From given information

P_{A} = 50 /120 =  0.4166667

P_{B} = 80 /120 =  0.6666667

P_{C} =48/120 = 0.4

Ha : p > 0.4

Correct order is

Answer : C) B ,A ,C

5 0
3 years ago
Read 2 more answers
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