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zaharov [31]
3 years ago
7

ariel has test scores of 90, 74, 82, and 90. The next test is the final exam, which counts as two tests. what score does the stu

dent need on the final exam to produce an average score of 90?
Mathematics
1 answer:
yawa3891 [41]3 years ago
7 0

Answer:116

Step-by-step explanation:

(90+74+82+90+x)/5=90

x=450-(90+74+82+90)

x=116

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Write the equation of a line perpendicular to 5x−9y=−8 that passes through the point ​(−5​,8​).
Fantom [35]

Answer:  y = -(9/5)x - 1

Step-by-step explanation:

Rewrite the equation in standard form:  y = (5/9)x+(8/9).  [y=mx+b]

A line perpendicular to this would have a slope that is the negative inverse of the original slope (5/9), which would make it -(9/5).  The y-intercept would also change, but we don't know the value, yet.  For now, we'll use "b" for the y-intercept.  This results in a perpendicular line:

y = -(9/5)x + b

We can calculate b, the y-intercept, by using the point (-5,8) and solving for b.

8 = -(9/5)*(-5) + b

8 = (9) + b

b = -1

The line perpendicular to 5x−9y=−8 that passes through the point ​(−5​,8​) is

y = -(9/5)x - 1

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3 years ago
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Answer:

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Step-by-step explanation:

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Which statements are true about the place values in the number 88.888? Choose all answers that are correct. A. The 8 in the hund
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<span>Answers:
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muminat
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3/8 times 3 equals 9/8 which is also 1 1/8. If you multiply 3/4 by two (numerator and denominator) then you will get 6/8. And if you multiply 9/8( I just find it easier with 9/8) by 6 you will get 54/8. And the grain will last for 6.75 days.

I may be wrong let me know.
Hope this helps!
5 0
3 years ago
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