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Sauron [17]
4 years ago
9

To determine student's final grade for a math class, Mr. Abbot throws out the lowest test score and takes the average of the rem

aining scores. Phil earned the following test scores in the class: 80, 76, 84, 91, and 95. What was Phil's final grade?
Mathematics
1 answer:
Scorpion4ik [409]4 years ago
8 0

First, eliminate the lowest grade (76).  Now, find the average/mean of the remaining 4 test grades.  To do so, add up all the test grades, then divide them by the total number of test grades:

80+84+91+95=350

350/4=87.5

Hope this helps!!

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Q bisects PR, PQ=3y, and PR=42. Find y and QR.
Vedmedyk [2.9K]
|PR| = |PQ| + |QR|; |PQ| = |QR| conclusion |PR| = 2|PQ|

|PQ| = 3y; |PR| = 42; |QR|=?

subtitute

42 = 2(3y)
6y = 42    |divide both sides by 6
y = 7

|QR| = 3(7) = 21
3 0
3 years ago
4(4x-2) + 1 =16x - 7. Solutions
Talja [164]

Answer:

4(4x - 2) + 1 = 16x - 7

16x - 8 + 1 = 16x - 7

16x - 7 = 16x - 7

-7 = -7

0 = 0

6 0
3 years ago
Which equation in slope-intercept form represents a line that is parallel to y=−4x−5 and passes through the point (0,0)?
IrinaK [193]

Answer:

\displaystyle y = -4x

Step-by-step explanation:

0 = 0 ± b

\displaystyle 0 = b \\ \\ y = -4x

* Parallel Lines have SIMILAR <em>RATE OF CHANGES</em> [<em>SLOPES</em>], so −4 remains the way it is.

I am joyous to assist you anytime.

6 0
3 years ago
A drawbridge rises at a rate of 3 2/3 feet per minute. The drawbridge rises to a height of 50 feet. How long does it take the dr
k0ka [10]

Answer: Third option.

Step-by-step explanation:

You know that the drawbridge rises at a rate of 3\ \frac{2}{3} feet per minute. This means that the drawbridge rises  3\ \frac{2}{3} in a minutes.

Convert from mixed fraction to decimal number:

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Since the drawbridge rises to a height of 50 feet, you need to apply this procedure in order to find the time the drawbridge takes to completely rise:

time=\frac{(1\ min)(50\ ft)}{3.66\ ft}=13.6\ min or 13\ \frac{7}{11}\ min

7 0
3 years ago
Read 2 more answers
Two​ high-speed ferries leave at the same time from a city to go to the same island. The first​ ferry, the​ Cat, travels at 34 m
djyliett [7]

Answer:

They will be 5 miles apart in 1 hour

Step-by-step explanation:

Here, we want to calculate the time it will take for the two ferries to be 5 miles apart

Mathematically; distance = speed * time

Let the number of hours be x

In x hours, the cat will have traveled 34 * x = 34x miles

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So;

34x - 29x = 5

5x = 5

x = 5/5

x = 1 hour

4 0
3 years ago
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