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Arte-miy333 [17]
3 years ago
7

On a multiple choice test of 86 questions, a student get 8 questions wrong. To the nearest percent, what percent of the question

s did the student solve.
Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0
The answer is 91%

(the original decimal was 90.6976 so I rounded up to 91.)
basically if the student gets 8 questions wrong, this means he got 78 questions right. if we turn this into a fraction (78/86) and then multiply if by 100 we would get a percentage
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Which graph models the function f(x) = −2(3)x?
swat32

Answer:

exponential function going through point 0, negative 2 and ending down on the right

Step-by-step explanation:

(Took the test, also seen as "Option A", this graph goes down and hits the y line at 0,-2.)

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3 years ago
Jill added 450+790+123 and 1163 .is this sum reasonable? Explain.
AlexFokin [52]

Let us manually add the given numbers.

450

790

123

____

1363 

 

Therefore we see that the correct answer 1363 which is far from what Jill got which is only 1163.

Therefore the answer is No, the sum should be 1363 (closer to 1400).

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3 years ago
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14 POINTS.
wel

Answer:

2.3 could, but not -0.25.

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6 0
3 years ago
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(29) A runner is running 10 miles per hour.
leva [86]

The conversions factors needed are 1 mile= 5280 feet and 1 hour = 3600 seconds, speed in ft/s = 14.67 ft/s  

<u>Solution: </u>

Given, A runner is running 10 miles per hour.  

We have to find what conversion factors should be used to convert 10 mi/hr to ft/s?

Now, speed of runner = 10 miles per hour.

But we need the units to be in ft / s.

Then, conversion factors are miles to feet and hours to seconds.

Now, miles to feet ⇒ 1 mile = 5280 feet.

Now, hours to seconds ⇒ 1 hour = 3600 seconds

\begin{array}{l}{\text { So,speed }=10 \frac{\text { miles }}{\text { hour }}} \\\\ {\text { speed }=10 \times \frac{1 \text { miles }}{1 \text { hour }}} \\\\ {\text { Speed }=10 \times \frac{5280 \text { feet }}{3600 \text { seconds }}} \\\\ {\text { Speed }=\frac{52800}{3600}=14.67 \mathrm{ft} / \mathrm{s}}\end{array}

Hence, the conversions needed are 1 mile = 5280 feet and 1 hour = 3600 seconds, speed in ft/s = 14.67 ft/s

6 0
3 years ago
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