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dexar [7]
3 years ago
5

4. A student earned an 80% on a math test. If she got 16 questions correct, how many problems were on the test? A. 13 questions

B. 18 questions C. 20 questions D. 22 questions​
Mathematics
2 answers:
choli [55]3 years ago
7 0

Answer:

20 questions on the test so C

Step-by-step explanation:

grandymaker [24]3 years ago
5 0

Answer:

20

Step-by-step explanation:

16*100/80

1600/80=20

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Jerry is a judge. he hears 5 cases every 2 3/8 hours how many cases does he haer per hour
vampirchik [111]

Answer:

2 2/19

Step-by-step explanation:

5 cases in 2 3/8 hours

The unit rate of cases per hour is calculated by dividing the number of cases by the number of hours.

5/(2 3/8) = 5/(19/8) = 5 * 8/19 = 40/19 = 2 2/19

7 0
3 years ago
Read 2 more answers
You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much
Anon25 [30]

First add the prices of the original books.

2.5+4.95+6=11.45

Find 20% of 11.45

=2.29

Therefore I saved $2.29

8 0
3 years ago
Which line has the equation 2x - 3y = 6?<br> (Please explain how you got your answer)
notsponge [240]
First, isolate y:
2x - 3y = 6
-3y = -2x + 6
3y = 2x - 6
y = 2/3x - 2
That means that the line passes through the point (0, -2) and has a positive slope of 2/3. So it would be choice A because the line in choice A passes through the point (1, -2) and has a positive slope. Choice D also passes through the point (0, -2) but has a negative slope so it cannot be the correct answer.
Choice A is correct.
3 0
3 years ago
U(x)=x-1<br> W(x)=2x^2-2<br><br> (U.w)(1)=<br> (W•u)(1)=
Kryger [21]

Answer: I really don’t know lol

Step-by-step explanation:

8 0
3 years ago
P P,Q and R can finish a task in 8, 10 and 12 hours respectivly.They started working together but after 3 hours, P and R left. H
zimovet [89]

Answer:

45 minutes

Step-by-step explanation:

Assume task completed in total x hours

\frac{x}{10} + \frac{3}{8} + \frac{3}{12} = 1 \\ 12x + 45 + 30 = 120 \\ 12x = 45 \\ x = \frac{15}{4} = 3 \frac{3}{4}

So q will take 45 more minutes

7 0
3 years ago
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