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hichkok12 [17]
3 years ago
12

To discourage guessing on the multiple-choice exam a professor assigned 4 points for a correct answer, -4 points for an incorrec

t answer, and -1 for leaving the question blank. what is the score for a student who had 15 correct answers, had 5 incorrect answers, and left 5 questions Blank?
Mathematics
2 answers:
Zanzabum3 years ago
8 0

Answer:

35

Step-by-step explanation:

4 x 15 = 60

-4 x 5 = - 20

-1 x 5 = -5

60 - 20 - 5 = 35

ki77a [65]3 years ago
7 0

Answer:

The Student would make a 45.

Step-by-step explanation:

So, 1st, you multiply 15x4, that would = 60. so then you would multiply 5x4, that would equal 20. So, you will subtract 20 from 60, and you will get 40. 5x1=5, so then you will add 5+40, and get 45!!

Hope this helps!!! (:

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Josiah traveled 79.5 miles on 3 gallons of gasoline. At this rate, how many gallons of gasoline would he need to travel 265 mile
BigorU [14]
Josiah would need 10 gallons to travel 265 miles.

First we divide 79.5 by 3 to find out how many gallons are needed for one mile.

79.5/3=26.5

For one mile we need 26.5 gallons of gas.

Now we will divide 265 by 26.5 to find the answer to the problem.

265/26.5=10

Josiah will need 10 gallons of gas to travel 265 miles
7 0
2 years ago
Read 2 more answers
1. Do you the following side lengths form a right triangle?2. Which measurement is closest to the value of X in centimeters?
koban [17]

Answer:

Part 1:

Yes, the side lengths form a right triangle.

Part 2:

Option d 37.1 cm

Explanation:

We need to use the pythagorean theorem.

In part 1, if the 3 side lengths are a right triangle, then, they must verify:

7.5^2=4.5^2+6^2

By the theorem. Then:

\begin{gathered} 7.5^2=56.25 \\ 4.5^2+6^2=20.25+36=56.25 \end{gathered}

They're equal, then the lengths correspond to a right triangle.

For part 2, we need to use again the theorem. In this case:

\begin{gathered} 12^2+x^2=39^2 \\ x=\sqrt{1521-144} \\ x=\sqrt{1377} \\ x\approx37.1cm \end{gathered}

6 0
1 year ago
What is suface area of a cone with 16in radius and 38in hight?
tresset_1 [31]
2876.74665 in


After the in you got to put a number 2 above it I don't know how to make the symbol.
7 0
3 years ago
Need help on this<br><br> Z+4&gt;2z
snow_lady [41]

Answer: z < 4

z+4 > 2z

z+4-z > 2z-z ..... Subtract z from both sides

4 > z

z < 4

So the solution set for z is any number that is less than 4, which could be something like z = 2 or z = 3.

7 0
2 years ago
Ok now that the image works did I do this right?
Arturiano [62]
Yess!! That’s how u do it && continue to work hard!
7 0
3 years ago
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