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GuDViN [60]
3 years ago
7

On a certain quiz with 25 questions, each correct answer is scored 4 points and each incorrect answer is scored –1 point. questi

ons not answered receive no points. a student who answered 23 questions and had a total score of 82 points answered how many questions correctly? 18 19 20 21 22
Mathematics
2 answers:
Katarina [22]3 years ago
7 0

x correct answers


23 - x incorrect answers


82 = 4x + -1(23 - x) = 3x - 23


105 = 5 x


x = 105/5 = 21


21 right 2 wrong 2 unanswered


Check: 4(21) -1(2) = 84-2=82 good



Ad libitum [116K]3 years ago
6 0

Answer:

21

Step-by-step explanation:

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A triangle has an area of 54 square inches the height of the triangle is 12 inches what is the length of the base of the triangl
prohojiy [21]

Answer:

<em>The base of the triangle = 9inches</em>

Step-by-step explanation:

<u>Explanation</u>:-

The area of the triangle = \frac{1}{2} bh square units

Given area of the triangle(A) = 54 square inches

Given the height of the triangle (h) = 12 inches

now  equating     \frac{1}{2}  b h = 54

                          \frac{1}{2}  b (12)  = 54

now simplification, we get

                           6 b = 54

Dividing '6' on both sides, we get

                             b = 9

The base of the triangle = 9 inches

<u>Conclusion</u>:-

<em>The base of the triangle = 9 inches</em>

6 0
3 years ago
PLEASE HELP IM BEING TIMED
Zigmanuir [339]

Step-by-step explanation:

You have miscopied the second equation as it contains a third variable B when there isn't a B in the answers.

Please correct it for assistance

7 0
3 years ago
You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. Wh
Alexxandr [17]

Answer:

  $361,223

Step-by-step explanation:

Each year, the value is multiplied by 1+5% = 1.05. After 51 years, it has been multiplied by that factor 51 times, so is now ...

  $30,000×1.05^51 ≈ $361,223

6 0
3 years ago
8.798 round it to the nearest hundredth
FinnZ [79.3K]

Answer:

8.80

Step-by-step explanation:

When rounding up and you are stuck with nine

You can't say 8.710

Your simply add one to the number before it

8.80 that your answer

7 0
3 years ago
Tell which number you would add to
Aleonysh [2.5K]

Answer:

subtract 11 from both sides I think is what you're asking

Step-by-step explanation:

8 0
3 years ago
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