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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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The magnitude of the second atom relative to the first = 10⁻¹¹ / 10⁻¹³ = 100

<h3>Equation</h3>

An equation is an expression used to show the relationship between two or more variables or numbers.

The magnitude of the second atom relative to the first = magnitude of second atom / magnitude of first atom

The magnitude of the second atom relative to the first = 10⁻¹¹ / 10⁻¹³ = 100

Find out more on Equation at: brainly.com/question/13763238

8 0
2 years ago
An antelope can run a speed of 61 miles per hour. What is this speed in yards per second? Round to the nearest hundredth
DochEvi [55]

Answer:

= 29.82 yards/second

Step-by-step explanation:

The speed is given in the problem.  We just need to convert its units.  The multiplicative identity (that is, 1) may be used to change the units without changing the value.  (note:  do you know what the additive identity is?)

     61 miles per hour

    (61 miles) / (1 hour)

   (61 miles)/(1 hour)*1

   ((61 miles)/(1 hour))*((5280 feet)/(1 mile))

   ((61 miles)/(1 hour))*((5280 feet)/(1 mile))*((1 yard)/(3 feet))*((1 hour)/(60 minutes))*((1 minute)/(60 seconds))

      note:  miles, feet, hours, minutes cancel out; leaving yards per second

    (61/1)*(5280/1)*(1/3)*(1/60)*(1/60)   yards/second          (note: I write that way to paste into Excel)

8 0
3 years ago
Can anyone plz help me with this problem im a little stuck on it...
Greeley [361]

Answer:

18

Step-by-step explanation:

3×6 = 18

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ÷)

6 0
4 years ago
I. Label the parts
Arlecino [84]

Step-by-step explanation:

Question number 1 The part is 23 and the whole is 35 and the percent is 66%.

Question number 2 is The part is 20 and the whole is 32 and the percent is 62.5%.

Question number 3 is 41 is 82% of 50.

Question number 4 is 3 is 6%of 18.

Question number 5 is 14 is 28% of 50.

8 0
3 years ago
Read 2 more answers
1. Given: Angle 2 is 65 degrees. Please note that L || M. (a) What is the angle measurement of Angle 4? Explain the angle relati
Natali5045456 [20]

The measure of ∠4, ∠3 and ∠7 are 115°, 65° and 65° respectively.

<h3>Equation</h3>

An equation is an expression used to show the relationship between two or more numbers and variables.

From the diagram:

∠2 + ∠4 = 180° (sum of angles in a straight line)

∠4 + 65 = 180

∠4 = 115°

b) ∠2 = ∠3 (vertically opposite angles)

∠3 = 65°

c) ∠3 = ∠7 (corresponding angles)

∠7 = 65°

The measure of ∠4, ∠3 and ∠7 are 115°, 65° and 65° respectively.

Find out more on Equation at: brainly.com/question/18831322

4 0
2 years ago
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