1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leona [35]
3 years ago
14

Mark got 14 problems wrong on his test. His score was 72% correct. How many problems were on the test? Please show work.

Mathematics
1 answer:
stira [4]3 years ago
7 0
Consider that 100%-72%=28% represents the percentage of wrong answers. I would think as fractions as:
if 100%  is the total number of answers and 28% are the wrong ones
as
if x is the total you have 14 wrong you can write:
\frac{100}{28} = \frac{x}{14}
x=(100/28)*14=50 questions
You might be interested in
In hopes of encouraging healthier snacks at school, Zack brought in a tray of carrot sticks and apple slices to share. The tray
Alex787 [66]

Answer:

48% were carrot sticks.

52% were apple slices.

Step-by-step explanation:

Given that:

Total number of snacks in the tray = 25

Number of carrot sticks = 12

Number of apple slices = 25 - 12 = 13

Percent of carrot sticks = \frac{Number\ of\ carrot\ sticks}{Total\ Number}*100

Percent of carrot sticks= \frac{12}{25}*100

Percent of carrot sticks = 0.48 * 100 = 48%

Percent of apple slices = \frac{13}{25}*100

Percent of apple slices = 52%

Hence,

48% were carrot sticks.

52% were apple slices.

6 0
2 years ago
Can you always show that a prediction based on theoretical probability is true by performing the event often enough? If so, expl
svetoff [14.1K]
I don't know I am just trying to get my questions answered
8 0
3 years ago
What's the answer to this 94<-2(1+6b)
tigry1 [53]

Answer:

-8 > b

Step-by-step explanation:

94<-2(1+6b)

Distribute

94<-2-12b

Add 2 to each side

94+2<-2-12b +2

96 < -12b

Divide each side by -12, remembering to flip the inequality since we divide by a negative

96/-12 > -12b/-12

-8 > b

5 0
3 years ago
Suppose that the batting averages or AVG (hits per at-bat) of all players in the AAA baseball league are normally distributed wi
bulgar [2K]

Answer:

0.1

Step-by-step explanation:

Solving using empirical rule formula

95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

Hence, the lower bound 95% =

μ - 2σ

Mean = 0.2

Standard deviation of 0.05

= μ - 2σ

= 0.2 - 2(0.05)

= 0.2 - 0.1

= 0.1

The lower bound is 0.1

6 0
2 years ago
For each sentence, write an equation.
Dafna11 [192]
A) x/6=9
Subtract 6 from both sides, x=3

B) x/-4=-3
Add 4 to both sides, x=1

C) x/-5=7
Add 5 to both sides, x=12
5 0
3 years ago
Other questions:
  • P= 4s, for s =12 im just asking
    8·1 answer
  • What is the fraction of 83% in simplest form
    12·1 answer
  • 12 stars / 30 balloons = x / 120 balloons
    13·2 answers
  • The base of a square measures 7 cm, and its height measures 6 centimeters. How tall is your area?
    8·1 answer
  • 1.55555555556 as a fraction
    10·2 answers
  • Given that the measure of ∠x is 57°, and the measure of ∠y is 51°, find the measure of ∠z.
    10·1 answer
  • You have saved 4/5 of
    14·1 answer
  • What is the slope of the graph shown below?
    11·1 answer
  • What is the area of the parallelogram? A parallelogram with base of 20 centimeters, height of 15 centimeters, and side length 21
    14·1 answer
  • 4 × (3 + 7) = (4 ×[]) + (4 ×[])
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!