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
Natalija [7]
3 years ago
14

Misty took a multiple choice test in science that had 50 questions. If the relationship between the number she got correct and t

he number she got incorrect is 7:3, and she got 9 incorrect, how many did she get correct?
Mathematics
1 answer:
Alex3 years ago
4 0
In this case, the total number of questions in the test is 50. The possible outcome for the question would be answered wrong, answered correctly or not answered. To know the amount of the correct answer, you need to multiply the incorrect with correct/incorrect ratio. The equation would be:
correct answer: 9 answer * 7/3= 21 answer.

Then for this test misty has:
9 incorrect answer
21 correct answer
20 blank/ not answered
You might be interested in
Are these correct? If not please help me write the correct answer.​
Keith_Richards [23]

Answer:

Mostly correct

For Q3, you are doing great, you remembered that negative numbers can happen if the exponent is an odd number.

For Q4, I think you were confused with the fractions,

4(i)

(\frac{2}{3} )^{4} = (\frac{2^{4}}{3^{4}}) = (\frac{16}{81}) =0.198

4(ii) is also wrong but I'll let you try to fix it yourself following what I given you for 4(i). You should get 1/64

Hope this helps!

4 0
3 years ago
Read 2 more answers
The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of 121 and standard deviation o
Wittaler [7]

Answer:

Around 0.73% of adults in the USA have stage 2 high blood pressure

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 121 and standard deviation of 16.

This means that \mu = 121, \sigma = 16

Around what percentage of adults in the USA have stage 2 high blood pressure

The proportion is 1 subtracted by the p-value of Z when X = 160. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{160 - 121}{16}

Z = 2.44

Z = 2.44 has a p-value of 0.9927.

1 - 0.9927 = 0.0073

0.0073*100% = 0.73%

Around 0.73% of adults in the USA have stage 2 high blood pressure

5 0
3 years ago
in a trivia game Joshua gets the score of -4 and the first round and it got five in the second round what is his total score aft
tankabanditka [31]
Joshua’s total score is 1 cuz -4 + 5 = 1
4 0
3 years ago
The equation of line AB is (y-3) = 5(x-4) what is the slope
Nikolay [14]

Answer:

slope = 5

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y - 3 = 5(x - 4) ← is in point- slope form

with slope m = 5

3 0
3 years ago
Two similar trapezoids have areas
puteri [66]
It d i hope this helps
3 0
2 years ago
Read 2 more answers
Other questions:
  • What is 7+9(9×6)26×74=?×6​
    11·1 answer
  • Determine the projection of vector w onto vector u. u=9i-6j, v=-3i-2j, w=19i+15j
    14·1 answer
  • -5p greater than -30 solve the inequality
    8·1 answer
  • Write a formula for the nth term of the arithmetic sequence
    8·1 answer
  • Four friends went scuba diving today. Ali dove 70 Feet. Tim went down 50 feet, Carl dove 65 Feet, And Brenda reached 48 feet bel
    10·2 answers
  • Solve the given system of equations.
    12·2 answers
  • !!!!! HELP PLEASEEE!!!!
    5·1 answer
  • Jadon is making a trail mix of chocolate pecans and peanuts to sustain him and his teammates
    9·1 answer
  • 3x+y=15 <br> 3x-y=15 (using elimination method)
    11·2 answers
  • ⚠️‼️⚠️ HELPPP PLEASE WILL GIVE POINTS ‼️⚠️⚠️​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!