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
joja [24]
3 years ago
13

Stephanie took a science exam that had two parts. Part 1: She got 16 questions correct, which was 45 of the number of part 1 que

stions. Part 2: She got 16 questions correct, which was 23 of the number of part 2 questions. What was the total number of questions on Stephanie's exam?
Mathematics
1 answer:
vesna_86 [32]3 years ago
5 0

Given :

Stephanie took a science exam that had two parts. Part 1: She got 16 questions correct, which was 4/5 of the number of part 1 questions. Part 2: She got 16 questions correct, which was 2/3 of the number of part 2 questions.

To Find :

The total number of questions on Stephanie's exam.

Solution :

Let, number of questions in Part 1 is x :

16=\dfrac{4}{5}x\\\\x=20

Let, number of questions in Part 2 is y :

16=\dfrac{2}{3}y\\\\y=24

Therefore, total number of questions on Stephanie's exam are 20 + 40 = 60.

Hence, this is the required solution.

You might be interested in
7. What is the force of tension in a rope that spins a 250 g object in a vertical circle with a radius of 50 cm if the
Phantasy [73]
Subtract 250-50 which equals 200 and then multiply it by 3 which is 600
4 0
3 years ago
If tile costs $8.50 per square foot, how much does it cost per inch?
Sphinxa [80]

Answer:

$0.06 per square inch

Step-by-step explanation:

The question should be:

<em>"If tile costs $8.50 per square foot, how much does it cost per square inch?"</em>

<em />

To solve this, we basically need a conversion from feet to inches. BUT 2 times, since we are talking about "square feet" and "square inches".

We know 1 feet = 12 inches

Also, since we are going from square feet to square inches [big to small], we have to divide TWICE.

Thus, we will have:

\frac{8.5}{12*12}

We are dividing 8.5 (the cost) by 12, 2 times since we want square feet in square inches. The answer is:

\frac{8.5}{12*12}=0.06

So, tile costs $0.06 per square inch

6 0
3 years ago
In a Calculus class, there are 11 freshman and 15 sophomores; 5 of the sophomores are females,
KATRIN_1 [288]

Answer:

61.5%

Step-by-step explanation:

Let's find all the demographics first:

Sophomores in the class(total 15):

Female: 5

Male : 10

Freshmen in the class(total 11):

Female: 3

Male: 8

There are 11 freshmen(male and female) and 5 female sophomores. Thus, the probability of choosing one of these 16 people in a class of 26 is 16/26 or 61.5%.

4 0
3 years ago
Sammy’s dad drove their car 150 miles in three hours. At this rate, how far would he drive in nine hours?
PilotLPTM [1.2K]

Answer:

distance in 3 hours = 150 miles

distance in 1 hour = 150/3 = 50 miles

distance in 9 hours = 50 × 9 = 450 miles

4 0
2 years ago
Read 2 more answers
Please answer please
love history [14]

Answer:

43.5 cm²

Step-by-step explanation:

½ × 12 × 8 × sin(65)

= 43.50277378 cm²

7 0
3 years ago
Other questions:
  • Simplify -1-5 + 21.​
    5·1 answer
  • if two angles of a triangle have measures of 42 degrees and 20 degrees what is the measure of the third
    9·1 answer
  • Help me with problems 13 ,14 and 15
    7·1 answer
  • You may believe that the gender of a salesperson influences the sales of cars. The best way to incorporate this predictor is by
    12·1 answer
  • If anyone knows the answer can you please help me PLEASE
    11·1 answer
  • It’s a math problem (khan academy)
    11·1 answer
  • Can somebody help with this??
    9·2 answers
  • At noon a tank contains 6 cm of water after several hours it contains 3 cm of water what is the percent inecrease of water in th
    5·1 answer
  • If a=b-2x/x+c,then what is the value of x in terns of a,b &amp; c ?​
    11·1 answer
  • CAN SOME ONE HELP?!!!!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!