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
Dovator [93]
3 years ago
7

Ronna answered 18 of the 20 questions on her second math test correctly. On the first test, she had answered only 15 of 20 quest

ions correctly. What was the percent increase in her score from her first test to the second test? A. 15% B. 35% C. 75% D. 90
Mathematics
1 answer:
lakkis [162]3 years ago
4 0

Answer:

A: 15%

Step-by-step explanation:

First test:

15 ÷ 20 = 0.75

0.75 * 100 = 75%

Second Test:

18 ÷ 20 = 0.9

0.9 * 100 = 90%

90% - 75% = 15%

You might be interested in
Choose the equations in which d = 1000 will make the equation true
Brilliant_brown [7]

Answer:

there are no equations I can choose from

Step-by-step explanation:

...

5 0
3 years ago
Solve the inequality. Graph the solution on a number line.
Leya [2.2K]

Answer:

x is bigger than or equal then 5

also known as x>5 but with a line under the >

Step-by-step explanation:

Hope this is right

4 0
3 years ago
What is 10−5(8+3x)?<br> Please give a short and clear answer.
Ghella [55]
I believe the answer is :
15x + 40
If you just distribute
6 0
3 years ago
Read 2 more answers
Suppose John has a torn tendon and is facing surgery to repair it. The surgeon explains the risks to John: infection occurs in 2
serg [7]

Answer:

Step-by-step explanation:

The total number of operations prepared by the surgeon is X.

The questions can be solved by set

For two sets A and B,

Where A= The surgery done with infections

B= Surgery done which failed

n(AᴜB) is the number of elements present in either of the sets A or B.

n(A∩B) is the number of elements present in both the sets A and B.

Y= number of surgery  which succeed and are free from infection

n(AᴜB) = n(A) + (n(B) – n(A∩B) + Y

X= 2% of X + 12% of X -1.35% of x + Y

X=0.02X+0.12X-0.0135X+Y

X=0.1265X+Y

Y=X-0.1265X

Y=0.8735X

Therefore the operation s that succeed and are free from infections  is 0.8735 or 87.35%

6 0
3 years ago
Elena walked 12 miles. Then she walked 14that distance. How far did she walk all together
True [87]

Answer:

I don't get the question

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Beau made a new hamster house for Dr.cheeks out of 125.5 craft sticks. each stick weighs 0.5 ounce. How much does the hamster ho
    5·2 answers
  • PLZ HELP NNOOOOOOOWW!! 15 points!!
    8·1 answer
  • Use the distributive property to simplify the following problem:<br> 9 (x +9)
    7·2 answers
  • Can someone pls answer all 6 questions pls? Pretty pls, except 1 and 5 thank you so much!!!
    14·2 answers
  • Joel looks at a map of Colorado, scowls, and tears it to shreds. "I don't need this lousy map," he mutters, puffing out his ches
    12·2 answers
  • Name a pair of vertical angles
    13·2 answers
  • What is the area of the shaded?​
    13·1 answer
  • Cos Y=?<br><br> 5/13<br><br> 5/12<br><br> 12/13
    6·1 answer
  • What is the exact angle between the clock hands at 6:45:00 PM? Plz show work
    5·2 answers
  • Please help! Based on the picture above, select the correct angle pair for 3 and 5
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!