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
AVprozaik [17]
3 years ago
7

Last semester, Zachary earned an average score of 80 points on math tests. So far this semester, his average score is 15% lower.

What is the average of Zachary's scores this semester?
Mathematics
2 answers:
Ghella [55]3 years ago
7 0

Answer:

The answer would be 12

Step-by-step explanation:

15/100 =  X/80

To solve the equation above for X, you first switch the sides to get the X on the left side, then you multiply each side by 80, and then finally divide the numerator by the denominator on the right side to get the answer.

The equation

15/100 = X/80

X/80 = 15/100

X*80/80 = 15*80/100

X = 1200/100

X = 12

Ostrovityanka [42]3 years ago
4 0
Look here no one help if people do too much time waste till help received just use app names guthmath helps with math and use this code P9EJ5H to get answere because believe me u will wait alot the app is free
You might be interested in
What is the value <br> 6=a/4+2
Tpy6a [65]

Answer:

a=16

Step-by-step explanation:

16/4+2 = 6

Thus the answer is 16

7 0
3 years ago
Six people are in attendance in a meeting and are communicating with one another. how many two-way channels of communication are
madam [21]
I think the correct answer is 3
3 0
3 years ago
If the point (2, 5) is a solution to the system of equations shown below, then determine the missing values of b and m. Show how
antoniya [11.8K]

Complete Question:

If the point (2, 5) is a solution to the system of equations shown below, then determine the missing values of b and m. Show how you arrive at your answer.

1. y = 3x + b

2. y = mx + 9

Answer:

1. Intercept, b = -1

2. Slope, m = -2

Step-by-step explanation:

Given the following data;

Points on the line (x, y) = (2, 5)

To find the missing values;

Mathematically, the equation of a straight line is given by the formula;

y = mx + b

Where;

  • m is the slope.
  • x and y are the points
  • b is the intercept.

1. y = 3x + b

Substituting the value of x and y, we have;

5 = 3(2) + b

5 = 6 + b

b = 5 - 6

<em>Intercept, b = -1</em>

2. y = mx + 9

Substituting the value of x and y, we have;

5 = m(2) + 9

5 = 2m + 9

2m = 5 - 9

2m = -4

m = -4/2

<em>Slope, m = -2</em>

6 0
3 years ago
Mr. Scott uses an 8 GB flash drive to store his files for his classroom. His principal buys him a new 64 GB flash drive. What is
katovenus [111]

Answer:

12.5%

Step-by-step explanation:

8 / 64*100 =

(8 * 100) / 64 =

800 / 64 = 12.5

Hope this helped buddy! :D

4 0
3 years ago
Read 2 more answers
After batman brought the joker to justice , the crime rate in arkham city decreased by 12%. Previously the crime rate was c inci
alexandr402 [8]

Previous crime rate = c incidents per 1,000 people

Reduction in crime rate after batman brought the joker to justice = 12%

Hence, new crime rate (per 1,000 people) would be = c - 12%×c

⇒ New crime rate (per 1,000 people) would be = c - 0.12×c

⇒ New crime rate (per 1,000 people) would be = 0.88×c

Hence, now the crime rate is 0.88×c per 1,000 people.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Name the property used to make the conclusion. If x=y and y=4, then x=4.
    15·1 answer
  • Such that |x-a|&lt;\varepsilon and $x-b|&lt;\varepsilon. can $a$ be countable? can $a$ be uncountable?
    6·1 answer
  • Mandy built a pyramid for her project on Egypt with a
    10·2 answers
  • Can some one help me in this problem
    9·1 answer
  • Which of the following situations most likely result in a negative correlation when the data is displayed on a scatterplot?
    7·1 answer
  • A division of a company produces income tax apps for smartphones. Each income tax app sells for $9. The monthly fixed costs incu
    13·1 answer
  • Mean median mode range on 83 75 74 40 85 64 23 68
    9·1 answer
  • If EG= 30 and EF=11, then FG=
    8·1 answer
  • The profit a company makes from producing x tabletops is modeled by the equation P(x) = 480x – 2x2. For what number of tabletops
    7·1 answer
  • If BE bisects _ABD and mŁABE = 28°, find m_ABD.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!