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
EastWind [94]
3 years ago
7

Angela’s average for six math tests is 87. on her first four tests she had scores of 93, 87, 82, and 86. on her last tests she s

cored 4 points lower than she did on her fifth test what scores did Angela receive on her firth and sixth tests?
Mathematics
1 answer:
Annette [7]3 years ago
7 0

Answer:

the scores on her last test is x (x > 0)

because on her last tests she scored 4 points lower than she did on her fifth test

=> the scores in the 5th test is x + 4

because Angela’s average for six math tests is 87, we have:

\frac{93 + 87 + 82 + 86 + x + x + 4}{6} = 87 \\  \\  <  =  >  \frac{352 + 2x}{6}   = 87 \\  \\  <  =  > 352 + 2x = 522 \\  \\  <  =  > 2x = 170 \\  \\  <  =  > x = 85

=> on her last test, she had 85

=> on her 5th test, she had 85 + 4 = 89

You might be interested in
If the circumference of a circle is 201 centimeters what is the radius of the circle (to the nearest whole number)? Use 3.14 for
saul85 [17]
Formula for circumference:  C = 2pi*r

This becomes 201 cm = 2(3.14) r

Divide both sides of this eqn by 6.28:

201
------- = r  = 32 cm (approx).
6.28 
7 0
3 years ago
Complete the square to determine the maximum or minimum value of the function defined by the expression. x2 + 30x + 21 A) maximu
AveGali [126]
X^2 + 30x + 21
=   ( x + 15)^2 - 225 + 21
= (x + 15)^2 - 204

Its D  minimum at -204
8 0
3 years ago
Read 2 more answers
[100 POINTS]!!
Lelechka [254]
The first thing that shoyuld be noted is that you have linear functions here : straight lines in your graph

6 0
3 years ago
Select the correct answer. A report on Americans’ attitudes toward eating out found that 73% of the respondents to the survey up
LenaWriter [7]

Answer:

D

Step-by-step explanation:

Factors B, C and E are totally irrelevant.

8 0
3 years ago
Read 2 more answers
Solve the system of two equations 2y=8 and 15y=2x-4
damaskus [11]
To find y, divide the first equation by 2.
  y = 4

To find x, use that value for y in the second equation. Add 4, then divide by 2.
  15·4 = 2x -4
  60 +4 = 2x
  64/2 = x = 32

The solution is (x, y) = (32, 4).

8 0
3 years ago
Other questions:
  • 6 times a larger number (so 6y) is equal (=) to the sum of a snaller number and 18 (x+18)
    10·2 answers
  • Here is the histogram of a data distribution,
    10·2 answers
  • Help please! this is due tomorrow so please help out! will mark as brainiest!!
    10·1 answer
  • Find the nth term of this number sequence<br> 18, 16, 14, 12,...<br> Pls help
    5·2 answers
  • Write 0.000000474 in scientific notation.
    11·1 answer
  • Using the circle below, determine the coordinates of the center and the length of the diameter.
    10·1 answer
  • The sum of two numbers is 5. The difference of two numbers is -1. Find the numbers
    7·2 answers
  • Exercise 2
    9·1 answer
  • Pls help me with this question it’s math look at the pic
    15·1 answer
  • Help Katherine has a new job and earns salary of $55,000. max has a new job and earns a salary of $64,000. Katherine will receiv
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!