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
abruzzese [7]
3 years ago
9

Mildred has seven grades on her report card. The overall average of these grades is 77%. After looking more closely at her repor

t card, Addie realizes that her English grade was incorrectly recorded as 18% instead of 81%. What is Mildred’s actual report card average
Mathematics
1 answer:
KIM [24]3 years ago
6 0

Answer:

86

Step-by-step explanation:

Firstly,

Average = Sum/Number of Numbers

Since 7 grades' average is 77, so we can say:

77 = Sum/7

Hence, Sum = 77 * 7 = 539

Now,

81 - 18 = 63 [63 marks were recorded incorrectly. actual sum would be 63 more]

So,

Actual Sum should be 539 + 63 = 602

Actual Average = 602 / 7 = 86

Hence, actual report card average would be 86

You might be interested in
I dont understand this
nata0808 [166]

Answer:

The correct answer is:

d) 2x^{2}+3x-3+\frac{3}{4x-6}

Step-by-step explanation:

The given question is regarding polynomial division.

Please find the attached file for the explanation.

Polynomial division gives:

Quotient: 2x^{2}+3x-3

Remainder: 3

8 0
3 years ago
How many squares make up the surface of a cube
vazorg [7]

Answer:

6

Step-by-step explanation:

on top,bottom and four on every sides.

4 0
3 years ago
Read 2 more answers
(-6)(2)+(-8/4)<br>What is the Value of this Expression
Sedbober [7]

Answer:

i dont know im sorry but i will still try

5 0
3 years ago
Pls help this question bamboozles me and I am now sitting here confused
UkoKoshka [18]

Answer:

10+3pi

Step-by-step explanation:

The perimeter of of the shaded region is

AC+CT+marcSBT+SA

*Finding AC

The diagonals of a rectangle are equal is measurement. Since RB is a radius of the circle, then RB is 6. Since AC and RB are both diagonals of the rectangle, then AC is also 6.

*Finding CT

CT=RT-RC where RC is the width of the rectangle

Also RT is a radius so we have that

CT=6-RC

*Finding marcSBT

The circumference of a whole circle is 2pi*r.

We have a quarter of this with r=6.

1/4*2pi(6)

1/4*12pi

3pi

*Finding SA

SA=RS-AR

RS is a radius of the circle and AR is the length of the rectangle.

So we have that this can be rewritten as

SA=6-AR

Let's put these parts together:

6+6-RC+3pi+6-AR

Simplifying:

18-RC-AR+3pi

18-(RC+AR)+3pi

18-8+3pi (Remember length plus width equal 8)

10+3pi

4 0
3 years ago
Factor 2x2 + 11x + 15 using algebra tiles and symbolically
fomenos
2x^{2}+11x+15=2x^{2}+6x+5x+15=2x(x+3)+5(x+3)= \\  \\ (2x+5)(x+3)
7 0
3 years ago
Other questions:
  • There are 12 bags of apples on a market stall. The mean number of apples in each bag is 8. the table shows the number of apples
    7·1 answer
  • For homework, Brooke has 15 math problems, 5 social studies problems, and 9 science problems. Use mental math to determine how m
    12·1 answer
  • Please Help!!!! Emergency!!!!
    11·1 answer
  • The cost to repair a car after a collision was $2,700. The automobile insurance policy paid the entire bill except for a $675 de
    11·1 answer
  • Jeff and Brett both play basketball at the country club. Jeff is a
    12·1 answer
  • Simplify as far as possible 2√3 +3√3​
    10·2 answers
  • Kjlwhdoqhwdoiqhwdohnvm
    14·1 answer
  • Jimmy has 3 yellow pencils, 4 red pencils, 2 green pencils, and 3 blue pencils i his packback. what is the probability thst Jimm
    14·1 answer
  • Can i have some helps plz​
    11·1 answer
  • Which of the following statements is true based on the data set shown below?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!