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
Eduardwww [97]
3 years ago
6

John received a 68%, 72%, and 85% on three of his math tests. After his fourth math test he now has a 79% average. What score di

d he have received on his fourth test?
A) 79%
B) 89%
C) 91%
D) 100%


PLEASE EXPLAIN WHY OR I WILL RATE TWO STARS!
Mathematics
2 answers:
Dvinal [7]3 years ago
8 0

Answer:

68+72+85=225

plus 79 =304 divided by 4 = 76

plus 89 =314 divided by 4 = 78.5

plus 91=316 divided by 4 = 79

so the answer is C

plz brainlest

ArbitrLikvidat [17]3 years ago
5 0

Answer:

91%

Step-by-step explanation:

(0.68 + 0.72 + 0.85 + x)/4 = 0.79

(2.25 + x)/4 = 0.79

0.5625 + 1/4x = 0.79

1/4x = 0.2275

x = 0.91 = 91%

You might be interested in
Transversal t cuts parallel lines a and bas shown in the diagram. Which equation is necessarily true?
irina1246 [14]

Answer:

Option D is correct

Step-by-step explanation:

Using the given diagram, we want to know the equation that is true

Option A is wrong as both are on a straight line and in fact should add up to equal 180 and not be equal to each other

Option B is not correct as both are supplementary and does not equal each other

Option C is not correct, both are corresponding to each other and should not add up to 90

Option D is correct

Both angles are supplementary as they are exterior angles that add up to 180

4 0
3 years ago
In QRS m Q = 80 degrees m R = 65 degrees m S = 35 degrees which side of the QRS is the longest
lutik1710 [3]

Answer: RS

Step-by-step explanation:

A greater angle of a triangle is opposite a greater side. If angle Q is greater than angle R, then side RS is greater than side QS.

Because Q is the larger angle in the triangle, Then RS is the longest side.

7 0
3 years ago
What is the value of this expression when c=-4 and d = 10?<br> 1/4(c3+d2)
Mumz [18]
<h2><u>Q</u><u>u</u><u>e</u><u>s</u><u>t</u><u>i</u><u>o</u><u>n</u>:-</h2>

What is the value of this expression when c = -4 and d = 10 ? \frac{1}{4} (c³ + d²)

<h2><u>A</u><u>n</u><u>s</u><u>w</u><u>e</u><u>r</u>:-</h2>

<h3>Given:-</h3>

\frac{1}{4} (c³ + d²) where c = -4 and d = 10

<h3>To Find:-</h3>

The value of the expression \frac{1}{4} (c³ + d²)

<h2>Solution:-</h2>

\frac{1}{4} (c³ + d²) [Given expression]

Now, putting the value of c = -4 and d = 10 , we get,

\frac{1}{4} { (-4)³ + (10)² }

\frac{1}{4} ( -64 + 100 )

\frac{1}{4} ( 36 )

\frac{1}{4} × 36

\bf = \: 9 \: ( Answer )

3 0
3 years ago
Decrease £77 by 8%<br> Give your answer rounded to 2 DP
maxonik [38]

Answer:

the answer is 70.84. hope this helps

7 0
3 years ago
A retailer purchased soccer cleats for $18 from a wholesaler.The retalier sells the cleats for $32.What is the markup rate?Round
Tamiku [17]

Answer:

0.7bar

Step-by-step explanation:

(32-18)/18

=14/18

=7/9

=0.7bar

4 0
3 years ago
Read 2 more answers
Other questions:
  • Solve 5x - y = -38<br> 3x + 4y = 0
    12·2 answers
  • George cut 5 oranges into quarters.How many pieces of orange did he have?
    13·2 answers
  • In a park, a sidewalk is built around the edge of a circular garden as shown below. The sidewalk is 5 feet wide, and the garden
    9·1 answer
  • Emily catches the school bus at 7:45 am she needs 30 minutes to get dressed 15 minutes to eat breakfasts, an 10 minutes to walk
    10·2 answers
  • Will mark brainliest pls help
    13·2 answers
  • Denise likes 2 teaspoons of milk in every 8-ounce cup of coffee she drinks. How many teaspoons of milk does Denise like per ounc
    6·2 answers
  • (03.04 LC)<br> Which of the following is a compound?<br> O Cl2<br> O H20<br> O He<br> O H₂
    9·1 answer
  • What is √ 63 − 4 √ 7??
    8·1 answer
  • Solve the following:
    15·2 answers
  • . Keith plans on eating 1 cup of tuna per day for five days. How much tuna does he need? Are 4 cans enough?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!