Alan has scored 99, 85, and 74 on his previous three tests. What score does he need on his next test so that his average (mean) is 83?

Answers

Answer 1

Answer: (99+85+74+x)/4=83
multiply both by 4
99+85+74+x= 332
258+x=332
subtract 258 both sides
x= 74

He must get a 74.

To check answer:
99+85+74+74= 332
332/4 = 83

It’s right!

Hope it helps

Related Questions

Find the solution to the following equation by transforming it into a perfect square trinomial.x2 – 12x = 13 {46, 55} {–1, 13} {–15, 27} {–21, 33}
-16+5n=-7(-6+8n)+3 what is the work for this ?? this is the like only one i cant get
Using the breaking apart method, what is the best way to multiply 8 by 7?
A certain field is a rectangle with a perimeter of 940 feet. the length is 190 feet more than the width. find the width and length of the rectangular field.
Find the prime factorization of 63.

For what value of x is the rational expression below equal to zero 20+2x/5-x

Answers

$(20+2x)/(5-x)=0;\ \ \ \ D:x\neq5\n\n(20+2x)/(5-x)=0\iff20+2x=0\n\n2x=-20\ \ \ \ /:2\n\nx=-10\in D$

Which type of correlation would you expect to see between the temperature and the number of ice cream bars sold? A. positive correlation B. negative correlation C. no correlation

Answers

A positive correlation, because if it was warm or hot weather, the number of ice creams sold would go up.

A. positive correlation if it gets hotter B. negative correlation if it gets colder

Hich expression is rational? a. 4.121221222… b.square root of 36 c. square root of 21 d.1.192744502…

Answers

Answer: The correct option is (B) square root of 36.

Step-by-step explanation: We are given to select the correct number that is irrational.

RATIONAL NUMBER: The digits after the decimal are either terminating or repeating.

IRRATIONAL NUMBER: The digits after the decimal are non-repeating and non-terminating.

Option (A) is 4.121221222 . . .

Here, the digits after the decimal are non-repeating and non-terminating. So, the given number is irrational.

Option (B) is square root of 36, which is equal to 6.

6 = 6.00.

Here, the digits after the decimal are terminating. So, the given number is rational.

Option (C) is square root of 21.

We know √21 = 4.5825756 . . .

Here, the digits after the decimal are non-repeating and non-terminating. So, the given number is irrational.

Option (D) is 1.192744502 . . .

Here, the digits after the decimal are non-repeating and non-terminating. So, the given number is irrational.

Thus, the rational number is square root of 36.

Option (b) is correct.

A rational number is any number that can be expressed as the quotient of fraction of two integers.So the answer is b.square root of 36 = √36=6 because 6 is the quotient of 6/1

What is the measure ofA
30°
C

Answers

Answer:

120°

Step-by-step explanation:

Which are acceptable names for the plane?Choose all answers that are correct.

A. Plane AU

B. Plane JAU

C. Plane R

D. Plane ABC

Answers

I would say C.) and B.) would be the answer

Solve the following simultaneous linear equations by the elimination method. 2p - 3q = 13
p - 3q = 2

Answers

Answer:

p = 11 q = 3

Step-by-step explanation:

2p - 3q = 13

- p - 3q = 2

p = 11

p - 3q = 2

(11) - 3q = 2

-3q = -9

q = 3

Answer:

p=11 q=3

Step-by-step explanation:

subtract second from first

2p-3q=13

-p+3q=-2

p=11

plug in

11-3q=2

-3q=-9

q=3

Other Questions

A rectangular cartoon is 80 cm x60 cm x40 cm .then, how many packets of shops can each of 10 cm x 5cm x 4 cm be kept inside the cartoon

Q: At noon the armadillo left the wild kingdom and headed north at 3 kilometers per hour . two hours later the raccoon left the same kingdom and headed south at 5 kilometers per hour . at what time will the animalse be 38 kilometera apart ?

The cost of 5 litres of milk is Rs. 55. Tabulate the cost of 2, 4 and 10 litres of milk please help me complete the table

3/10 minus what equals 2/5?