You got the following scores on 3 tests: 84, 82, 98. What score must
you get on the 4th test if you want to
average a 90% for the 4 tests?
A. 94
B. 95
C. 96
D. 97
E. 98

Answers

Answer 1

Answer: Your answer is c. 96
I know this because if you go on the calculator and add up 84+82+98+96 its equals to 360 and 360 divided by four (since there are now four marks including the mark you need to get on the next test) and that equals to 90.

(in other terms)
84+82+98+96=360
360÷4=90
therefore, you need to get a score of 96 on your fourth test to receive an average of 90%

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Answers

Answer:

See attachment

Step-by-step explanation:

See attachment

What is the equation of the line?

Answers

Answer:

y= -2x+8

Step-by-step explanation:

y= mx +b

m is the slope and here is m= -8/4 = -2

b is the y-intercept and here is 8

y= -2x+8

Solve question in photo. Mathematics help. last one

Answers

easeier than last
y=2x+6
sub 2x+6 for y
3x-(2x+6)=6
3x-2x-6=6
x-6=6
add 6
x=12
sub
y=2x+6
y=2(12)+6
y=24+6
y=30

x=12
y=30
(x,y)
(12,30)

soltion is (12,30)

Use long division to find the quotient, q(x), and remainder, r(x)

(x2-2x-15) / (x-5)

Answers

Quotient: x+3
Remainder: 0

If y is 5 when x is 2.5 and y varies directly with x, find y when x is 10.5
7.5
12.5
20

Answers

if y is 5 when x is 2.5 and y varies directly with x, find y when x is 10.

The term "y varies directly with x" means that the formula is a direct variation. We need to look for the constant of variation.

y = kx ; where k is the constant of variation.

k = y/x
k = 5/2.5
k = 2

We then use the direct variation formula to get the value of y when x is a certain number.

y = kx
y = 2 * 10
y = 20

The value of when y varies directly with x using the direct variation is 20.

In direct variation, the relationship between x and y can be expressed as:

y = k $*$ x