MATHEMATICS MIDDLE SCHOOL

F(x, y) = 4x + 7y - 6, please find the value of f(5,-5).

Answers

Answer 1
Answer:

f(x, y) = 4x + 7y - 6

substitute x=5 and y=-5

f(5,-5) = 4(5) + 7(-5) - 6

f(5,-5) =20-35-6

        = -15-6

        =-21

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Convert these answers to decimals:1/2
1/3
1/4
1/5
1/10
1/20
1/100

Answers

Take the top number of your fraction and divide it by the bottom number.
1/2 = .5
1/3 = .3 repeating
1/4= .25
1/5= .2
1/10= .1
1/20= .05
1/100=.01
1/2 = .50
1/3 = .33
1/4 = .25
1/5 = .20
1/10 = .10
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1/100 = .01

Timothy has computer class 3 times a week. Each class is 45 minutes long. How many hours of computer class does Timothy have per week? In 4 weeks?

Answers

18 classes
i might be wrong

PLEASE HELP!!!THIS IS FOR 6 POINTS!!!
How much pizza sauce is needed to cover a 16" pizza? (Note: 16" is the diameter of the pizza.)

A)
50.24 in2
B)
200.96 in2
C)
803.84 in2
D)
3215.36 in2

Answers

B) 200.96 because the area of a circle is 2*Pi* your radius which is 8 so you do 2 times 3.14 times 8  and you get 200.96 hope i helped!!
The answer is B :) Hope I helped you.

For a field trip for students Road in cars and the rest filled nine buses how many students were in each bus it for how to 72 students were on the trip?

Answers

72 divided by 9 equals 8
72/9=8

Is 75/100 less, more than, or equal to 8/10

Answers

75/100 is less than 8/10.
8/10 can be equivalent to 80/100.

75/100 is less than 80/100.

Hope this helps.
Use your calculator to make the division : 75/100 = .75 & 8/10 = .80. Therefore 8/10 is more than 75/100.

How much % of 97.99 is 83.30?

Answers

Answer=85.01% or 85% depending on where you want to round

  83.30        x
_______=____
 97.99       100

Cross multiply
97.99x=8330
divide both sides by 97.99
x=85.0086743545
round to the nearest hundredth
x=85.01%
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