MATHEMATICS MIDDLE SCHOOL

How do I solve this problem?

Answers

Answer 1

Answer:

Answer:

f(8) = -9

Step-by-step explanation:

f(x) = -2x+7

f(8) means let x=8

f(8) = -2(8) +7

=- 16+7

= -9

f(8) = -9

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Mr. Hogan's class has 16 students in it. On picture day 5 students stand in the first row, 4 students stand in the second row, 3 students stand in the third row, and 4 students stand in the fourth row. If a random student blinks what is the probability that the student will be in the second or third row?A. 1/4 B. 3/16 C. 5/16 D. 7/16
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Marita orders 12 yards of material to make banners. If she needs 1 foot of fabric for each banner, how many banners can she make??

I know that 1 yard= 3 feet

Answers

$1\ yard= 3\ feet\ \ \ \Rightarrow\ \ \ 12\ yards=12\cdot3\ feet=36\ feet\n\n1\ banner\ \ \rightarrow\ \ \ 1\ foot\ of\ material\nx\ \ \rightarrow\ \ \ 36\ feet\n\nx=36\ [banners]\n\nAns.\ 36\ banners$

3 x 12= 36
36/1= 36 banners

The height (h metres) and age (a years) of a tree are related by the following inequality:
h < 4a – 3 for values of a between 1 and 10
Which pair of values satisfy this inequality?
a. h = 2 and a = 1
b. h = 6 and a = 2
c. h = 10 and a = 3
d. h = 20 and a = 6

Answers

h < 4a – 3
(2) < 4(1) - 3
2 < 4 - 3
2 < 1
Not True

h < 4a – 3
(6) < 4(2) - 3
6 < 8 - 3
6 < 5
Not True

h < 4a – 3
(10) < 4(3) - 3
10 < 12 - 3
10 < 9
Not True

h < 4a – 3
(20) < 4(6) - 3
20 < 24 - 3
20 < 21
True

Answer: (d) h = 20 and a = 6

Please tell me the answers

Answers

4. 6
5. 10
6. 2
8. 4
9. 6

Which is a reasonable first step that can be used to solve the equation 2(x+6)=3(x-4)+5

Answers

parenthesis
i think,
or distributive property

First you would solve the parenthesis.

making the equation 2x + 12 = 3x -12 + 5

Omg this is too hard for me actually. HELP!!!

Answers

8*6=48/2=24 24*9.5=228ft3

David can finish painting the room in 6 hours, and his elder brother Antony can finish it in 4 hours. If both brothers paint the room together, how many hours will it take them?