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Korolek [52]
3 years ago
14

Given that f(x)=-3x+9, what is f(4)?

Mathematics
2 answers:
timurjin [86]3 years ago
6 0

Answer:

F(4) = -3

Step-by-step explanation:

First, you would plug in 4 for x. PEMDAS, so you would multiply -3 and 4, giving you -12. Then add 9, which gives you -3.

mote1985 [20]3 years ago
5 0

Answer:

Step-by-step explanation:

f(4)= -3*4+9

f(4)=-12+9

f(4)=-3

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In the 7th grade, 165 students ride the bus to school. If there are 250 students in 7th grade, what percent rides the bus? Pleas
castortr0y [4]

Answer:

66 Percent of students rides the bus to school, which is approx 1/3 lol

Step-by-step explanation:

Have a nice day

5 0
3 years ago
What is the value of x?<br> A. 3<br> B. 9<br> C. 15<br> D. 30
ra1l [238]

Answer:

<em>C. 15</em>

Step-by-step explanation:

Assuming that these segments formed from each parallel line are proportional, x/5 = x-6/3.

Now cross multiply by multiplying each denominator by the opposite numerator, this is so the denominators or bottom numbers of each fraction will cancel.

x/5 = x–6/3 → (3)(x/5) = (3)(x–6/3) → 3x/5 = x–6 →

(5)(3x/5) = (5)(x–6) → 3x = 5(x–6) → 3x = 5x – 30.

The last step is to do the basic algebra to find x:

3x = 5x – 30

–5x –5x

[5x will cancel when you subtract both sides by 5x]

-2x = -30

(-1) (-1)

[2 negatives make a positive when -1 is multiplied by an expression with a negative coefficient]

2x = 30

÷2 ÷2

[divide both sides by 2 to simplify 2x to x]

x = 15

_____

You can also check that both sides are proportional because

5 → x

x = 15

5 → 15

3 → x – 6

x = 15

3 → 9

5 × <u>3</u> = 15

3 × <u>3</u> = 9

7 0
3 years ago
Find the perimeter of quadrilateral ABCD with vertices A=(1,1) B=(4,4) C=(7,1) D=(4,-2). Explain your answer.​
Vanyuwa [196]

we have the coordinates of ABCD

there are 2 ways of doing this one is you find the distance of ab, bc, cd and da and then add the answers together. there is another way but i dont remember it properly so i am just gonna do it this way

distance between 2 point = \sqrt{(x_B-x_A)^2+(y_B-y_A)^2}

AB

d = \sqrt {(4 - 1)^2 + (4 - 1)^2}

d = \sqrt {(3)^2 + (3)^2}

d = \sqrt {9 + 9}

d = \sqrt 18

AB = 4.24

now repeat the same with all

BC= 4.24

CD= 4.24

DA= 4.24

so its a square with all the same sides so perimeter is 4 x 4.24

perimeter is 16.96

hope this helps

mark me as brainliest please

3 0
2 years ago
What is the area of a rectangle that has the base of 5 centimeters and a height of 2 centimeters?
Alex_Xolod [135]

Answer:

10 square centimeters.

Step-by-step explanation:

The area of a rectangle=base*height. 5*2=10 square centimeters.

5 0
3 years ago
Read 2 more answers
Write 3.242424... as a mixed number
Marysya12 [62]

Answer:

3 8/33

Step-by-step explanation:

5 0
3 years ago
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