MATHEMATICS HIGH SCHOOL

If f(x)=2x-5, find x when f(x)=13

this is function notation

Answers

Answer 1
Answer: f(x)=2x-5;\ f(x)=13\n\Downarrow\n2x-5=13\n2x-5+5=13+5\n2x=18\n2x:2=18:2\n\underline{\underline{x=9}}
Answer 2
Answer: f(x)=2x-5\n \n f(x)=13 \rightarrow 2x-5=13\n \n 2x=13+5\n \n 2x=18\n \n x=(18)/(2)\n \n \boxed{x=9}

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What is the axis of symmsymmiof y=2(x+1)^2

Answers

y=a(x-h)^2+k
axis of symmetry is x=h

given
y=2(x-(-1)^2+0
h=-1
axis of symmetry is x=-1

The product of w and 373

Answers


Watch closely:

That product can be written as                          373w

What is the slope of the line that contains the points (-2, 8) and (-2, 1)?9

4

undefined

- 7

4

0

Answers

slope of the line = m

(y-y')= m (x-x')
(8-1)= m {-2 -(-2)}
7 = m (-2+2)
7 = m x 0
m= (7÷0)

so m is undefined.

so; the slope of the line is undefined... :)

A law office is installing new file cabinets. Each file drawer can hold records for 50 clients, and each cabinet has 5 drawers. If the office has 600 clients, how many cabinets should be ordered to store the existing files

Answers

Given:
Each cabinet has 5 drawers.
Each drawer can hold records for 50 clients.

Now,
Each cabinet can hold records for (50 × 5) clients
                                                 = 250 clients

Now,
Using unitary method,
250 clients records can be held up in 1 file cabinet.
1 client records can be held up in (1 / 250) file cabinet
600 client records can be held up in (1 / 250) × 600 file cabinet
                                                   = 2.4

So, we need 3 file cabinets...cause we cant't get 2.4 file cabinet
1 drawer= 50 clients
I used ratio and proportion first

1 drawer/50 clients= x drawers/600 clients
cross multiply
50x= 600
x= 12 drawers
12 drawers/5 per cabinet=
2/25 or 2.4
need to order 3 cabinets

hope this helps

Help plz fast and thank you!

Answers

Answer:

45 (1+2)

Step-by-step explanation:

Answer:5,5,4

Step-by-step explanation:5+4=9

9*5=45

Which of the following expressions is not equivalent to:4(3x2 + 6x)

A. 12x2 + 24x B. 2x(6x + 12) C. 6x(2x2 + 4x)

Answers

Answer=C

4(3x^2+6x)
can be simplified to...
12x^2+24x

To find out which expression isn't equivalent, you have to simplify them...

a=12x^x+24x

b=2x(6x+12)
b=12x^2+24x

c=6x(2x^2+4x)
c=12x^3+24x
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