2 years ago

Given that f(x) = 3x + 5, find f(x + 2)

Mathematics

1 answer:

dolphi86 [110]2 years ago

5 0

Answer:

f(x)=3x+5

f(x+2)=3(x+2)+5

=3x+6+5

=3x+11

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3x−8 ≤ 23 OR −4x+26≥6 find x

ElenaW [278]

Answer:

3x-8<=23

3x<=23+8

3x< =31

X< = 10.3

-4x+26>=6

-4x>=-20

X>=5

6 0

3 years ago

Work out the area of a rectangle with base, b = 34mm and perimeter, P = 86mm.

Nana76 [90]

Answer:

306mm²

Step-by-step explanation:

the height h = 86/2 -34 = 43-34=9mm

the area = 34×9= 306mm²

8 0

2 years ago

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Pls help (kinda easy)

3241004551 [841]

Answer:

$f(x)=(2x+1)(2x-1)$ .

Step-by-step explanation:

We want to convert the function into the form that let's us easily find the x-intercept, and it would be for the form $(ax+b)(cx+d)$ because then we can find the x-intercept in the following manner:

$(ax+b)(cx+d)=0$

$x=-b/a$

$x=-d/c$

We factor our function $f(x)=4x^2-1$ and get

$\boxed{f(x)=(2x+1)(2x-1)}$

Now this form let's us easily find the x-intercepts:

$x=-1/2$

$x=1/2$

and so we pick the second choice: f(x)=(2x+1)(2x-1).

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2 years ago

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Hey guys help my please !!Q 4,6,7

padilas [110]

Q4, 4y²=60
y=√15 ( i am not sure)
q6, (5+y) ²=81
5+y=9
y=4
q7 (x+4) (x) =77
x²+4x-77=0
(x+11) (x-7) =0
x=-11(rej) or x=7
therefore ,length= 7+4=11cm
breadth=7cm

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3 years ago

How many milliliters equal 1942 cm?

stiks02 [169]

1cm³=1mL
1942cm=x mL

1cm³ 1942cm³
________ = ________
1mL x mL

Cross multiply
1x=1942
divide both sides by 1
x=1942mL

Answer=1942mL

8 0

2 years ago

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