All categories

4 years ago

PLEASE I NEED HELP ASAP ITS DUE TOMORROW PLEAAASEE HELP ME 30 POINTS AND BRAINIEST!!!

Mathematics

1 answer:

Hunter-Best [27]4 years ago

6 0

Step-by-step explanation:

Work: (A)

a) 20−4x=12−x+8−3x

20−4x=12−x+8−3x

20+−4x=12+−x+8+−3x

−4x+20=(−x+−3x)+(12+8)

−4x+20=−4x+20

−4x+20+4x=−4x+20+4x

20=20

20−20=20−20

0=0

In this equation... All real #s are solutions.

Work: (B)

b) 5x+4x−3=24+8x

5x+4x−3=24+8x

5x+4x+−3=24+8x

(5x+4x)+(−3)=8x+24

9x+−3=8x+24

9x−3=8x+24

9x−3−8x=8x+24−8x

x−3=24

x−3+3=24+3

x=27

Work: (C)

c) 5x+6=2x+6+3x−15

5x+6=2x+6+3x−15

5x+6=2x+6+3x+−15

5x+6=(2x+3x)+(6+−15)

5x+6=5x+−9

5x+6=5x−9

5x+6−5x=5x−9−5x

6=−9

6−6=−9−6

0=−15

HOPE THIS HELPS <3 :D

You might be interested in

Pls exsplain how you got the answer :P

Fiesta28 [93]

Answer:

520 miles

Step-by-step explanation:

You take distance divided by time so 260/4 = 65(mph) so 65(mph) multiplied by 8 hours which is 520 miles

Hope that helps

5 0

3 years ago

Read 2 more answers

Assume f(x)=2x+8 and g(×)=5 what is the value of (g o f)(3)

RUDIKE [14]

We first need to find f(3).

f(3) = 2(3) + 8

f(3) = 6 + 8

f(3) = 14

We now want g(f(3)).

We know that f(3) is 14.

We also know that g(x) is 5.

As you know, 5 is a constant. No matter what the value of x is for g(x), it will not change the value of g(x).

So, g(f(3)) = g(14) = 5.

Answer: g(f(3)) = 5.

7 0

4 years ago

Read 2 more answers

The formula for the area of a triangle is A=bh/2. The area of a triangle is 26 cm squared and its base is 12cm. Using algrebra,

Fed [463]

Answer:

4 and 1 / 3 cm

Step-by-step explanation:

Consider the following;

$A = 1 / 2 * Base * Height,\\26 cm^2 = 1 / 2 * ( 12 cm ) * Height$

Let us say that Height = x. If that is so, through algebra, let us solve for x;

$26 cm^2 = 1 / 2 * ( 12 cm ) * x,\\26 cm^2 = 6 cm * x,\\26 cm^2 / 6 cm = x,\\\\x = 26 cm^2 / 6 cm,\\x = 4 and 1 / 3\\\\Conclusion, Height = 4 and 1 / 3 ( cm )$