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3 years ago

What. Is the answer for 13+x/2=3x for x. Plz explain and show work

Mathematics

1 answer:

GREYUIT [131]3 years ago

4 0

13+x/2 =3x
multiply by 2 to get rid of the fraction
13+x=6x
subtract x from both sides
13=5x
divide by 5
x=13/5

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3 years ago

Divide 35b^5 +20ab^3 +20a^2b^2 by 5b^2

Nookie1986 [14]

Basically, you just divide each term in the equation by b^2.
So 35b^5 / b^2 = 35b^3, 30ab^3 / b^2 = 30ab, and 20a^2b^2 / b^2 = 20a^2.
So your final answer is 35b^3 + 30ab + 20a^2.

5 0

4 years ago

NEED HELP PLEASE!!!

zimovet [89]

Variables:
p = uniform pants
c = baseball caps

Equations:
$2p + 2c = 68$
$p - c = 12$
****************************************************************************************
Step 1.
$\left {{2p+2c=68} \atop {p-c=12}} \right$

Step 2.
$\left {{2p+2c=68} \atop {2(p-c=12)}} \right.$

Step 3.
$\left {{2p+2c=68} \atop {2p-2c=24}} \right.$

Step 4.
$4p = 92$

Step 5.
$\frac{4p}{4} = \frac{92}{4}$
$p=23$

Step 6.
$p-c=12$
$23 - c=12$
 $23=12+c$
 $11=c$

Baseball Pants = $23
Baseball Caps = $11

6 0

4 years ago

I need help...............................

Vanyuwa [196]

Answer:

Step-by-step explanation:

First box:4/52

Second box:4/52

Third box:4/52, 4/52, maybe u combine it

Fourth box:4/52, 4/51

Fifth box:4/52, 4/52 or combine

Sixth box:4/52,4/51

Seventh box:8/52, 8/52, or combine

( hope this helps )

7 0

3 years ago

A fishing barge leaves from a dock and travels upstream (against the current) for 4 hours until it reaches its destination 12 mi

tresset_1 [31]

Answer:

v(b) = 4,5 mil/h speed of the barge in still water

Step-by-step explanation:

d = v*t barge going upstream 12 miles and 4 hours trip

barge returning back 12 miles and 2 hours trip

let call v(b) barge velocity and

v(w) water velocity

d = 12 (Mil) = 4 (h)* [(v(b) - v(w)]

3 = v(b) - v(w) (1)

d = 12 (mil) = 2 (h) * [ (v(b) + v(w)]

6 = v(b) + v(w) (2)

Equations (1) and (2) is a two system equation. Solving

from equation (1) v(w) = v(b) - 3

By subtitution in equation (2)

6 = v(b) + v(b) - 3

9 = 2v(b)

v(b) = 9/2 ⇒ v(b) = 4,5 mil/h

5 0

3 years ago