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Shalnov [3]
3 years ago
11

How to solve 3x / 4 = 8

Mathematics
2 answers:
Bogdan [553]3 years ago
8 0
Multiply each side of the equation by  4/3 .
nikklg [1K]3 years ago
5 0
First you multiply both sides of equation by 4 so you get:

\frac{3}{4} *x*4=8*4
3x=32

next you devide both by 3
\frac{3}{3}*x=\frac{32}{3}

which gives you:
x=\frac{32}{3}=10\frac{2}{3}
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love history [14]
We don't know what the question is.

It could be "What is the selling price ?"
If that's the question, then . . .

Since the store marks up their cost by 60% before they sell
the thing, the price they sell it for is

                       (1.60 of their cost).

You know their cost.  The selling price is   (1.60  x  $80) .    
8 0
2 years ago
A three inch diameter pulley on an electric motor that runs at 1800
Bezzdna [24]

Answer:

a) 3 inch pulley: 11,309.7 radians/min

6) 6 inch pulley: 5654.7 radians/min

b) 900 RPM (revolutions per minute)

Step-by-step explanation:

Hi!

When a pulley wirh radius R rotantes an angle θ, the arc length travelled by a point on its rim is Rθ.  Then the tangential speed V is related to angular speed  ω as:

V=R\omega

When you connect two pulleys with a belt, if the belt doesn't slip, each point of the belt has the same speed as each point in the rim of both pulleys: Then, both pulleys have the same tangential speed:

\omega_1 R_1 = \omega_2 R_2\\

\omega_2 = \omega_1 \frac{R_1}{R_2} =1800RPM* \frac{3}{6}= 900RPM

We need to convert RPM to radias per minute. One revolution is 2π radians, then:

\omega_1 = 1800*2\pi \frac{radians}{min} = 11,309.7\frac{radians}{min}

\omega_2 = 5654.7 \frac{radians}{min}

The saw rotates with the same angular speed as the 6 inch pulley: 900RPM

3 0
3 years ago
Evaluate-a-function f(x) = <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B7%7D" id="TexFormula1" title="\frac{x}{7}" alt="\f
OLga [1]

Step-by-step explanation:

Hey there!

f(x) = 7/x

<em>~ Simply keep the "7" in the place where "x" is there.</em>

f(7) =  \frac{7}{7}

Therefore, X= 1.

<em><u>Hope</u></em><em><u> it</u></em><em><u> helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

3 0
2 years ago
Read 2 more answers
Help pliz Triangles ABC and DEF are similar.<br> Find the length of segment AC.
Natali5045456 [20]

Answer:

DE= 0.4

Step-by-step explanation:

8 0
3 years ago
LINEAR EQUATIONS PLZ HELP BRAINLIEST AND EXTRA POINTS!!!
Oliga [24]

Answer:


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Hope this helps you!


4 0
2 years ago
Read 2 more answers
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