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wlad13 [49]
3 years ago
7

3x-4=13 solve inequality plz show work !

Mathematics
2 answers:
dimulka [17.4K]3 years ago
7 0
3x-4=13
First you want all your x's on one side, and all your ordinary numbers on the other.
Add four to both sides to get rid of the "-4" part on the left.
Your new equation is 3x = 17
Divide each side by 3 to find X.
x= 17/3 or 5 2/3
melisa1 [442]3 years ago
4 0
Hello!

First, you'd want to add 4 to each side. For example, you'll want to add 4 to 4 and 13. After you've done that the equation should now look like this

3x=17

Next, you'll need to divide each side by 3, meaning you'll divide 17 and 3 by 3. Your equation will now look like...

x=5.6 repeating (5.66666...)

Your answer will be x=5.6

I ope this helps!
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Answer:

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Step-by-step explanation:

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3 years ago
In a cave, a stalactite gets 44 millimeters longer each year. this year it is 72 centimeters long. how many years until it is 1
iragen [17]

Answer:

6.36 years (the .36 repeats), so rounded is 6.4.

Step-by-step explanation:

First, I'm going to convert all measurements to meters.

Since 1000 mm = 1 m, divide 44 by 1000.

44/1000 = 0.044 m

Since 100 cm = 1 m, divide 72 by 100.

72/100 = 0.72 m

Next, I'm going to setup an equation using y = mx + b.

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1 = 0.044x + 0.72

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2 years ago
If 2a - b = 4 , find a.
julia-pushkina [17]
<h2>Answer:  a = ¹/₂ (4 + b)</h2>

<h3>Step-by-step explanation:</h3>

To solve for 'a' we have to make it the subject of the equation. Since there are two unknowns ('a' & 'b'), we won't get a numerical value of 'a', but an expression in terms of the second unknown 'b'.

Since 2a - b = 4                    <em> [add 'b' to both sides]</em>

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3 years ago
Given f(x) = 10 -2xfind f(7). –4 3 7 56
strojnjashka [21]

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Step-by-step explanation:

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f(x)=10-2x

2. Then, to find f(7) asked in the exercise, you only need to substitute x=7 (which is the input value) into the given function.

3. Therefore, keeping the above on mind, you obtain that f(7) is:

x=7

f(7)=10-2(7)

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3 years ago
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term

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