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djverab [1.8K]
3 years ago
8

Solve for x: 3(x-4)=12

Mathematics
2 answers:
levacccp [35]3 years ago
7 0
The answer would be x=8
zaharov [31]3 years ago
3 0
First, do distributive property. 3 • x and 3 • -4. Now you get 3x-12=12. Now add 12 to both sides. Now you have 3x=24. Now divide by 3 to get your x alone and you answer which is 8!
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Sally begins hiking at an elevation of 224 feet. Then, she descends 131 feet and climbs 67 feet higher than her current position
Deffense [45]

Answer:

-3

Three feet below the initial elevation

Step-by-step explanation:

The initial elevation is 224 feet.

We take descent to be negative and ascent to be positive.

The numerical addition expression is

224+-131+67+-163

We simplify this to obtain:

224-131+67-163=-3

The negative sign means Sally is 3 feet below his initial elevation

5 0
3 years ago
You are purchasing an exercise machine for a physical therapy office. The machine has a 20 inch vertical space where you add wei
Zolol [24]
The maximum weight that could be held would be 32 pounds. or six five pound weights taking up 18 inches of space, and weighing 30 Lbs, and two one pound weights adding another two inches. You could achieve a greater weight if you had a weight of one-half inch, in which case you could take six 5 lb weights and 1 two  pound weight, then you could add a half inch weight bringing the weight to over 32 inches. Since we don't have a half inch weight we can't raise the weight above 32lbs.
4 0
3 years ago
Richard and Teo have a combined age of 26 . Richard is5 years older than twice​ Teo's age. How old are Richard and​ Teo?
loris [4]

Answer:Teo's age = 7 years ,Richard's age = 19 years

Step-by-step explanation:

Step 1

Let Teo's age be represented as x

Such that Richard 's age = 5 + 2x

and their combined ages equaling 26 can be expressed as

x + 5+ 2x = 26

Step 2 --- SOLVING

x + 5+ 2x = 26

3x+ 5= 26

3x= 26-5

3x= 21

x = 21/3

x = 7

Teo's age = 7 years

Richard's age = 5+2x= 5 + 14= 19 years

8 0
3 years ago
Let the universal set be the set of integers and let A = {x | x^2 ≤ 5}. Write A using the roster method.
Zarrin [17]

Answer:

Step-by-step explanation:

Given that Z the set of integers is the universal set and

A is given in set builder form.

A = {x | x^2 ≤ 5}

To convert this into roster form, we can find solutions for x

When x^2\leq 5\\|x|\leq \sqrt{5} =2.236

i.e. all integers lying between -2.236 and 2.236

The only integers satisfying this conditions are

-2,-1,0,1,2

Hence A in roster form is

A={-2,-1,0,1,2}

8 0
4 years ago
Find the intervals over which the function is increasing. I think it's B which is (-oo,-1),(-1,0) but want to make sure
Butoxors [25]
That looks correct. If your graph let's you scroll upward, double check to see if the line crosses 1 on the x axis. as long as it never touches x=1, you answer is correct
7 0
3 years ago
Read 2 more answers
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