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siniylev [52]
3 years ago
6

3+2x=15 solve for x.

Mathematics
1 answer:
JulijaS [17]3 years ago
6 0
3 + 2x = 15
2x = 15-3
2x = 12
x = 12/2
x= 6
Not sure is it’s right:)!
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Easiest way to calculate 22% mark up from a cost of say 39.99
satela [25.4K]

Answer:

The markup amount on the cost 39.99 $ will be: 8.78 $

Step-by-step explanation:

Given

  • The cost = 39.99 (Let say in $)
  • Mark up = 22%

As

22% = 0.22

The markup of 22% on the cost can be calculated by multiplying the cost by 22% or 0.22

so

Markup amount = 0.22 × 39.99

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Therefore, the markup amount on the cost 39.99 $ will be: 8.78 $

6 0
3 years ago
A 13.5-meter ladder leans against a brick wall and the ladder makes a 75∘ with the wall. The distance d the ladder goes up the w
Alex73 [517]

Answer:

3.5 m

Step-by-step explanation:

Use Pythagorean theorem to find the distance (d) the distance goes up the wall = adjacent to the angle 75° that is formed with the wall.

Length of ladder = the hypothenuse = 13.5 m

Thus, we would use:

Cos75 = adjacent/hypothenuse

Cos 75 = d/13.5

Multiply both sides by 13.5

13.5*cos(75) = d

13.5*0.2588 = d

3.4938 = d

d ≈ 3.5 m (nearest tenth)

3 0
4 years ago
Evaluate -4a + 10 when a = -2
stiks02 [169]

Answer:

<u>18</u>

Step-by-step explanation:

<em>replace a with -2</em>

-4(-2) + 10

<em>multiply the -4 and the -2, the negatives cancel out and leave you with 8</em>

8 +10

<em>just add</em>

18

4 0
3 years ago
13 divided by $85.02
Salsk061 [2.6K]
The answer is 0.15290519877
6 0
3 years ago
Read 2 more answers
What is this answer??
Gala2k [10]

Answer:

4/5

Step-by-step explanation:

0.80=80/100=40/50=4/5

5 0
3 years ago
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