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Illusion [34]
3 years ago
14

4/5x-1/2+8/5x SIMPLIFY PLEASE

Mathematics
2 answers:
Zarrin [17]3 years ago
8 0

Answer:

  1. To simplify an equation we look for like variables, ie: 2x + 4x = 6x
  2. Now for your equarion:

4/5x -1/2 +8/5x = 12/5x -1/2

Rate positively and give brainlist

Vilka [71]3 years ago
8 0
The answer is 12/5x-1/2
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Suppose an advertising company wants to determine the current percentage of customers who read print magazines. How many custome
user100 [1]

Answer: 543

Step-by-step explanation:

Given : Level of confidence = 0.98

Significance level : \alpha=1-0.98=0.02

By using the normal distribution table,

Critical value : z_{\alpha/2}=2.33

Margin of error : E=5\%=0.05

The formula to find the population proportion if prior proportion of population is unknown  :-

n=0.25(\dfrac{z_{\alpha/2}}{E})^2

\Rightarrow n=0.25(\dfrac{2.33}{0.05})^2=542.89\approx543

Hence, the company survey minimum sample having size  =543

8 0
3 years ago
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Find the
Mazyrski [523]

Answer:

54 cm

Step-by-step explanation:

The area (A) of an equilateral triangle is

A = \frac{s^2\sqrt{3} }{4}  ( s is the side length ) then

\frac{s^2\sqrt{3} }{4} = 81\sqrt{3} ( multiply both sides by 4 to clear the fraction )

s²\sqrt{3} = 324\sqrt{3} ( divide both sides by \sqrt{3} )

s² = 324 ( take the square root of both sides )

s = \sqrt{324} = 18

Thus

perimeter = 3 × 18 = 54 cm

3 0
3 years ago
8-p=-12-3p i have to figure out what p makes and it makes no since
saul85 [17]

Answer:

1

Step-by-step explanation:

because you would just subtract all the numbers and you have the P

6 0
3 years ago
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A wheelchair ramp is 4.2 meters long. it rises up 7.0 meters. what is the angle of elevation to the nearest tenth of a degree?
Nastasia [14]
<h3>Answer: 36.9 degrees</h3>

=======================================

Work Shown:

I'm assuming your teacher meant to say the ramp is 7 meters long and the ramp rises up 4.2 meters. It doesn't make sense the way they phrased it initially since the ramp must be the longest part (it is the hypotenuse of the right triangle).

See diagram below.

The angle of elevation is the angle made between the ramp and the ground. It's the angle amount the ramp tilts upward.

sin(angle) = opposite/hypotenuse

sin(theta) = 4.2/7

sin(theta) = 0.6

theta = arcsin(0.6)

theta = 36.869897645844

theta = 36.9

Note: inverse sine or \sin^{-1} is the same as arcsine. Make sure your calculator is in degree mode.

6 0
4 years ago
Another way to write (3x1000)+(3x10)+(3x1/100)+(3x1/1000)
balu736 [363]
That'd be 3000 + 30 + 0.03 + 0.003, or 3030.033
3 0
3 years ago
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