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Mademuasel [1]
3 years ago
5

Me ajudem por favor: 3x+30=80

Mathematics
1 answer:
Paha777 [63]3 years ago
7 0

0.06 es la repuesta

Step-by-step explanation:

Aqui esta como lo podias aser:

1. 3x + 30=80

-30. -30

3x=50

÷3. ÷3

Necesitas que divinir 50 en 3

3(0.06) + 30=80 x=0.06

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3 years ago
What is the range of the function y = x??<br> all real numbers<br> X30<br> Oy0
lara31 [8.8K]

Answer:

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3 0
3 years ago
Can someone please take there time to do this every time I asked it’s wrong
prisoha [69]

Answer:

5/3x - y = 5

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Standard Form: Ax + By = C

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from graph.</em>

x-int (3, 0)

y-int (0, -5)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{-5-0}{0-3}
  2. Subtract:                       m=\frac{-5}{-3}
  3. Simplify:                        m=\frac{5}{3}

<u>Step 3: Write Slope-Intercept Form</u>

y = 5/3x - 5

<u>Step 4: Find Standard Form</u>

  1. Subtract 5/3x on both sides:          -5/3x + y = -5
  2. Multiply both sides by -1:                5/3x - y = 5

And we have our answer!

8 0
3 years ago
The following table contains the probability distribution for the number of traffic accidents daily in a small city:
8_murik_8 [283]

Answer:

a) 2 accidents per day

b) .7071 accidents

Step-by-step explanation:

a) The mean is the sum of each possible number of accidents multiplied by its respective probability. So,

E(x) = (0)(.1) + (1)(.2) + (2)(.45) + (3)(.15) + (4)(.05) + (5)(.05) = 2

b) The variance V(x) = E(x^2) - E(x)^2, and the standard deviation is the square root of the variance. So,

V(x) = E(x^2) - (2)^2

= (0)(.1) + (1)(.2) + (4)(.45) + (9)(105) + (16)(.05) + (25)(.05) - 4 = 0.5

sqrt(0.5) = .7071

8 0
3 years ago
How would you turn 3/4 into a decimal?
vampirchik [111]
The answer for the decimal is .75...................
3 0
3 years ago
Read 2 more answers
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