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garik1379 [7]
3 years ago
11

ASAPPPPPPPPPPPPPP HELPPPPPPPPPPPPPP

Mathematics
1 answer:
Liula [17]3 years ago
6 0

Step-by-step explanation:

hey it's very simple

I just solve this

and ur correct answer is 3rd option

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Sound intensity of certain Vacuum Cleaner is a random variable having a normal distribution with a mean of 75 dB and a standard
fomenos

Answer:

10 thousand times loud pls mark me as the brainliset hope it helps you

8 0
3 years ago
Haaalllppp pleaseeeeeeee
Vinil7 [7]

Answer:

A. 6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

4² - (x + 8)

x = 2

<u>Step 2: Simplify</u>

  1. Evaluate exponents:                    16 - (x + 8)
  2. Distribute negative:                      16 - x - 8
  3. Combine like terms:                     8 - x

<u>Step 3: Evaluate</u>

  1. Substitute in <em>x</em>:                    8 - 2
  2. Subtract:                              6
5 0
3 years ago
Read 2 more answers
LOL 3 more to gooo . find the value of x
garri49 [273]

Answer:

17

Step-by-step explanation:

These two angles add up to 180, so we can set up an equation. 5x-23+7x-1=180. Now we combine like variables, getting 12x-23-1=180. We add 23 to both sides, and get 12x-1=203. Then we add 1 to both sides, getting 12x=204. Finally we divide by 12 on both sides, with our result as x=17.

8 0
3 years ago
When solving a system of equations graphically, when would you need to estimate the solution? Explain
SashulF [63]

Answer:

To solve an equation means to find all the values that should satisfy the given statement. To solve an equation graphically, draw the graph for x and y of the given equation and notice where the curves cuts should be  equal.

Step-by-step explanation:

To solve an equation means to find all the values that should satisfy the given statement. To solve an equation graphically, draw the graph for x and y of the given equation and notice where the curves cuts should be  equal.

Solving system of linear equations by using graph:

A system of linear equations contains atleast two equations.For example y=5x+2 and y=x.The solution of both equations can be denoted as a ordered pair.To solve the system of linear equations we have to plot the points in the graph for both equations in coordinate system must be same.The intersection of two straight lines is the solution(point) for the given system.

8 0
3 years ago
Read 2 more answers
2.3.2: Michael Myers predicts that SAT scores predict college graduation rates in a linear fashion. U of M has an average SAT of
AleksAgata [21]

Answer:

y = \frac{5000r}{3} -50

Step-by-step explanation:

Represent the SAT score with y and the rate with r.

So, we have:

(r_1,y_1) = (90\%,1450)

(r_2,y_2) = (69.6\%,1110)

Required

Determine the equation in slope intercept form

First, we calculate the slope

m =\frac{y_2 - y_1}{r_2 - r_1}

This gives:

m =\frac{1110 - 1450}{69.6\% - 90\%}

m =\frac{-340}{-20.4\%}

Convert percentage to decimal

m =\frac{-340}{-0.204}

m =\frac{340}{0.204}

Multiply by 1000/1000

m =\frac{340*1000}{0.204*1000}

m =\frac{340000}{204}

m = \frac{5000}{3}

The equation is then calculated as:

y - y_1 = m(r - r_1)

This gives:

y - 1450 = \frac{5000}{3}(r - 90\%)

Open Bracket

y - 1450 = \frac{5000r}{3} - \frac{5000}{3}*90\%

Convert percentage to decimal

y - 1450 = \frac{5000r}{3} - \frac{5000}{3}*0.90

y - 1450 = \frac{5000r}{3} - 5000*0.30

y - 1450 = \frac{5000r}{3} - 1500

Make y the subject

y = \frac{5000r}{3} - 1500+1450

y = \frac{5000r}{3} -50

3 0
3 years ago
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