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Papessa [141]
3 years ago
12

Help please

Mathematics
2 answers:
ratelena [41]3 years ago
6 0

Answer:

14 * 9(-9) - 8 = 1142               9 - 45(-3) + 7 = 151

Step-by-step explanation:

14 * 9(-9) - 8 = 1142               9 - 45(-3) + 7 = 151

(This one is true)                  (This one is false)

WINSTONCH [101]3 years ago
5 0

Answer:

57+20= 90 (false)

40+39= 79 (true)

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The electric-vehicle manufacturing company Tesla estimates that a driver who commutes miles per day in a Model S will require a
saul85 [17]

Answer:

Following are the solution to the given points:

Step-by-step explanation:

Please find the complete question in the attached file.

In this question, we assume that "x" denotes as  an actual time of the  battery charging, that is a uniform random variable that x \sim U(90, 120)

 In point a:

so, pdf of x =

\to f(x)= \frac{1}{120-90}  = \frac{1}{30} \\\\\to 90 < x

In point b:

To find

\to P(x

In point c:

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In point d:

\to P(95< x< 110)

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6 0
3 years ago
Solve problem y+7=-9​
Delvig [45]

Answer:  -16

Step-by-step explanation:

y + 7 = -9

-9 - 7 = -16

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8 0
4 years ago
What is the slope of a line perpendicular to the line whose equation is
Amanda [17]

Answer:

\frac{3}{2}

Step-by-step explanation:

To find the slope of the perpendicular line, we must first find the slope of the given line.

This can be done by rearranging the equation into the slope intercept form.

2x +3y= -3

3y= -2x -3

y= -⅔x -1

Thus, the slope of the given line is -⅔.

The slope of the perpendicular line is the negative reciprocal of the given line.

Slope of perpendicular line =  \frac{3}{2}

What is slope-intercept form?

  • y= mx +c, where m is the slope and c is the y-intercept
  • This can be achieved by making y the subject of formula

Negative reciprocal

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  • The negative reciprocal of m is -  \frac{1}{m}

Negative reciprocal of -⅔

=  - 1 \div  ( - \frac{2}{3} )

=  - 1 \times ( -  \frac{3}{2} )

=  \frac{3}{2}

5 0
3 years ago
Students measured the height of bean plants for science project. These are the heights they measured in inches.
ANTONII [103]

Answer:

5

Step-by-step explanation:

start by putting them in order by value of least to greatest

4, 4, 4, 5, 7, 9, 9

median is the number that is the middle, in this case 5, if there are two middle numbers, you find the average of the two middle numbers.

5 0
4 years ago
Students are selling muffins at a school bake sale. One muffin cost $0.25, 2 muffins cost $0.37, 2 muffins cost $0.49, and 4 muf
gladu [14]
I hope this helps you

8 0
3 years ago
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