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3 years ago

As your confidence level increases, the value of your critical value does what??

Mathematics

1 answer:

qaws [65]3 years ago

6 0

it decreases I'm pretty sure

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7. Which of the following can be determined from the graph below?

tatyana61 [14]

Answer:

The ordered pair (6,25) is a solution to both

$y=-\frac{5}{2}x+40$ and $y=\frac{5}{3}x+15$

Step-by-step explanation:

Part 7)

step 1

Find the equation of the line with positive slope

take the points (0,15) and (9,30)

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the given values

$m=\frac{30-15}{9-0}$

$m=\frac{15}{9}$

simplify

$m=\frac{5}{3}$

Find the equation of the line in slope intercept form

$y=mx+b$

we have

$m=\frac{5}{3}$

$b=15$

substitute

$y=\frac{5}{3}x+15$

step 2

Find the equation of the line with negative slope

take the points (0,40) and (8,20)

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the given values

$m=\frac{20-40}{8-0}$

$m=-\frac{20}{8}$

simplify

$m=-\frac{5}{2}$

Find the equation of the line in slope intercept form

$y=mx+b$

we have

$m=-\frac{5}{2}$

$b=40$

substitute

$y=-\frac{5}{2}x+40$

step 3

Find the solution of the system

we know that

The solution of the system of equations is the intersection point both graphs

The intersection point is (6,25) ----> see the graph

therefore

The ordered pair (6,25) is a solution to both $y=-\frac{5}{2}x+40$ and

$y=\frac{5}{3}x+15$

7 0

4 years ago

The value of a professional basketball player's autograph rose 40% in the last year. It is now worth $364.00. What was it worth

Olin [163]

F it rose 10% that means that it is now worth 110% of what it was a year ago. So set up an equation: 297 = 110% of x297 = 1.1 x270 = x So it was worth $270 a year ago.

4 0

4 years ago

Debbie rides her bike to school every day. On Monday, she rode 1.5 miles to school in 10

Charra [1.4K]

Answer:

the second route

Step-by-step explanation:

1.5/10=0.15 miles/minute

3/15=0.2 miles/minute

0.2 is faster than 0.15

4 0

3 years ago

What is the value of x? of y? of z? Enter only the number in the boxes below.

Varvara68 [4.7K]

Answer:

y=63

x=63

z=72

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Find the LCD (least common denominator) of the pair of fractions. Do not combine the fractions; only find the LCD.

Alla [95]

12

4x3=12 and 6x2=12

8 0

3 years ago