Find 2 integers whose product is -20

Answers

Answer 1

Answer: -2 * 10 or -10 * 2 could be an answer yeah?

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Use the value of the linear correlation coefficient r to find the coefficient of determination and the percentage ofthe total variation that can be explained by the linear relationship between the two variables. r = 0.885 (x = weight of male, y = waist size of male)

Answers

Answer:

Step-by-step explanation:

The coefficient of determination = $r^(2) = 0.885^(2)$ = 0.7832

It means about 78% variation in waist size of males can be explained by their weight and about 23% can not be explained.

A pelican starts at 60 feet above sea level it descend 60 feet to catch a fish

Answers

Answer:

(+)60 - 60 = 0

Step-by-step explanation:

The pelican is now at sea level

Find the value or values of p in the quadratic equation p2+13p-30=0

Answers

This is an examination to test your level of skill. By asking this quesiton to others, you do not show your true level and maybe be placed in a higher math than you are able.

factor
remember
if ab=0
assume that a and/or b=0

p^2+13p-30=0
fidn what 2 numbers add to 13 and multiply to -30
15 and -2
(p+15)(p-2)=0

set each to zero
p+15=0
p=-15

p-2=0
p=2

the roots are p=-15 and/or 2

Solve using a Venn Diagram.Of the 154 student musicians, 72 are in marching band, 35 are in the jazz band, and 20 are in both.
A)Draw a Venn Diagram
B)How many are in neither?
C)How many play the jazz band, but not the marching band?

Answers

A. Attached with answer.

B. According to image
Students which are in neither = 154 -72 -35 + 20
= 67

C = Students who play jazz but not marching band = Students in Jazz band - Student who can do both
= 35 - 20
= 15

Solve equation 2x-5=20-x

Answers

Answer:

x = 25/3

Step-by-step explanation:

2x-5=20-x

2x-5+5=x+20+5 (add 5 both to both sides)

2x = -x + 25

2x + x = -x + x + 25 (add x to both sides)

3x = 25

3x/3 = 25/3 (divide both sides by 3)

x = 25/3

Consider the quadratic function f(x) = -x²-x+2.Determine the following: (enter all numerical answers as integers, fractions, or decimals):
The x-intercepts are
The y-intercept is
The vertex is
The line of symmetry has the equation
Give your answers as points, separated by a comma.
Give your answer as a point.

Answers

the x-intercepts are (-1, 0) and (2, 0).
the y-intercept is (0, 2).
the vertex is (-0.5, 2.25).
the line of symmetry has the equation x = -0.5.

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A number that is placed before the variable is called the constant. a) true b) false

Jessica is selling books during the summer to earn money for college. She earns a commission on each sale but has to pay for her own expenses. After a month of driving from neighborhood to neighborhood and walking door-to-door, she figures out that her weekly earnings are approximately a linear function of the number of doors she knocks on. She writes the equation of the function like this: E(x) = 20x - 50, where x is the number of doors she knocks on during the week and E(x) is her earnings for the week in dollars.What does the slope of Jessica's function represent?a. For each additional set of books she sells, her earnings will increase by $20.b. For each additional door she knocks on, her earnings will increase by $20.c. For each additional set of books she sells, her earnings will increase by $50.d. For each additional door she knocks on, her earnings will increase by $50.

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A spinner with 4 colors is spun for a total of 50 trials. Yellow was selected 10 times. What is the experimental probability of the spinner landing on yellow?