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3 years ago

14

45 percent of all customers who enter a store will make a purchase. Suppose that 6 customers enter the store and that these cust

omers make independent purchase decisions.

1 answer:

const2013 [10]3 years ago

4 0

The solution is in the attachment

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consider the function f(x) = x2 2x – 15. what are the x-intercepts of the function? left-most x-intercept: ( , 0) right-most x-i

eimsori [14]

we have

$f(x)=x^{2} +2x-15$

we know that

The x-intercept is the value of x when the value of the function is equal to zero

so

in this problem

Find the roots of the function

equate the function to zero

$x^{2} +2x-15=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$x^{2} +2x=15$

Complete the square. Remember to balance the equation by adding the same constants to each side

$x^{2} +2x+1=15+1$

$x^{2} +2x+1=16$

Rewrite as perfect squares

$(x+1)^{2}=16$

Square root both sides

$(x+1)=(+/-)\sqrt{16}$

$(x+1)=(+/-)4$

$x=-1(+/-)4$

$x1=-1+4=3$

$x2=-1-4=-5$

$x^{2} +2x-15=(x-3)(x+5)$

therefore

<u>the answer is</u>

the x-intercepts are the points $(3,0)$ and $(-5,0)$

3 0

3 years ago

Read 2 more answers

PLEASE help! Quickly please. I'll give as many points as I can!

nignag [31]

Answer:

x=55

a=11.47

Step-by-step explanation:

To find x we add all the angles in the triangle. The three angles in a triangle add to 180 degrees

35+x+90 = 180

Combine like terms

125+x=180

Subtract 125 from each side

125-125+x=180-125

x= 55

To find a

sin 35 = opposite side/ hypotenuse

sin 35 =a/20

Multiply each side by 20

20sin35 =a

11.47152873 =a

6 0

3 years ago

In one school year, the students spent a total of 840 hours in their classes. If they have EIGHT different classes, how many hou

ziro4ka [17]

Answer:

280 hours

Step-by-step explanation:

8 0

3 years ago

marissa [1.9K]

Answer:

options?.................

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2 years ago

What is the probability of rolling a 4 on a single sided die and then rolling a 6?

Rzqust [24]

Answer:

If it is a six-sided die then it has the probability of 1/6 or .16

Step-by-step explanation:

4 0

3 years ago