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son4ous [18]
3 years ago
7

What are the x-intercepts of the function f(x) = –2x^2 – 3x + 20?

Mathematics
1 answer:
Jet001 [13]3 years ago
5 0

Answer:

(5/2,0) and(-4,0)

Step-by-step explanation:

I hope this helps.

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A rectangular floor is 18ft long and 12 ft wide. Lamar wants to carpet the floor with carpet tiles sold by square yard. Use the
WITCHER [35]

Solution

The dimension of the rectangular floor is 18ft long and 12 ft wide

Using the conversion table

It is given that 1yd =3 ft

This shows that

12 feet will be equivalent to

\frac{12}{3}=4yd

Also 18ft will be equialent to

\frac{18}{3}=6yd

Therefore the new dimension is 6 yard by 4 yard

The area will be

A=6\times4

Therefore the required area is

A=24yd^2

5 0
1 year ago
Pierre throws a snowball up in the
erastovalidia [21]

Using the given function, it is found that the snowball traveled 4 feet when the height is 20 feet.

<h3>What is the function for the ball's height?</h3>

The height when x feet are traveled is given by:

h(x) = -0.5x² + 6x + 4.

When the height is of 20 meters, we have that h(x) = 20, hence:

20 = -0.5x² + 6x + 4.

0.5x² - 6x + 16 = 0

x² - 12x + 32 = 0

(x - 8)(x - 4) = 0

For the first time: x - 4 = 0 -> x = 4.

The snowball traveled 4 feet when the height is 20 feet.

More can be learned about functions at brainly.com/question/25537936

3 0
2 years ago
What is the value of the expression below when x<br> 3 and y = 8?<br> 6x + 10y
suter [353]

Answer:

98

Step-by-step explanation:

So we have the expression:

6x+10y

And we want to evaluate it when x is 3 and y is 8.

So, substitute:

=6(3)+10(8)

Multiply:

=18+80

Add:

=98

And we're done!

7 0
3 years ago
Read 2 more answers
to find the final cost of the shoes, the $15 coupon can be applied first and then the 20% discount, or the 20% discount can be a
guapka [62]

First apply  20% discount  then applied $15 coupon combination gives better deal.

As given in the question,

Let final cost of the shoes be $100

First apply $15 coupon  then applied 20% discount

100-15=$85

Now,  20% of 85= (20/100) × 85

                          =$17

Final price,  85 - 17 =$68

First apply  20% discount  then applied $15 coupon

Now,  20% of 100= (20/100) × 100

                          =$20

100-20 = $80

Apply coupon $15

Final price, 80 - 15 =$65

Therefore, first apply  20% discount  then applied $15 coupon combination gives better deal.

Learn more about discount here

brainly.com/question/3541148

#SPJ4

8 0
1 year ago
Question...Sleep is known to affect student grades. Kirsten is conducting a study in a local high school using two treatments on
OLga [1]

Answer:

c

Step-by-step explanation:

a third party group in which no naps occur

4 0
3 years ago
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