HELP I NEED HELP ASAP

Luke kicked a soccer ball into the air. The height, f(x), of the ball, in meters, after x seconds was modeled with the function f(x)=-4.5x^2+27x. How many seconds did it take for the soccer ball to hit the ground?

A. 40.5 seconds
B. 3 seconds
C. 6 seconds
D. 2.5 seconds

Answer:

-11 and -7

Step-by-step explanation:

-11 x -7 = 77

-11 - 7 = -18

Answer:

6.2

Step-by-step explanation:

6*6*5.1/3

Answer:

If I'm not mistaken that would be A.

Step-by-step explanation:

I haven't done this since 6th and 7th grade and I'm in 8th. I think you're supposed to multiply the base 4 times by 6 giving you 72 then multiply it by 5.1 and divide it by 2 that would give you that answer.

Answer:

1st pic: (4,1)

2nd pic: ([tex]\frac{1}{2}[/tex],2)

3rd pic: (-7.7,-1.3)

4th: second

5th: first option

Step-by-step explanation:

Hope that helps ;)

Answer:

Since 15 is greater than 8, the correct expression will be:

15 > 8

Since 4 is less than 134, the correct expression will be:

4 < 134

Since 3 is less than 5, the correct expression will be:

3 < 5

Since 351 is greater than 215, the correct expression will be:

351 > 215

Step-by-step explanation:

The greater a decimal is, the closer it is to one whole. The smaller a decimal is the farther it is from one whole. The first thing you need to look at is the digit number in each decimal. These each have two digits in them, so you can compare them right away

Answer:

3.9........................

Answer:

6

Step-by-step explanation:

Answer:

The answer is 6

Step-by-step explanation:

Answer:

30 percent increase

Step-by-step explanation:

Answer:

[tex]y = \frac{-3}{4}[/tex]

Step-by-step explanation:

[tex]\frac{y}{2} + \frac{1}{4} = \frac{y}{6}[/tex]

Lets take all the variable terms in L.H.S & all the constant terms in R.H.S.

(While taking a term from one side to another side , it's sign changes )

⇒ [tex]\frac{y}{2} - \frac{y}{6} = -\frac{1}{4}[/tex]

Now in L.H.S. , lets solve the fractions and reduce its numerator and denominator .

⇒  [tex]\frac{3y - y}{6} = -\frac{1}{4}[/tex]

⇒  [tex]\frac{2y}{6} = -\frac{1}{4}[/tex]

⇒  [tex]\frac{y}{3} = -\frac{1}{4}[/tex]

Lets multiplying 3 on both the sides .

⇒  [tex]\frac{y}{3} \times 3 = -\frac{1}{4} \times 3[/tex]

⇒  [tex]y = \frac{-3}{4}[/tex]

Answer:C

Step-by-step explanation:

Answer:

divide three from both sides to get x > 4

Answer:

No

Step-by-step explanation:

You only need to flip your sign when dividing by a negative. 3x > 12 = x > 12/3 = x > 4. If the equation were -3x > 12, then it would be x < 4.

50 yd

Answer:

its B

Step-by-step explanation well you want to get ride of the zeros and substution and see which one is stronger

Answer:

A

Step-by-step explanation:

Hello there

The coefficient correlation is set on a scale of 1 to -1

1 having the strongest correlation, 5 having an ok correlation and 0 having no correlation

.193 is closest to 0 so the correlation is very weak

Remember if the coefficient correlation is positive the it will have a positive correlation and if its negative then it will have a negative correlation

So we can conclude that the answer is A

Answer:

it is irrational because the square root is a series numbers whereas a rational number can be expressed as a fraction (recurring and terminating decimals) but irrational numbers can't be expressed as a fraction

No, the set of numbers cannot represent the sides of a triangle.

This can be proven by the Pythagorean Theorem. (a^2+b^2=c^2)

Answer:

sum of two side is greater than third one

9+11>16

20>16 true

11+16>9

true

16+9>11

true

yes whether each set of numbers could represent the sides of a triangle..

Answer:

72

Step-by-step explanation:

Substitute c = 5 into h(c) , that is

h(5) = 6(5)² - 76 - 2 = 6(25) - 78 = 150 - 78 = 72

Answer:

4.4 units

Step-by-step explanation:

The distance between the two points is 4.4 units.

Answer:

5) 3x-4x

6) 7+5x-9x

7) 16r+6-1-32r

8) 19x-1-2x

Answer:

maybe 5x*2 +18x+5 but im not sure im just guessing

Answer:

Hope this helps you, remember to underline as u go

Answer:

They will need 7 vans.

Answer:

The answer is 7 vans

Step-by-step explanation:

Divide 40/6

you get 6.6 so you just round up to 7.

The 7th bus will have less passengers but that is how many you will need for everyone to fit

Hope that helps

Answer:

40cm.

Step-by-step explanation:

40cm is the answer .

Answer:

Image 1:

1) True (Intersection is (2, 140)

2) False

3) Not sure, but I'm leaning towards F

4) True

Image 2: -4

Step-by-step explanation:

y = 50x + 40

y = 60x + 20

y = 50(6) + 40 = 340

y = 60(6) + 20 = 380

140 = 50x + 40

50x = 100

x = 2

140 = 60x + 20

60x = 120

x = 2

Image 2:

y= mx+b

y = -0.5x - 4

b is the y intercept

Answer:

9x +  441

PLS give brainliest

Answer:

Step-by-step explanation:

Answer:

g =-2

h = 2

Step-by-step explanation:

left end      middle     right end

G(g,4)          (-2,3)         (-2,h)

Answer:

father sends 7 more

Step-by-step explanation:

19-12=7

The equation representing the situation is x = 19 - 12 and the value of x is 7.

An equation is the statement of two expressions located on two sides connected with an equal to sign. The two sides of an equation is usually called as left hand side and right hand side.

Given that,

Number of text messages that your father sends a day = 19

Number of text messages that you sends a day = 12

The equation that represents how many more text messages father sends than you is,

x = 19 - 12

where, x represents the number of text messages that your father sends more.

Solving this, we get,

x = 7

Hence father send 7 more messages than you.

Learn more about Equations here :

https://brainly.com/question/29657988

#SPJ7

Your question is incomplete. The incomplete part of the question is given below.

Answer:

5 terms

Step-by-step explanation:

nth term of the sequence =n^2 + 20

an= n^2 + 20

1st term when n= 1

1^2 + 20= 20

2nd term n= 2

2^2 + 20=24

3rd term when n= 3

3^2 + 20= 29

4th term when n= 4

4^2 + 20= 36

5th term when n= 5

5^2 + 20 =45

6th term when n= 6

6^2 + 20=56

Hence, terms in the sequence are less than 50 are first 5 terms

Answer:

D

Step-by-step explanation:

14.34 x 21 - 2.40 x 7 = 284.55

Answer:

85 + y is the answer

Step-by-step explanation:

(85+y)

Answer:

4. 6 means 6 tenths and 2 means 2 hundredths

5. 115.25

6. A6:48

B. 4:45