Please help me out! Urgent!

Answer:

THE ANSWER IS C,TRUST ME I DID THE EWUATION

Answer:

t = 4.875 s

h(4.875) = 686.25 ft

t ≈ 11.424 s

Step-by-step explanation:

These questions are more easily answered if the equation is written in vertex form. Subtracting the constant and dividing out -16, we get ...

h(t) -306 = -16(t^2 -9.75t)

Adding the square of half the t-coefficient inside parentheses gives ...

 h(t) -306 -380.25 = -16(t^2 -9.75t +23.765625)  

 h(t) = -16(t -4.875)^2 + 686.25

This tells us the maximum height is 686.25 ft at time t = 4.875 seconds.

__

When the rock hits the ground, h(t) = 0, so ...

0 = -16(t -4.875)^2 + 686.25

686.25/16 = (t -4.875)^2 . . . . . subtract 686.25, divide by -16

√42.890625 +4.875 = t ≈ 11.424 . . . . take the square root, add 4.875

The rock hits the ground after about 11.424 seconds.

Answer:

f(0) = 1

Step-by-step explanation:

Assuming the graph is a function of x, then f(0) = 1.

Plug in 0 for x and ask yourself what is the y coordinate?

Answer:

n=8

Step-by-step explanation:

Answer:

Range of the third side of a triangle

Step-by-step explanation:

Any one side of a triangle must be shorter than the sum of the other two sides. Therefore, the third side length x must be between 5 and 35, not including those endpoints: 5 < x < 35. All whole numbers satisfying this range would form a triangle.

20 is a possible value for a third side

Answer:

-630adkn

Step-by-step explanation:

Use the commutative properly to reoder the term

(7k) and×(-81-9)

that's all and hope it can help you thanks

brainless me please

Answer: The percentage increase in the area of the circle is 16.64 % when radius is increased by 8 %.

Answer:

d = √[(a-c)^2 + (b-d)^2]

Answer:

y = (7/4)x + 0

Step-by-step explanation:

7y + 4x = 3

7y = -4x + 3

y = (-4/7)x + 3

perpendicular line:

y = (7/4)x + 0

Answer: [tex]\frac{170}{X}[/tex]+[tex]\frac{170}{X-9}[/tex]=2

(=)17 0x +170x+1530=2x²+18x

(=)-2 x² +322x+1530=0

Δ=b²-4ac

Δ=115924

[tex]\sqrt{}[/tex]Δ=340,476>0

because Δ>0 so that 2 X

=>x₁=2 (true), x₂=-161(false)

X+9= 2+9=11

first travel 2 mi/hr

second travel 11 mi/hr

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

I can't say for sure, but I am confident that is the right answer.

a) 50+b=180 (supplementary angles)

b=180-50

b=130

b) b= 43° { vertically opposite angle}

Answer:

[tex]6(2b - 4) \\ b = 5 \\ 6(2 \times 5 - 4) \\ = 6(10 - 4) \\ = 6(6) \\ = 36 \\ thank \: you[/tex]

Answer:

6(2b-4) when b = 5 is 36

Step-by-step explanation:

[tex]6(2b-4)\\6(2(5)-4)\\6(10-4)\\6(6)\\36\\[/tex]

Answer:

2⅒

Step-by-step explanation:

0.1 = 1/10

2 ⅒

Answer:

2 1/10

Step-by-step explanation:

To convert the decimal 2.1 to a fraction, just follow these steps:

Step 1: Write down the number as a fraction of one:

2.1 = 2.1

     --------    

         1

Step 2: Multiply both top and bottom by 10 for every number after the decimal point:

As we have 1 numbers after the decimal point, we multiply both numerator and denominator by 10. So,

= (2.1 × 10)

    (1 × 10)              = 21

                             ------

                               10

Now you have to simplify, 2 1/10.

Answer:

A - 226.80 B - 782.46 C. 1,178, D. 104.08

Step-by-step explanation:

hope this helps

Answer:

2/11

Step-by-step explanation:

These are division problems.

[tex] \frac{1}{2} \div 2 \frac{3}{4} [/tex]

convert 2 3/4 to an improper fraction. 4 x 2 + 3

[tex] \frac{1}{2} \div \frac{11}{4} [/tex]

keep change flip

[tex] \frac{1}{2} \times \frac{4}{11} [/tex]

cancel the 2 and 4. the 2 becomes a 1 and the 4 becomes a 2

[tex] \frac{1}{1} \times \frac{2}{11} [/tex]

multiply

[tex] \frac{2}{11} [/tex]

Answer:

x+(x+2)+(x+4)=63

Step-by-step explanation:

Answer:

19 R (remainder) 11

Step-by-step explanation:

Hope this helps! :D

Answer:

19 Remainder 11

Step-by-step explanation:

Answer:

13 hours

step by step instructions

i divided 390 by 30 hope it ok

Answer:

The repair man worked 11 hours.

Step-by-step explanation:

$390 - $60 = $330. keep in mind that she paid $60 for him to reach to her house the balance is for hours worked.

$330/$30= 11 hours

The graph of amount Tom owes his friend after a given time, t, is a straight line graph with a negative slope

Please find attached the required example of a possible graph that shows the amount Tom owes his friend

Reason:

Let A represent the amount of money Tom buys the boat with, let x

represent the amount of equal payment made and y represents the

amount Tom owes the friend after a given time, t, we have;

y = A - x·t

Therefore, the slope of the graph formed is -x, the y-intercept of the graph

is A, from which the graph that gives the amount of money, in dollars, Tom

owes his friend, as a function of time, in years can be presented as follows,

using example values;

A = $25,000 (Amount the Tom agrees to buy the boat)

x = $5,000 (Amount Tom pays each year for the boat)

By plugging in the above example values, the attached graph can be drawn using MS Excel

Learn more about plotting of straight line graphs here:

https://brainly.com/question/11097080

Answer:

6

Step-by-step explanation:

1 1 /2    ÷  1/ 4

=    3/2  ÷  1/4

= 6

Answer:

86

Step-by-step explanation:

Answer:

the answer is yes it will

Answer:

yes

Step-by-step explanation:

since (x,y) is 2,6, we can take x as 2 and y as 6. For the answer to be yes, y=3x must be equal to the x and y values. Lets plug in the values. Is (6)=3(2)?

3 times 2 is 6! So the answer is yes.

Answer:

A) Fraction to Decimal

1. 0.17

2. 0.75

3. 0.375

B) Decimal to Fraction

1. 8/100

2. 312/100

3.501/100

9514 1404 393

Answer:

  (c)  y = 3x +2

Step-by-step explanation:

The second given point is the y-intercept, telling you that the 'b' in the equation y = mx +b is 2. This eliminates the first and last choices.

Trying the other point in the two remaining equations shows you which one works:

  (b)  y = -3x +2

     -1 = -3(-1) +2 . . . . not true

  (c)  y = 3x +2

     -1 = 3(-1) +2 . . . . true

The equation of the line through the two points is ...

  y = 3x +2

_____

Additional comment

If you plot the two points, you see the line connecting them must have a positive slope. Only the third choice has a positive slope and a y-intercept of 2.

Answer:

4x+5x=0

sample question

or it can be a quadratic equation

4x^2+5x=0

solved

Answer:

63.7

Step-by-step explanation:

If you setup an equation it is this. Make sure to change 65% to a decimal by moving the decimal two places left.

[tex]n = .65 \times 98[/tex]

[tex]n = 63.7[/tex]

Answer: -6x + 18

Step-by-step explanation: multiply each expression in the brackets by -3

so, -3 x 2x = -6x and -3 x -6 will give you +18 or just 18

for a final answer of -6x + 18