Lol there is a no way she taught us this

Answer:

1400

Step-by-step explanation:

Answer:

1400 I hope its correct

Answer:

The path of a toy rocket is defined by the relation y=-3x^2+11x+4, where x is the horizontal distance, in meters, traveled and y is the height, in metres, above the ground.

Determine the zeros of the relation.

-3x^2 + 11x + 4 = 0

---

3x^2 - 11x -4 = 0

Factor:

3x^2 - 12x + x - 4 = 0

---

3x(x-4) + x-4 = 0

---

(x-4)(3x+1) = 0

---

x = 4 or x = -1/3

============================

f(x) = -3x^2+11x+4

How far has the rocket traveled horizontally when it lands on the ground?

4 ft.

==================

What is the maximum height of the rocket above the ground, to the nearest hundredth of a meter?

---

max occurs when x = -b/2a = -11/(2*-3) = 11/6

height = f(11/6) = 14.083 ft

Answer:

B

1.09 is the improvement in scores

Step-by-step explanation:

Here is the remaining part of the question : Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The statement is true because 18 - 10 = 8 and the percentage improvement is given by the difference in the percentages of the increase and decrease. B. The statement is false because the reference values for the decrease and increase are not the same. The true improvement over the past two years is (Simplify your answer. Type an integer or decimal rounded to the nearest hundredth as needed.)

let a = scores

If scores decreased by 8% last year, scores that year was (100 - 8%) = 92% = 0.92

scores last year = 0.92a

If scores increased by 18%. It means the score this year is 0.92a x 1.18 = 1.086a

Improvement in scores 1.09

Answer:

C is the answer

Step-by-step explanation:

Answer:

C. Quadrant IV = (8,-6)

Step-by-step explanation:

Q I = + +

Q II = - +

Q III = - -

Q IV = + -

(-8, 6) = II

(-8, -6) = III

(8, -6) = IV

(8, 6) = I

Quadrant IV = (8,-6)

Answer:

97.2m/s

Step-by-step explanation:

1 km = 1,000 m

1 h = 3,600s

so

350km/h = 350*1000/3600

= 97.222 m/s

please give me brainlist if it is helpful for you

Answer:

A.  Yes; no value in the domain corresponds to more than one value of the range.

Step-by-step explanation:

There is no domain value that corresponds to more than one range value.

If you graph the ordered pairs on a coordinate plane, you cannot draw a vertical line that passes through more than one point.

Answer:

the answer is A -1/3 x

Step-by-step explanation:

hope this helps :)

Answer:

12 nickels

36 dimes

52 quarters

Step-by-step explanation:

Let x = no. of nickels

3x = no. of dimes

x + 40 = no. of quarters

5x = value of the nickels since each nickel is 5 cents

10(3x) = 30x = value of the dimes since each dime is 10 cents

25(x + 40) = 25x + 1000 = value of the quarters since each quarter is 25 cents

Now, 5x + 30x + 25x + 1000 = 1720     ($17.20 = 1720 cents)

60x + 1000 = 1720

60x = 720

x = 12 nickels

3x = 36 dimes

x + 40 = 52 quarters

Check:  12 nickels are worth $.60

36 dimes are worth $3.60

52 quarters are worth $13

.60 + 3.60 + 13 = 17.20

The original price of the racket is $30

Let the original price be x

If there is 30% off the original price, then the new price will  be 0.7x

If the price of tennis racquet is now $21, hence;

0.7x = 21

Divide both sides by 0.7

0.7x/0.7 = 21/0.7

x = 21/0.7

x = $30

Hence the original price of the racket is $30

Learn more on discount here: https://brainly.com/question/19104371

Answer:

28% = 7/25 and 158% = 79/50

Step-by-step explanation:

To convert a percent into a fraction, you have to put the value of the percent over 100.

For 28%: 28/100

28 and 100 are both divisible by 4, so the fraction reduces to 7/25.

For 158%: 158/100

158 and 100 are both divisible by 2, so the fraction reduces to 79/50.  If you teacher doesn't want you do use improper fractions, then 79/50 can further be reduced and becomes [tex]1\frac{29}{50}[/tex].

Hope this helped!

Answer:

Here you can use any!

sin x = 64/80

cos x = 48/80

tan x = 64/48

Answer:

(-1,2)

follow me

follow me

Answer:

Detailed answer in explanation.

Step-by-step explanation:

When you substitute x as 0 you'll get the y-intercept and when you do the same for y you'll get the x-intercept.

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

x-intercept(s): (12,0)

y-intercept(s): (0,−3)

[tex]y=-\frac{3}{2} x+4[/tex]

x-intercept(s): (8/3,0)

y-intercept(s): (0,4)

Now that we got these values you can plot them into the graph and start graphing the two lines. The lines will intersect at (4,-2) as shown in the graph attached.

Step-by-step explanation:

there you go that is how you solve

Answer:

x=-8

Step-by-step explanation:

    Given: 2x-14=3x-6

                    +14   +14

                     -----------

                   2x=3x+8

                   -3x -3x

                  --------------

                   -1x=8

                   ---  ---

                   -1   -1

                 -------------

                  x= -8

Hope this makes sense

Answer:

2460

Step-by-step explanation:

Hope this helps :)

Answer:

the awnser is 2460 have a nice day

Step-by-step explanation:

Answer:

answer is C=1.68

im sorry if im incorrect

mark as brainliest if i helped you :)

Step-by-step explanation:

Answer:

132 square meters

Step-by-step explanation:

You can split the shape into two figures. They both will be parellelograms.

Area of parallelogram: A=bh

11 *6=66

66 *2= 132

Answer: 132 square meters

Answer: 73

Step-by-step explanation:

Both sides are exactly the same

Answer:

45.

A=a+b/2  

2/h=7+11/2  

2·5=45

Answer:

88.2

80(1+0.05)* 2

Step-by-step explanation:

The number of birds in the park in 1997 is given by the equation A = 88.2 birds

What is exponential growth factor?

The exponential growth or decay formula is given by

x ( t ) = x₀ × ( 1 + r )ⁿ

x ( t ) is the value at time t

x₀ is the initial value at time t = 0.

r is the growth rate when r>0 or decay rate when r<0, in percent

t is the time in discrete intervals and selected time units

Given data ,

Let the number of birds in 1997 be represented as A

Now , the equation will be

The number of birds in 1995 x₀ = 80 birds

The time n = 1997 - 1995 = 2 years

The percentage of increase r = 5 %

The number of birds A is calculated by exponential growth factor ,

Substituting the values in the equation , we get

x ( t ) = x₀ × ( 1 + r )ⁿ

x ( 2 ) = 80 ( 1 + ( 5/100 ) )²

On simplifying the equation , we get

x ( 2 ) = 80 ( 1 + 0.05 )²

x ( 2 ) = 80 ( 1.05 )²

x ( 2 ) = 80 x 1.1025

x ( 2 ) = 88.2 birds

Therefore , the value of A is 88 birds

Hence , the number of birds is 88 birds

To learn more about exponential growth factor click :

https://brainly.com/question/13674608

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Answer:

I beleive  

Ordered pairs are in the form (x , y). So, my x-coordinate is 0 and my y-coordinate is 0. ... Since, -7 times 0 is equal to 0, I get 0 = 0. This is a true statement, and so (0, 0) is a solution to the equation If its incorrect I'm sorry

Step-by-step explanation:

The coordinate after a rotation of 180° counterclockwise about the origin is (0, 9).

Rotations are transformations that turn a shape around a fixed point. To rotate a shape we need: a centre of rotation. an angle of rotation (given in degrees) a direction of rotation – either clockwise or anti-clockwise.

The given coordinate is (0, -9).

Rotation rule:

Rotating a point that has the coordinates (x,y) 180° about the origin in a clockwise or counterclockwise direction, produces a point that has the coordinates (-x,-y).

Now, (0, -9) → (0, -(-9))

(0, -9) → (0, 9)

Therefore, the coordinate after a rotation of 180° counterclockwise about the origin is (0, 9).

Learn more about the rotation here:

brainly.com/question/1571997.

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Answer:

57

Step-by-step explanation:

Remember when an exponent is given and says to solve for any variable, you will plug the number in the variable ( the number given for the variable ) and first solve for exponent. Then solve the rest. Hope this helps, thank you !!

Answer:

Distributive Property

Step-by-step explanation:

4*(5+3) basically equals 4*5 + 4*3 which is 20 + 12 which is 32.

Answer:

distributive

Step-by-step explanation:

i took this test

Answer:

Step-by-step explanation:

if Juanita has 52 dollars and this sum represents 20%

the bicycle costs 52*5=260 dollars

Answer:

$78 discount off 12% you would get $68.64. That is $9.36 off

Answer:

c is your awnser

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

In this picture, the angle, 30 degrees, is a part of the whole. we are looking for the value of X.

First we can take off 45 degrees, since the angle is lower than 30 degrees

Now we can take off 15 degrees, since the angle is too small.

And we can also take off 10 degrees since its way too small.

2x mean 2 times X.

The overall measurement is a 90 degree angle, indicated by the box.

90-30= 60

30 * 2 = 60.

The correct answer is 30.

~Hope this helps~

Answer:

(-4, -8)

Step-by-step explanation:

x - 5y = 36; 2x + y = -16

first, rearrange the first equation by adding 5y to both sides to isolate x

x = 5y + 36

then plug that in for x in the second equation and solve for y:

2(5y +36) + y = -16               distribute 2 to (5y + 36)

10y + 72 + y = -16                 combine like terms by adding 10y and y

11y + 72 = -16                        subtract 72 from both sides

11y = -88                                divide both sides by 11

y = -8

next, plug y in and solve for x

x - 5(-8) = 36

x + 40 = 36                          subtract 40 from both sides

x = -4

finally, check the solution by plugging x and y into both equations to see if they equal the expected value

(-4) - 5(-8) = -1 + 40 = 36 = 36 ✓

2(-4) + (-8) = -8 -8 = -16 = -16 ✓