y=1/20x^2
The directrix of the parabola is:
x=-5
x=5
y=-5

Answer:

Step-by-step explanation:

The discriminant of this equation, i.e, D=\(b^{2}-4ac\) is less than 0:

D= 0-(4*2*18)   --> which is clearly negative

When D is less than 0, the equation has no real number solutions.

Therefore, \(2x^{2}+18=0\) has no real roots

Answer:

Step-by-step explanation:

0 has no roots so thats one, and im just trying to complete a challenge so sorry if im wrong :( but make other person brainliest they did good job :)

Answer:

x= 76º z=97º y= 19º

Step-by-step explanation:

subtract 12:56 from 8:01 to get 4:55. That’s 4 hours and 55 minutes

thats in hours! if it was minutes it would be 4 minutes and 55 seconds

Answer:

Im not sure

Step-by-step explanation:

:(

Answer:

The answer is 144

Answer: 65.94 m^3

Step-by-step explanation:

The volume of a cone is \(\pi * r^2*h/3\)

\(\pi = (3.14) || r^2 = (3^2)||h/3 = (7/3)\)

Step 1. Simplify the expression.  \(3.14 * 9*7/3\)

Step 2. Multiply 9 * 3.14. \(28.26 * 7/3\)

Step 3. Finish simplifying. \(28.26 * 7/3 = 65.94\)

Answer:: 65.94 m^3

Step-by-step explanation:

Answer:

1, 2, 3, 4, 5, 6, 7, 8, and 9.

Step-by-step explanation:

Answer:

180 - (67+52)=x

Step-by-step explanation:

I just know if that is not the answer look for something that gets the same answer

Answer: The group which receives no physical therapy would best be described as the Control Group.

In an experimental study, the control group is a group of participants who do not receive the treatment being tested. They are used as a basis for comparison to evaluate the effectiveness of the treatment. In this case, the researchers are testing whether the new physical therapy reduces the recovery time for patients who underwent surgery for a torn ACL. The control group allows the researchers to compare the recovery time of patients who received no physical therapy to those who received either traditional or experimental physical therapy.

Step-by-step explanation:

Answer:

The answer is D.

Step-by-step explanation:

If you multiply 2/3 by 2 you get 4/3 and if you simplify you get 1 1/3. Hope this helps! Have an amazing day!

Answer:

12

Step-by-step explanation:

1/3 tbsp flakes = 4 tbsp sesame

x3                 x3

1 tbsp flakes = 12 tbsp sesame

Answer:

1. 18 cm sq

2. 140 in sq

3. sorry i don't know

4. 320 in sq

Answer:

6X is a term

3 is a term

y is a term

2 is a term

(y - 2) is an equation

each number or letter are terms

Answer:

Option B. 7/11

Step-by-step explanation:

The following data were obtained from the question:

Sin x = 7/11

Cos(90 – x) =..?

The value of Cos(90 – x) can simply be obtained as follow:

Recall:

Sin x = Cos(90 – x)

Sin x = 7/11

7/11 = Cos(90 – x)

Therefore, the value of Cos(90 – x) is simply 7/11.

Answer:

5 cm

Step-by-step explanation:

9 - 4 = 5

the 9 is on the bottom line and the very top has a 4 so u just have to subtract

i hope this helps! have a wonderful rest of ur day :)

could u pls mark me as brainliest, i only need 1 more today and then ill rank up, if not then its ok! ty and let me know if you need anything else!!

Answer:

  (d)

Step-by-step explanation:

You want to identify the stem and leaf plot for the 16 scores listed. Their minimum is 0.

A typical stem and leaf plot lists the number of tens in a value at the left margin (the stem), then units digits (in order, least to greatest) of the values with that number of tens.

For example, the scores 0 and 5 both have 0 tens, so would be plotted as ...

  0 | 0 5

where the leftmost 0 is the "stem" and the right two digits, 0 and 5, are the "leaves".

The plot will have as many leaves as there are values in the data set.

The two scores less than 10 are 0 and 5, so the first line of the stem-and-leaf plot will be ...

  0 | 0 5 . . . . . . . . . eliminates choices B and C

There are 16 scores in the data set, so the plot will have a total of 16 leaves. (eliminates choice A).

The correct stem-and-leaf plot is choice D:

0 | 0 5

1 | 1 5 5 5

2 | 0 0 0 0 3 6

3 | 1 4 9 9

Key 1|1 = 11

Answer:

1. 9, 4

2. 46, 10

3. 18, 14

4. 10, 14

5. 17, 32

6. 5, 7

7. 3, 70

8. 3, 20, 10

9. 7, 16

10. 7, 5

11. 9, 120

12. 12, 1

Step-by-step explanation:

Definition of coefficient. Your welcome :)

Answer:

shade all numbers less than 6

shade all numbers to the left of 6

Step-by-step explanation:

i believe this is the answer because if you graph x<6, you can see that the shaded area is to the left of 6 (numbers less than 6).
Desmos graphing calculator helps

Answer:

3, & 6

Step-by-step explanation:

Answer: the next one is a triangle with a  square inside

i think

Answer:

You will run out of iced tea in 3 days (a total of 3 mornings and 3 evenings)

Step-by-step explanation:

Day 1 - 9.5 cups left

 14.25 - 2.5 - 2.25 = 9.5

Day 2 - 4.75 cups left

 9.5 - 2.5 - 2.25 = 4.75

Day 3 - 0 cup left

 4.75 - 2.5 - 2.25 = 0

Answer: You will run out of iced tea in 3 days

Step-by-step explanation:

2.5 + 2.25 = 4.75

14.25/4.75 = 3

Answer: -36 feet

Step-by-step explanation:

72-18 = 54 feet ascended

54 feet / 3 ascents = 18 feet per ascent

18 feet * 2 ascents = 36 feet

-72+ 36 = -36 feet

Answer:

A) 6

Step-by-step explanation:

\(y-x=2y+1\\y-(-7)=2y+1\\y+7=2y+1\\7=y+1\\6=y\)

The output is y=6 when the input is x=-7

Answer: The answer is 11 feet.

Answer:

the one which is not a proportional relationship is y=x

Answer:

Same Side interior

Step-by-step explanation:

Just trust me

Answer:

same-side interior

Step-by-step explanation:

If a transversal intersects two parallel lines, then same-side interior angles are supplementary.

The function for the points are  y = -15x - 5

From the information given, we have that;

The points are;

(1/3,0) (-2 3/4,0) and (0,-5)

Using the point-slope form of a linear equation, we have;

y - y₁ = m(x - x₁)

Such that;

Using (1/3, 0) and (0, -5), we have that the slope is;

m = (0 - (-5))/0 -1/3)

expand the bracket

= 5 / (-1/3)

= -15

Now, take any of the given points and substitute the values

Using (1/3, 0), we get;

y - 0 = -15(x - 1/3).

y = -15x - 5.

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The function for the points solved by  (1/3,0) (-2 3/4,0) and (0,-5) solved by point slope form is \(a=-15b-5\)

We have given the points:

(1/3,0) (-2 3/4,0) and (0,-5)

Using the formula of linear equation

\(a-\)\(a_{1}\)\(=x[b-b_{1}]\)                                                          

Where we will consider (1/3,0) = \(a-a_{1}\) and (0,-5) = \(b-b_{1}\)

that is 1/3 = \(a\), 0 = \(a_{1}\) and

0 = \(b\), -5 = \(b_{1}\)

\(x\) refers to the slope of line (take any variable)

Now for finding the value of \(x\),

\(x=a-a_{1}/b-b_{1}\)

inserting the values,

\(x=[0-[-5]]/[0-1/3]\\x= -15\)

Substitute the value of \(x\) in the equation

\(a-0=-15[b-1/3]\)

By simplifying the equation, we get

\(a=-15b-5\)

To know more about functions and points:

https://brainly.com/question/30721594