4. Find the vertex, focus, and directrix of the parabola. Sketch its graph, showing the focus and the directrix.
x^{2}=-3 y

Answer:

The mean weekly allowance is $3.5

Step-by-step explanation:

to find the average, we add up everything, and divide it by how many students there are.

0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 8, 8 <- this is what you add up

you get 84.  Then you divide this amongst all of the students.

7+5+7+3+2=24

84/24 = 3.5

Please give brainliest!

Hope this helps :)

Answer:

110 yards.

Step-by-step explanation:

30 + 40 + 40= 110 yards.

Answer:

1. is 2

2. is right and 10

Step-by-step explanation:

just took the test will explain if needed

From the triangles given, ∆ DEF was dilated to ∆ ABC

The dilated triangle is = ∆ ABC

To find the scale factor uses for the dilation of the triangle, the length of the triangle AC and DF are considered.

AC from the scale= -2 -(-7)

= 7-2= 5

DF= 9-6.5

= 2.5

Therefore the scale factor = 5/2.5 = 2

And since the scale factor of dilation is 2 this means that ∆ A' B' C' can be translated to the 0.5 by 2 units.

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Answer:

0.953703703704

Step-by-step explanation:

We have 6 × 6 × 6 = 216 possible results

You can make a table :

obtaining a sum of 18 in only one case :  (6 ,6 ,6)

obtaining  a sum of 17 in 3  cases :  (5 ,6 ,6) ; (6 ,5 ,6) ; (6 ,6 ,5)

obtaining  a sum of 16 in 6  cases :  (5 ,5 ,6) ; (6 ,5 ,5) ; (5 ,6 ,5)

                                                           (4 ,6 ,6) ; (6 ,4 ,6) ; (6 ,6 ,4)

[tex]\text{the probability that the sum is less than 16} =\frac{216-\left( 1+3+6\right) }{216} = \frac{206}{216} =0.953703703704[/tex]

Answer:

  (c)  -2/5

Step-by-step explanation:

A "zero" or "root" or "x-intercept" of a function is a value of the independent variable (x) that makes the function (f(x)) have a value of zero. It is found where the graph of the function crosses the x-axis.

A quadratic function will have two (2) zeros. If they are different, one will be smaller than the other (leftmost on the number line).

You may recognize that 25x² and 4 are both perfect squares, (5x)² and 2², respectively. That means the expression (25x² -4) is the difference of squares.

The difference of squares is a special polynomial form, useful for the way it factors:

  a² -b² = (a -b)(a +b)

Here, that means the factored form of f(x) is ...

  f(x) = (5x -2)(5x +2)

The "zero product rule" says a product can only be zero if one or more factors is zero. This is exceptionally useful for determining the zeros of a polynomial function from its factored form.

It tells us f(x) = 0 only when one of (5x-2) = 0, or (5x+2) = 0. These are simple equations to solve to find the corresponding values of x:

  5x -2 = 0   ⇒   5x = 2   ⇒   x = 2/5

  5x +2 = 0   ⇒   5x = -2   ⇒   x = -2/5

The above tells us the zeros of f(x) are -2/5 and 2/5. These values of x make f(x) = 0. The smaller zero is the one that is more negative: -2/5.

  smaller zero: -2/5

__

Additional comment

A polynomial may have complex zeros. Only the real zeros will be x-intercepts on a graph of the function. Complex zeros must be found another way, not by graphing.

Answer:

ok so 9x5 = 45 so 45 is the area and the perimeter is 9 + 9 + 9 + 9 which is = to 36

Step-by-step explanation:

Answer:

the answer is 19

Step-by-step explanation:

hence the output is 19 hope it help u

putting the value of x in rule

2x+7

2*6+7

=19

Answer:

I believe the answer is C) 200.

Step-by-step explanation:

It states that Robin did 2/3 and Rhonda. Rhonda made $195 so we time 2/3 of what Rhonda does to get Robin's pay. Then find out how much he made from the total profit he made $195 * 2/3 = $130. Robin's $130 profit made. Divide that by how much each. $130 / $0.65 = 200. Robin assemble 200.

Answer:

C)200

Step-by-step explanation:

divide 195 by .65

whats 2/3 or 300

your answer should be 200

Answer:

66 in^2

Step-by-step explanation:

Answer: 4 inches

Step-by-step explanation: 1,944 / 18/ 9 / 1/3 = 4

Based on the calculations, the height of this pyramid is equal to: D. 36 inches.

Given the following data:

Mathematically, the volume of a pyramid is calculated by using this formula:

Volume = 1/3 × b × h

Where:

For the base area, we have:

Base area = length × breadth

Base area = 18 × 9

Base area = 162 square inches.

Substituting the given parameters into the formula, we have;

1,944 = 1/3 × 162 × h

1,944 = 54h

h = 1,944/54

Height, h = 36 inches.

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Answer:

5 is the answer

Answer:

320 ft³

Step-by-step explanation:

volume = (area of base) × (height of prism)

volume = bh/2 × (height of prism)

volume = (6 2/3 × 8/2 × 12) ft³

volume = 320 ft³

Answer:320 ft³

Step-by-step explanation:

Answer:

The perimeter is 380 ft^2.

Step-by-step explanation:

To find the perimeter of a rectangle, you have to use the 2(a+b) formula as a method of solving. This formula can also be written as a+b+a+b or 2a+2b.

To solve it, you input a as 51 and 139 as b, though this doesn't really matter all too much. Using the previously stated formula, you should get 2(51+139). Solving what's in the parenthesis first (51+139), you should get 190.

Now, you should have the answer 2(190). Finishing off the equation and multiplying 2 by 190, your answer will be 380 ft^2.

Answer:

1.68% of people would want a longer day

20% of people would want more foreign languages

24.6% of people would want more science

25.8% of people would want longer lunch

27.92% randomly selected

Step-by-step explanation:

your answer would be 47

please let me know if i was wrong :)

Answer:

3/5+1/10=7/10

Step-by-step explanation:

Multiplying both sides of 3/5, we get a common denominator (6/10)

The adding the two together, we get 7/10.

Good luck! Hope this helps!

Answer:

LCD = 5  

3/5 *2 because the denominators must be equal so 6/10 + 1/10

Then the full answer is 7/10

Hope this helps!

Answer:

B.10

Step-by-step explanation:

Answer:

1. The relative frequency of heads is (A) reasonably close to 40%.

2. Mr. Clark's claim about the theoretical probability is likely to be (A) True.

3. This means that the theoretical probability of tails is most likely 0.6 for this coin.

( I also had this question before)

Answer: I think the answers are

(Q1) is A (Q2) is A and (Q3) is B

Step-by-step explanation: A for the first question because the Law of probability says: If you run a shorter trial then you get biased results but run a more extended trial you get unbiased results and his results would have to be true also the relative frequency is 0.6

PLEASE MARK AS BRAINLYEST IF YOU CAN

its either -8 or 8 im not sure which good luck tho!

Answer:

If z<7, then z-7 is negative, and |z-7| is positive.  So, with the understanding that z-7 is positive, the first part of this expression becomes:

7-z for z<7

Similarly:  if z<7, then z-9 is negative and |z-9| is positive.  Thus, -|z-9| is equivalent to (9-z).

|z−7|−|z−9|, if z<7 becomes (7-z) - (9-z) for z<7.  Simplifying this, we get:

7 - z - 9 + z = -2

Answer:

7 - z - 9 + z = -2

Answer:

The total cost of the cleaning service is $180

Step-by-step explanation:

We have, 30% × x = 54

or,

30/100 × x = 54

Multiplying both sides by 100 and dividing both sides by 30,

we have x = 54 × 100/30

x = 180

If you are using a calculator, simply enter 54×100÷30, which will give you the answer.

Answer:

1) 24 2) 65

Step-by-step explanation:

1) 40-8x when x=2

8*2=16

40-16=24

2) 65/p*3 when p=5

65/5= 13

13*5= 65

Hope this helps ^^

6) a. 40-8x

      = 40-8(2) ← [8 x 2]

      =40-16

      =24

Answer: The third one

Step-by-step explanation: 1/21(z)=42 z=882. If you  check each equation with each other the answer is correct. Also 882/21=42

Answer:

C or D

Step-by-step explanation:

its either one of those two but go woth which ever you thuink

Answer:

A

Step-by-step explanation:

Because 1 has more than one output, first they are putting 1 and 1 together, next they are putting it with 2, 1 has more than one output.

Answer:A has 2 pairs of "1" x-coordinates so it is NOT a function.

Step-by-step explanation:

Answer:

72 cm²

In order to find the surface area of rectangular prism

rectangular prism surface area: 2(LW + HW + HL)

Identify following sides:

Solve for surface area: