4.
Which of the following describes the parabola with the equation y = −x2 − 3x + 6?

A. The axis of symmetry is x = −1.5 and the vertex is (−1.5, 8.25).

B. The axis of symmetry is x = 1.5 and the vertex is (1.5, 12.75).

C. The axis of symmetry is x = −1 and the vertex is (−1, −3).

D. The axis of symmetry is x = 0 and the vertex is (0, 6).

Answer:

[tex]x<-\frac{31}{2}[/tex]

Step-by-step explanation:

Answer:

Her yearly salary is $18,000 (c)

Answer:

Polynomial Degree: 6 Leading Term: 7y^6 Leading Coefficient: 7

Step-by-step explanation:

Thank me later

Answer:

m∠SVT = 79

Step-by-step explanation:

8y-33 = 5y+9

y = 14

5(14)+9 = 79

I hope this helps!

Answer:yesStep-by-step explanation:

yes

The area of the indicated region of the standard normal distribution is 0.3520.

The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

[tex]z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean,\sigma=standard\ deviation[/tex]

From the normal distribution table, the region where z < −0.38 = P(z < -0.38) = 0.3520

Find out more at: https://brainly.com/question/15016913

The ticket price that would maximize the total revenue would be $ 23.

Given that a football team charges $ 30 per ticket and averages 20,000 people per game, and each person spend an average of $ 8 on concessions, and for every drop of $ 1 in price, the attendance rises by 800 people, to determine what ticket price should the team charge to maximize total revenue, the following calculation must be performed:

Therefore, the ticket price that would maximize the total revenue would be $ 23.

Learn more in https://brainly.com/question/7271015

Answer:

Step-by-step explanation:

x - y = 8

2*y = x + 4  Reverse the equation

x + 4= 2y    Subtract 4 from both sides

x = 2y - 4

Put that value for x in the first equation

2y - 4 - y = 8        Combine like terms on the ledt

y - 4 = 8               Add 4 to both sides

y = 8 + 4

y = 12

x - y = 8

x - 12 = 8           Add 12 to both sides

x = 8 + 12

x = 20

Answer:

B- 20

D- no solutions

Step-by-step explanation:

Cuz its light work lol

Answer:

For the first question, the answer is x=20 so the answer is B

For the second I don't know, sorry :(

Step-by-step explanation:

B. 3:14

Hope that helped:)

Answer:

6

Step-by-step explanation:

mulyiplying is for finding out the area

Answer:

-9

Step-by-step explanation:

BECAUSE 4 x -9 would equal -36. If you added 10 it would then be -26 (NOT -46 because remember, this is the negatives). And there you go :]

[tex]4x+10 = -26 \\\\\implies 2x +5 = -13\\\\\implies 2x = -13 -5 = -18\\\\\implies x = -9[/tex]

Applying the steps to find the confidence interval of a proportion, it is found that the 90% confidence interval for the proportion of adult Twitter users that get at least some news on Twitter is (0.4892, 0.5356).

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the z-score that has a p-value of [tex]\frac{1+\alpha}{2}[/tex].

From a SRS of 1251 adult Twitter users, 641 of them get at least some news on Twitter, hence:

[tex]n = 1251, \pi = \frac{641}{1251} = 0.5124[/tex]

90% confidence level

So [tex]\alpha = 0.9[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.9}{2} = 0.95[/tex], so [tex]z = 1.645[/tex].  

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5124 - 1.645\sqrt{\frac{0.5124(0.4876)}{1251}} = 0.4892[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5124 + 1.645\sqrt{\frac{0.5124(0.4876)}{1251}} = 0.5356[/tex]

The 90% confidence interval for the proportion of adult Twitter users that get at least some news on Twitter is (0.4892, 0.5356).

A similar problem is given at https://brainly.com/question/16807970

Answer:

This equation is NOT proportional

Step-by-step explanation:

A proportional version of this equation would be Y=7x

Answer:

Its ASA!

Step-by-step explanation:

Answer:

C.    The relationship is linear; y + 2 = (-5/4)x - 11.25

Step-by-step explanation:

If the relationship f is linear then its graph is a line D of equation y = ax+b

(-9 ,-2)∈D ⇔ -2 = -9a + b  (1)

(-5 , -7)∈D ⇔ -7 = -5a + b (2)

(2)-(1)⇒ -5 = 4a ⇒ a = -5/4

-2 = -9a + b  ⇒ -2 = -9(-5/4) + b ⇒  2 +45/4 = -b ⇒ b = -13.25

then

D : y = (-5/4)x - 13.25 ⇒ y + 2 = (-5/4)x - 11.25

since (-1,-12) and (3,-17) are points of D (easy to check)

then it’s a linear relationship

Answer:

8

Step-by-step explanation:

You can set up a proportion to find your missing side.

Let x be the missing side.

[tex]\frac{12}{x} =\frac{18}{12}[/tex]

Cross multiply and solve for x.

144= 18x

8=x

Answer:

8 mm

Step-by-step explanation:

[tex]\frac{12}{18} = {?}{12} \\\\ 18×? = 144 \\\ ? = \frac{144}{18} \\\\ ? = 8[/tex]

I hope I've helped you.

Answer:

The answer is (5x - 3) (25x² + 15x + 9)

Step-by-step explanation:

125x³ - 27

5 × 5 × 5 × x × x × x - 3 × 3 × 3

Rewrite 125x³ as (5x)³.

(5x)³ - 27

Rewrite 27 as (3)³.

(5x)³ - (3)³

Here, Both terms are perfect cubes, factor using the difference of cube formula,

a³ - b³ = (a - b) (a² + ab + b²)

where,

a = 5x

b = 3

Now,

(5x - 3) [(5x)² + (5x)(3) + (3)²]

Now, Simplify

(5x - 3) (25x² + 15x + 9)

Thus, The answer is (5x - 3) (25x² + 15x + 9)

-TheUnknownScientist 72

Answer:

What is the smallest angle of rotational symmetry for the regular octagon?

°

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let the intensity is y and the distance is x.

Their relationship is:

Let's substitute given values and find the value of k:

Our equation becomes:

Now find the value of y when x = 4:

Answer:

  4

Step-by-step explanation:

The constant of proportionality is the coefficient of the independent variable. The constant of proportionality is 4.

Answer:

9 yards

Step-by-step explanation:

multiply the length of the cloth by the length used for bedsheet

[tex]12*\frac{3}{4}\\9 yards[/tex]

Answer:

60km/h

Step-by-step explanation:

90 ÷ 1.5

= 60

60 km/h

Answer: 0.2588

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

2q.20+4= 40q+4 not equivalent to 2q+24

Answer:

1.5 Feet

Step-by-step explanation:

Answer:

3 ft

Step-by-step explanation:

Divide 12 ft by 8 pieces.

12 ÷ 8 = 3

Answer:

NG ( first and last letter of NBG)  = WS ( first and last letter of WTS).

BG = TS

G = S

N =W or NG = WS; BG = TS; G = S; N = W.

Step-by-step explanation:

We use the congruence statement to answer these questions.  From the way the congruence statement is written, we can see that N = W (they are in the same relative position in the congruence statement).  We also see that G and S are in the same relative position, so G = S.

Since N = W and G = S, this means that NG = WS.

From the congruence statement we can also see that B = T (they are in the same relative position).  Since G = S, this means that BG = TS.

Answer:

80 4/5

Step-by-step explanation:

4 4/5 x 20 = 80 20/25 and that is also equal to - 80 4/5