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3 years ago

Answer please I need help it’s emergency I will mark you as brainlist ✨✨

Mathematics

2 answers:

RideAnS [48]3 years ago

8 0

Answer : D

The answer is D because in this case when they’re asking for the magnitude (size) they’re asking for the absolute value of a number, which is the distance a number is from zero.

insens350 [35]3 years ago

6 0

Answer:

I think D

Step-by-step explanation:

I'm very very sorry if I'm wrong

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The owner of a video game store creates the expression −2x2 + 24x + 174 to represent the store's weekly profit in dollars, where

Semmy [17]

Answer:

$-2(x-6)^2+246$ , x = $6

Step-by-step explanation:

The expression $-2x^2+24x+174$ to represent the store's weekly profit in dollars, where x represents the price of a new video game.

Let $f(x)=-2x^2+24x+174$

We need to rewrite this quadratic function in the vertex form.

$f(x)=-2(x^2-12x)+174$

$f(x)=-2(x^2-12x+36)--2(36)+174$

$f(x)=-2(x^2-12x+36)+72+174$

$f(x)=-2(x-6)^2+246$

The equivalent expression that reveals the video game price that produces the highest weekly profit is $-2(x-6)^2+246$

and the price is $6

6 0

3 years ago

Read 2 more answers

What is the average rate of change for the line shown in the graph

kompoz [17]

Answer:

The average rate of change is 10.

Step-by-step explanation:

Since the average rate of change is the slope of a line, you'd solve this problem by finding the slope.

First, you can start by using the $\frac{y_2-y_1}{x_2-x_1}$ method.

Plug in the points (0,10) and (1,20).

$\frac{20-10}{1-0} =\frac{10}{1} =10$

Therefore your answer is 10.

Hope this helped!

6 0

3 years ago

The basketball coach at a small local college believes that his team plays better and scores more points in front of larger crow

Orlov [11]

Answer:

Step-by-step explanation:

Given that points scored is the dependent variable Y and Number of people attending the game is the independent variable is independent variable x

The correlation coefficient, slope and intercept are calculated as shown below:

x y

378 54

350 57

320 59

478 80

451 82

250 75

489 73

451 53

410 67

215 78

113 67

250 56

450 85

489 101

472 99

Mean 371.0666667 72.4

std dev 117.5138087 15.42632259

covariance 667.5733333

r 0.394558035

Slope 3.005642934

Intercept 153.4581182

y = 3.006x+153.46 is the regression line.

Corre = 0.3945 (weak positive)

8 0

3 years ago

Pi = 3.14

mr Goodwill [35]

Area of circle= 3.14r^2
r= 4
A= 50.27

8 0

3 years ago

You have the cards numbered 1-10 in front of you.Each time you select a card,it is returned.What is the probability of selecting

Tatiana [17]

Answer:

$Both \: the \: moon \: and \: earth \: are \: in \: \\ the \: shape \: of \: spheres. \\ Surface\: area \: of \: a \: sphere \: of \: radius \: 'r' \\$

Let d1 be the diameter of the moon and d2 and be the diameter of the earth.Let r1 be the radius of the moon and r2 be the radius of the earth.

$given \: d1 = \frac{1}{4}d2 \\ = > 2r1 = \frac{1}{4} ×2r2 \\ =>r1 = \frac{1}{4}×r2 \\ Now, \: ratio \: of \: \: their \: surface \: areas \: is: \\ = s1: s2 \\ = r {1}^{2}: r {2}^{2} \\ = {1}^{2 } : {4}^{2 } \\ =1:16$

hope it helps you

8 0

3 years ago