Please help I have a D in this class.

Answer:

195 students are left-handed

Step-by-step explanation:

Here, we want to calculate the total number of students who are left-handed

Let the total number of students in the school be x

The total ratio is 8 + 3 = 11

8/11 * x = 520

8x = 11 * 520

x = (11 * 520)/8

x = 715 students

So the number of students who are left handed will be;

Total - number of right-handed students

That would be;

715-520 = 195

Answer:

0.8944

Step-by-step explanation:

We start by calculating the z-score

To calculate the z-score, we shall need the standard deviation

Mathematically, standard deviation is square root of variance

that will be; SD = √108,900 = 330

Formula for z-score is;

x-mean/SD/√n

where n is 65 in this case

z-score = (3882-3831)/330/√65 = 1.25

The probability we want to calculate is;

P( X < 1.25)

we can use the standard normal distribution table for this

Using the table;

P( X < 1.25) = 0.89435 which is 0.8944 to 4. decimal places

Answer:

0.8944

Step-by-step explanation:

Answer: $10

Step-by-step explanation:

Angie buys = 1 software package and 1month of gameplay.

Kenny buys = 1 software package and 2 months of game play.

Cost of each software package = $30. Total cost = ​$90​

The total cost is the addition of what Kenny and Angie bought. This will be:

(1 SF + 1 G) + (1 SF + 2 G) = 90

where,

SF = software package = 30

G = game

(1 SF + 1 G) + (1 SF + 2 G) = 90

30 + 1G + 30 + 2G = 90

60 + 3G = 90

3G = 90 - 60

3G = 30

G = 30/3

G = 10

One month of game play cost $10

Answer:

mars is 140 times farther than the moon

Step-by-step explanation:

hope this helped :-)

Answer:

14  hrs

Step-by-step explanation:

just keep adding up the miles till u get to 804 then u find out what half of 268 is which it is 134 then u add 804 plus 134 to get 938 then u find out how many hours that is which half 4 hours is and  2hrs

Answer:

20%

Step-by-step explanation:

% increase = (final − initial) / initial × 100%

= (30 − 25) / 25 × 100%

= 20%

Answer:

The percent gain is 25%

Step-by-step explanation:

Answer:

[tex]820.681 = 8 \times 10^2 + 2 \times 10^1 + 6 \times 10^{-1} + 8 \times 10^{-2} + 1 \times 10^{-3}[/tex]

Step-by-step explanation:

[tex]820.681 = 8 \times 100 + 2 \times 10 + 6 \times 0.1 + 8 \times 0.01 + 1 \times 0.001[/tex]

[tex]820.681 = 8 \times 10^2 + 2 \times 10^1 + 6 \times 10^{-1} + 8 \times 10^{-2} + 1 \times 10^{-3}[/tex]

Answer:

y=2x-5

Step-by-step explanation:

Answer:

1. Slope is 3/2

2. Slope is -2/3

3. Slope is 3/2

Step-by-step explanation:

Plz mark as Brainliest!

Answer:

Step-by-step explanation:

(-8-4)/(5+3)= -12/8= -3/2

perp. 2/3

y - 4 = 2/3(x + 3)

y - 4 = 2/3x + 2

y = 2/3x + 6

y - 4 = -3/2(x + 3)

y - 8/2 = -3/2x - 9/2

y = -3/2x - 1/2

Answer:

the equation: y=2/17x+3

the slope: 2/17

Step-by-step explanation:

Answer:

6x^2+11x+3

Step-by-step explanation:

Area= Length*Width

Area= (3x+1)(2x+3)

Use method FOIL (Front,Out,In,Last)

(3x*2x)+(3x*3)+(2x*1)+(3*1)

= 6x^2+9x+2x+3

Simplify:

6x^2+11x+3

Answer: =-4

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

Answer:

Well i dont know the answers but it is 13.33

Step-by-step explanation:

He can spend 13 dollars per pair of shorts

Answer:

[tex]y = \frac{1}{3}x - 5[/tex]

Step-by-step explanation:

Given

[tex]slope\ (m) = \frac{1}{3}[/tex]

[tex]y\ intercept = -5[/tex]

Required

Determine the line equation in slope intercept

The equation of a line in slope intercept is:

[tex]y = mx + b[/tex]

Where

[tex]m = slope = \frac{1}{3}[/tex]

[tex]b = y\ intercept = -5[/tex]

So, [tex]y = mx + b[/tex] becomes

[tex]y = \frac{1}{3}x - 5[/tex]

Answer:

(4-1)x2=6

Step-by-step explanation:

(4-1)x2=6

(3)X2=6

6=6

Answer:

[4 - 1] x 2 = 6

Step-by-step explanation:

Test out each possible solution.

Problem: 4 - 1 x 2 = 6

#1: [4 - 1] x 2 = 6

4 - 1 is 3.

3 x 2 is 6.

6 = 6 ✅

#2: 4 [-1 x 2] = 6

-1 x 2 is -2.

-2 [tex]\neq[/tex] 6 ❎

Therefore, #1 is correct.

Answer:

8, -2

Step-by-step explanation:

Answer:

A =  8.75 [tex]ft^{2}[/tex]

Step-by-step explanation:

Area of a table is

A = Length x Width

Given: Length=3.5ft and Width=2.5ft

A = 3.5ft x 2.5ft = 8.75 [tex]ft^{2}[/tex]

Answer:

3.225 cups

Step-by-step explanation:

1.50 cups + 0.675 cups + 1.05 cups = 3.225 cups

1.50 cups

1.05 cups

0.675 cups

3.225 cups

Answer:

Slope: 8 Y-intercept: -1

Step-by-step explanation:

This equation follows the format of y = mx + b. M would be the slope, b would be the y-intercept.

Answer:

ight A on top since it's the cmallest followed by B,C,D,E

Step-by-step explanation:

Answer:

The answer is D

The equation that can be used to determine the number of years at which the trees will be an equal height is -

14x + 12 = 16x + 2

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.

We have Sara owns a tree farm. Variety A of a pine tree is shipped to her at 12 inches tall and grows at a rate of 14 inches per year. Variety B of a pine tree is shipped to her at 2 inches tall and grows at a rate of 16 inches per year.

Variety [A] = 14x + 12

Variety [B] = 16x + 2

The equation that can be used to determine the number of years at which the trees will be an equal height is -

14x + 12 = 16x + 2

Therefore, the equation that can be used to determine the number of years at which the trees will be an equal height is -

14x + 12 = 16x + 2

To solve more questions on straight lines, visit the link below-

brainly.com/question/20400984

#SPJ5

Answer:

B

Step-by-step explanation:

Answer:

B. 3/5 x d = 345

Step-by-step explanation:

Answer:

((6 x 3 + 4/2) x 5 ) / 1

The answeris (71/5)..

Answer:

C

Step-by-step explanation:

3 divided by 2/5 will become 3 times 5/2

multiply the numerator so 15

and the denominator is 2

15/2 is 7.5

so 7 and 1/2

so your answer is C

Step-by-step explanation:

(9.16 * -30)= -27.48

(5.5 x 160)° 880

Answer:

210.00 divided by 4 = 52.5      then you would subtract 210 by 52.5 and you would get 157.5.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer: A

Step-by-step explanation:

The answer would be 44.9 yard.