Based on a sample survey, a principal claims that 7 out of 10 students like math. If there are 1300 students, how many would you predict do NOT like math?

Answer: $9.75.

Step-by-step explanation:

Given: Cost per stamp  = 39 cents

since 1 dollar = 100 cent , so 1 cent = 0.01 dollar

So,  Cost per stamp  = $0.39

Total stamps = 25

Cost of 25 stamps = (Cost per stamp)  x (Cost per stamp)

=$0.39 x 25

= $9.75

Hence, the price  for the sheet of stamps = $9.75.

Answer:

540

Step-by-step explanation:

Answer:

what is the question?...

Answer:

slope should be 3

Step-by-step explanation:

i used my calculator

Answer:

10/15 8/12 14/21

Step-by-step explanation:

Answer:

-14/15

Step-by-step explanation:

Answer:

??????????????

Step-by-step explanation:

I am not getting the question

Answer:

Step-by-step explanation:

4x^2-8x-5=0

The discriminant is the number under the √. In this case it's 144

Answer:

[tex]\Delta=144[/tex]

Step-by-step explanation:

For a quadratic in standard form, the discriminant is given by:

[tex]\Delta=b^2-4ac[/tex]

We have the equation:

[tex]4x^2-8x-5=0[/tex]

Hence, our a=4; b=-8; and c=-5.

Substituting into our formula, we acquire:

[tex]\Delta=(-8)^2-4(4)(-5)[/tex]

Evaluate:

[tex]\Delta=64+80[/tex]

Add:

[tex]\Delta=144[/tex]

Therefore, our discriminant is 144.

Notes:

Since our discriminant is a positive value, this tells us that our quadratic has two real roots.

Answer:

Step-by-step explanation:

y2- y1/x2-x1

-1-5/6-2

-6/8

The required slope of AB is -3/4 which passes through points  A(-2, 5) and B(6.-1).

The slope of the line is defined as the angle of the line. It is denoted by m

Slope m = (y₂ - y₁)/(x₂ -x₁ )

Assume two points on a line—Point 1 and Point 2. Point 1 has coordinates (x₁,y₁) and Point 2 has coordinates (x₂, y₂)

To determine the slope of AB: A(-2, 5) and B(6.-1)

Given,

We have been given that two points are A(-2, 5) and B(6.-1)

Let

x₁ = -2, y₁ = 5

x₂ = 6, y₂ = -1

∵ Slope m = (y₂ - y₁)/(x₂ -x₁  )

Substitute values in the formula

The slope of AB = (-1 - 5)/(6 - (-2))

The slope of AB = (-6)/(6 + 2)

The slope of AB = -6/8

Therefore, the required slope of AB is -3/4.

Learn more about the Slope of the Line here:

brainly.com/question/14511992

#SPJ2

Answer:

If I know I will defiantly answer .but where is the question

Answer:

-3/2

Step-by-step explanation:

Visualize it or write it out.

Answer:

$170

Step-by-step explanation:

15 percent of 200 is 30 and 30 minus 200 would be 170

Answer:

B and D since the table tells that the answers B and D are correct

Answer:

B. There is a y-intercept at (0,-2)

Step-by-step explanation:

I did what the other answer said, but apparently the only right answer in your case is B.

Answer:

The linear equation is;

y = 320x + 7400

Step-by-step explanation:

Here, we want to write a linear equation that represents the population y at a year since 2005

To write this, we need points

Initially, we have (0,7400)

Since the difference between 2005 and 2010 is 5, the second point will be (5,9000)

Mathematically, we can get the slope as follows;

m = (y2-y1)/(x2-x1) = (9000-7400)/(5-0) = 1,600/5 = 320

The equation of the line can be represented using the general form as;

y = mx + b

where m is 320 and b is unknown

So we have the equation as;

y = 320x + b

we need to get b

To get b, we can use any point

let us use the point (0,7400)

substituting this;

7400 = 320(0) + c

c = 7400

so the equation is;

y = 320x + 7400

Answer:

a,bcb,a

Step-by-step explanation:

Answer:

Step-by-step explanation:

Putting values

2[8(2(3)+ 3(1)]

2(8(9)

2(72)

144

Answer:

42

Step-by-step explanation:

6 to the second power is 36+6 is 42.

Answer:

I believe the answer is b

Step-by-step explanation:

I might be wrong

Answer:

A. -1

Step-by-step explanation:

ΔY/ΔX= 1/-1 =-1

Answer: 177

Step-by-step explanation:

Answer:

I THINK ITS 61

Step-by-step explanation:

Answer:

3*2+x=2

6+x=2

subtract 6 on both sides

x= -4

Step-by-step explanation:

Answer:

The number of minutes is 10minutes

Step-by-step explanation:

  Step one:

Given that the first minute of a call cost $2.30 and

each additional minute is $0.20.

let the number of minutes be x

and the total cost be y

the total cost  for the situation is modeled as

y=mx+c-----equation of a line

   Step two:

given that y=4.3, we can solve for the totals cost as

by substituting we have

4.3=0.2x+2.3

4.3-2.3=0.2x

2=0.2x

x=2/0.2

x=10

The number of minutes is 10minutes

Answer:

32

Step-by-step explanation:

54 = 2(C-5)

27 = C-5

32 = C

Answer:10$

Step-by-step explanation:37.50 - 7.50 = 30.00

Answer:

35.8

Step-by-step explanation:

                [tex]\frac{340.1}{9.5}[/tex]  = 358

 We know that our answer can never be greater than 358 since the dividend

is 340.1 and the divisor is 9.5;

  Also,

  Both values are to one decimal places and we can use this to solve the problem;

  9 can divide 340 in about 37 place with a remainder of 7,

    So, it is appropriate to make the solution 35.8

Given:

A rocket is 1.5 miles above the earth in 20 seconds.

It is 8 miles above the earth in 2 minutes.

To find:

The rockets rate of change in miles per seconds.

Solution:

Let y be the height above the earth after x seconds.

A rocket is 1.5 miles above the earth in 20 seconds. So, the point is (20,1.5).

It is 8 miles above the earth in 2 minutes.

1 minute = 60 seconds

2 minutes = 120 seconds

So, the point is (120,8).

The rockets rate of change in miles per seconds is

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m=\dfrac{8-1.5}{120-20}[/tex]

[tex]m=\dfrac{6.5}{100}[/tex]

[tex]m=0.065[/tex]

Therefore, the rockets rate of change is 0.065 miles per seconds .