find the slope of the line hurry!​

Answer:

B. 3.14

Step-by-step explanation:

Area of a circle = π r^2

Radius of coin = 1 cm

=π r^2

=π 1^2

=3.14

Answer:

The axis of symmetry for the graph of y = -2x² + 16x - 7 will be:

x = 4

Hence, the last option i.e. x = 4 is the correct option.

Step-by-step explanation:

Given the equation

[tex]y\:=\:-2x^2\:+\:16x\:-\:7[/tex]

For a parabola in standard form y = ax² + bx + c

The axis of symmetry is the vertical line that goes through the vertex x = -b/2a

so

The axis of symmetry for y = ax² + bx + c is x = -b/2a

In our case,

[tex]a=-2,\:b=16[/tex]

Therefore,

x = -16/2(-2)

x = -16 /-4

x = 16/4

x = 4

Therefore, the axis of symmetry for the graph of y = -2x² + 16x - 7 will be:

x = 4

Hence, the last option i.e. x = 4 is the correct option.

Answer:

3x+y+11=0 ans

Step-by-step explanation:

given question;(-5,4) is (x1,y1) and m=slope=-3

then, using formula

y-y1=m(x-x1)

y-4=-3(x+5)

y-4=-3x-15

3x+y+11=0 ans

Answer:

yes the number of students in the class will be multiple of 7

Answer:

Yes the number of students in the class be a multiple of 7. If im correct make me brainliest please.

Step-by-step explanation:

3 + 4 = 7

Answer:

105 children

Step-by-step explanation:

35/100×300

105

Answer:

Step-by-step explanation:

Required equation is:

The graph is attached

Possible combinations are:

Answer:

F

Step-by-step explanation:

Answer:

A. V=4 pi r^2 because it is a complete sphere

Answer:

(- 2, 15 ) and (2, 7 )

Step-by-step explanation:

Given the 2 equations

y = 3x² - 2x - 1 → (1)

2x + y = 11 → (2) ← subtract 2x from both sides

y = 11 - 2x → (3)

Substitute y = 3x² - 2x - 1 into (3)

3x² - 2x - 1 = 11 - 2x ( subtract 11 - 2x from both sides )

3x² - 12 = 0 ( add 12 to both sides )

3x² = 12 ( divide both sides by 3 )

x² = 4 ( take the square root of both sides )

x = ± [tex]\sqrt{4}[/tex] = ± 2

Substitute these values into (3) for corresponding values of y

x = - 2 : y = 11 - 2(- 2) = 11 + 4 = 15 ⇒ (- 2, 15 )

x = 2 : y = 11 - 2(2) = 11 - 4 = 7 ⇒ (2, 7 )

Answer:

The answer is: D all of the above.

Step-by-step explanation:

Answer:

A

Similar figures have corresponding angles that are congruent.

Step-by-step explanation:

Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion. In other words, similar triangles are the same shape, but not necessarily the same size. The triangles are congruent if, in addition to this, their corresponding sides are of equal length.

Answer:

$1954

Step-by-step explanation:

Given the profit function expressed as;

y=-3x^2 + 197x – 1279

The profit is at maximum when dy/dx = 0

dy/dx = -6x + 197

0 = -6x+197

6x = 197

x = 197/6

x = 32.83

substitute 32.83 into the modeled function

y=-3x^2 + 197x – 1279

y -3(32.83)²+197(32.83) - 1279

y = -3(1,078.03)+6,467.51 - 1279

y = -3,234.09+6,467.51-1279

y = 1,954.42

hence the maximum amount of profit the company can make, to the nearest dollar is $1954

Answer:

$12.49

Step-by-step explanation:

9.99 divided by .8

Answer:

It is 12.48

Step-by-step explanation:

9.99/.8

Answer: the question is not popping up. i cant see it sry

Answer:

It is B

Hope this helps!

The slope of the line that passes through the point (3, -10.5) and (7.-28.5) will be -5

The slope is the ratio of the vertical changes to the horizontal changes between two points of the line.

The slope of the line is calculated as follows:

m = Δy/Δx

Given that the line that passes through the points (3, -10.5) and (7.-28.5)

To find the slope of the line that passes through points (3, -10.5) and (7.-28.5).

Therefore, the slope of the line is;

m = Δy/Δx

m = (-28.5- 10.5)/(7 - 3)

m = -20/4

When we simplify it, then we get;

m = -5

Hence, the slope of the line is -5.

To know more about the Slope of the line here;

brainly.com/question/14511992

#SPJ2

     Since the temperature dropped 7 degrees, we will subtract 7 degrees from the original temperature given.

Write an equation to represent the situation:

37°F - 7°F = x

What was the temperature after the sun went down:

37°F - 7°F = x

30°F = x

        The temperature after the sun went down was 30°F.

Answer:

(-1) degrees

Step-by-step explanation:

∵ Temperature drop with the increase in every 1000 ft of height = 2 degrees

∴ Temperature drop in every 1 ft = [tex]\frac{2}{1000}[/tex] degrees

∴ Temperature drop in 29000 ft = [tex]\frac{2\times 29000}{1000}[/tex]

                                                      = 58 degrees

Temperature on ground = 57 degrees

Temperature at 29000 feet = 57 - 58

                                               = -1 degrees

Therefore, temperature at 29000 feet is -1 degrees.

Answer:

90x^2+134x+48

Step-by-step explanation:

To get the area of a classroom you just multiply the length times the width

Answer:

90x^2+134x+48

Step-by-step explanation:

(10x+6)*(9x+8)

=90x^2+80x+54x+48

=90x^2+134x+48

School House rock videos help, they helped me lol

Answer:

138 square units

Step-by-step explanation:

area of rectangle:  12 x 5 = 60

area of triangle:  1/2(6)(4) = 12

area of trapezoid:  1/2(6)(10 + 12) = 3(22) = 66

60 + 12 + 66 = 138

Answer:

1

Step-by-step explanation:

The length of w is 7.863 cm.

Trigonometry is the branch of mathematics that deals with particular angles' functions and how to use those functions in calculations. There are six popular trigonometric functions for an angle. Sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant are their respective names and acronyms (csc).

Given:

As, per the Sine law

a/ sin A = b / sin B

So, 7.8 / sin 78 = w / sin 76

7.8 / 0.9702 = w / 0.9781

8.0395 = w / 0.9781

w = 7.863 cm

Learn more about Sine law here:

https://brainly.com/question/17289163

#SPJ7

Answer:

769.69 (769.7 Rounded)

Step-by-step explanation:

V=πr^2h=π·7^2·5≈769.6902

Answer: With the range between each, the times it ran first was 1, and the water was 0.5. Then, the times was 2, and the water level was 1. It's adding .5 to the level of water every minute.

Time Water Runs              Level of Water

         1                                       1.5

         2                                      3.0

         3                                      4.5

         4                                      6.0

         5                                      7.5  

         6                                       9.0

         7                                       10.5

It's affected because, in the same time as the first table, the water is going up 3 times as much.

Step-by-step explanation:

Answer:

we conclude that:

[tex]x^2+6x+9>2x^2+14\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:1<x<5\:\\ \:\mathrm{Interval\:Notation:}&\:\left(1,\:5\right)\end{bmatrix}[/tex]

Hence, (1, 5) is the solution in interval notation.

Please also check the attached graph.

Step-by-step explanation:

Given the inequality expression

[tex]\left(x+3\right)^2>\:2\left(x^2+7\right)[/tex]

as

(x + 3)² = x² + 6x + 9

2(x² + 7) = 2x² + 14

so

[tex]\:x^2+6x+9\:>\:2x^2+14[/tex]

rewriting in the standard form

[tex]-x^2+6x-5>0[/tex]

Factor -x² + 6x - 5:  - (x - 1) (x - 5)

[tex]-\left(x-1\right)\left(x-5\right)>0[/tex]

Multiply both sides by -1 (reverse the inequality)

[tex]\left(-\left(x-1\right)\left(x-5\right)\right)\left(-1\right)<0\cdot \left(-1\right)[/tex]

Simplify

[tex]\left(x-1\right)\left(x-5\right)<0[/tex]

so

[tex]1<x<5[/tex]

Therefore, we conclude that:

[tex]x^2+6x+9>2x^2+14\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:1<x<5\:\\ \:\mathrm{Interval\:Notation:}&\:\left(1,\:5\right)\end{bmatrix}[/tex]

Hence, (1, 5) is the solution in interval notation.

Please also check the attached graph.

Answer:

The answer is 15 - p = k

Answer:

C , r = 6 cm

Step-by-step explanation:

Finding the circumference is really easy. You just have to multiply the radius (r) by 2 and pi. Pi is 3.14 so 3.14*2*6=37 which is bigger than the other numbers. For a question like this where it gives you different radii, you can just pick the biggest number :) hope this helps!

Answer:

C , r = 6 cm should be the answer

Step-by-step explanation:

Answer:

where are the options????

Step-by-step explanation:

if there isnt options how do we know what u mean>:

Answer:

Option (2)

Step-by-step explanation:

Formula for c the cost of a painter is,

c = 20h + 35

Here, h = hours the painter worked

If a homeowner has total amount $125 to spend on painting,

So, for c = 125,

125 = 20h + 35

(20h + 35) - 35 = 125 - 35

20h = 125 - 35

[tex]\frac{20h}{20}=\frac{(125-35)}{20}[/tex]

h = [tex]\frac{(125-35)}{20}[/tex]

Therefore, Option (2) will be the answer.