GUYS PLZ HELP MATH CLASS THIS QUESTION IS WORTH 15 #)

Answer:

(a) (-1/4,0)

(b) k = (10-c)/2

Step-by-step explanation:

(a) A point passing through the y-axis is the same as finding the y-intercept.

[Move terms to right-hand side; y = mx + b form]

y = 4x + 1

[Find x, when y = 0]

0 = 4x + 1

-1 = 4x

-1/4 = x

At x = -1/4, y = 0 therefore the point: (-1/4,0) crosses the y-axis.

(b) To find the value of k in (k,10), we need to find x. Given y= 10 x=k c=constant

[Find x by plugging in known values]

Using y = 2x + c,

10 = 2k + c

10 - c = 2k

(10-c)/2 = k

Answer:

first one is -1,0

Step-by-step explanation:

i just did it

Answer:

40

Step-by-step explanation:

Emma age: yE = 10 + x   (x is timeline)

Father age: yF = A + x (x is timeline, A is Father age today)

in time x1: Emma will be A years old, and Father will be 70 years old.

yE (x1) = 10 + x1 = A

yF (x1) = A + x1 = 70

System of equations with unknown values: x1 and A.

substract equation 1 - equation 2:

10 - A = A - 70 ⇒ 80 = 2A ⇒ A = 40

So, father is 40 years old now

Emma's father is 40 years old

Let the age of Emma father be y

Age of emma = 10 years

In x years time;

If in x1 years time, Emma will be y years old and his father will be 70 years old

Emma age: yE = 10 + x   (x is timeline)

Solving both equations simultaneously;

10 - y = y - 70

10+70 = y + y

80 = 2y

2y = 80

y = 80/2

y = 40 years

Hence Emma's father is 40 years old

Learn more on simultaneous equations here: https://brainly.com/question/16863577

Answer:

The height of the seat at point B above the ground is approximately 218.5 feet

Step-by-step explanation:

The given parameters are;

The radius of the Ferris wheel, r = 125 feet

The angle between each seat, θ = 36°

The height of the Ferris wheel above the ground = 20 feet

Therefore, we have;

The height of the midline, D = The height of the Ferris wheel above the ground + The radius of the Ferris wheel

∴ The height of the midline = 20 feet + 125 feet = 145 feet

The height of the seat at point B above the ground, h = r × sin(θ) + D

By substitution, we have;

h = 125 × sin(36°) + 145 ≈ 218.5 (The answer is rounded to the nearest tenth)

The height of the seat at point B above the ground, h ≈ 218.5 feet.

9514 1404 393

Answer:

  17

Step-by-step explanation:

The remaining amount of meat is ...

  6 1/2 - 2 1/4 = 4 1/4 = 17/4 . . . pounds

The number of 1/4 pound burgers that can be made with that amount of meat is ...

  (17/4)/(1/4) = 17/1 = 17

Mr. Stokes made 17 burgers.

Answer:

of answer Is A choose 1 answer positive negative neiter positive nor negative - the sum Is zero

Step-by-step explanation:

Answer: (a - b)(a + b + 1)

a - b + a² - b²

= (a - b) + (a - b)(a + b)

= (a - b)(a + b + 1)

Step-by-step explanation:

Answer:

The length of v is 6 inches

Step-by-step explanation:

Here, we want to calculate the length of v to the nearest inch

The best way to go about this is to use the sine rule

But before we proceed, we need the measure of angle V

Mathematically, since we have a triangle

W + U + V = 180

This is the sum of angles in a triangle

56 + 117 + V = 180

V = 180-56-117

V = 7 degrees

so we proceed to use sine rule to get the length of v

Mathematically;

v/Sin V = u/Sin U

Thus;

v/sin 7 = 44/sin 117

v = 44sin 7/sin 117

v = 6.018

This is approximately 6 inches

Answer:

6

Step-by-step explanation:

Answer: 4

Step-by-step explanation:

ANSWER

3

Explanation

2+1=3

Answer:

19.9581kg

Step-by-step explanation:

Hmm almost equal to 20kg

Answer:

$7.6 ;

No, you will not be able to buy 3 more CDs

$9.5

$28.5

Step-by-step explanation:

Given that :

Cost of 4 CDs = $30.40

Cost per CD is equal

Sale price = 80% of original price

Price p per CD:

Cost of 4 CDs / number of CDs

$30.40 / 4

= $7.6

2)

No, you will not be able to buy 3 more CDs

If x = original price

80% of x = 7.6

0.8x = 7.6

x = 7.6 / 0.8

x = $9.5

$9.5 * 3 =$28. 5

Hence, $25 can't buy 3 CDs the next day (28.5 > $25)

Answer:

11>9

Step-by-step explanation:

So you can begin by plugging x=1 into the equation

3(1)+8>9

3*1=3

3+8=11

11>9

Answer:

4214

Step-by-step explanation:

four is twice the hundreds which is 2 and the tens(1) is less than two by one and 4 plus 2 plus 1 minus eleven is four

Answer:

$236 in 3 years

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

Can you post a picture of the figure?

Answer:

$8.51

Step-by-step explanation:

3.85*.5=1.925

2.25*4.25=9.5625

20-1.925-9.5625=8.5125

Rounding down, Mike will have $8.51 left over. I am not sure how your teacher likes to handle rounding.

Answer:

the answer is .3 or 3/10

Step-by-step explanation:

9514 1404 393

Answer:

  x = -1

Step-by-step explanation:

Putting the entire equation in decimal form, we have ...

  2.1x + 1.8 = 0.3x

Subtracting 0.3x gives ...

  1.8x +1.8 = 0

Dividing by 1.8, we get ...

  x + 1 = 0

So, the solution is ...

  x = -1 . . . . . . subtract 1 from both sides.

_____

Additional comment

Sometimes, when all of the numbers in the equation are divisible by the coefficient of x, it works out well to do that division before separating variables and constants. The other way this could have been solved is ...

  subtract 1.8  ⇒  1.8x = -1.8

  divide by 1.8  ⇒   x = -1

Answer:

a) $19.5

b) Next = Now + 19.5

c) y = 19.5x+24.5

Step-by-step explanation:

m=y2-y1/x2-x1

m=83-24.5/4-1

m=58.5/3

m=19.5

b) Next = Now + 19.5

c) y = 19.5x+24.5

Answer: Simple. All the things that I could possibly do.

There are many wishes that I hold and with the opportunity given to do anything for one day, who knows what I could do? But one of the most important thing that I would really like to do is to meet someone that I really have wanted to meet for so long. That's one of the things that I'd truly like to do. Another thing is to have as much fun as I can. Be able to go somewhere or to visit something, that would be really nice. of course there are more things that I'd like to do but it would just be too much to list. :)

Answer:

if i had one day to do anything...

Step-by-step explanation:

i'd travel the world go to as many places as possible i'd meet as many pple as possible i'd try as many new things as possible... i'd go sky diving, i'd get a tattoo *alotta tattoos lol* i'd learn to surf, i'd go in a hot air balloon, i'd swim with dolphins, i'd try on wedding dresses, i'd buy Chanel just to show it off, then i'd give it away to some nice less fortunate kid. i'd just do everything on my bucket list yk? thanks for the pt's mate, much appreciated, blessings, xx, nm <3 :)

Answer:

6.98

Step-by-step explanation:

The answer would be 6.98 after subtracting 8.92 from the 15.9 after applying arithmetic operation.

The study of numbers and their operations, which are relevant to all other fields of mathematics, is part of the discipline of arithmetic operations. Addition, subtraction, multiplication, and division are the basic operations that make up this system.

It is given that:

The number expression is:

= 15.9-8.92

As we know from the definition of the arithmetic operation: Addition, subtraction, multiplication, and division are the basic operations that make up this system.

In the expression subtract 8.92 from the 15.9

After applying the arithmetic operation:

= 6.98

Thus, the answer would be 6.98 after subtracting 8.92 from the 15.9 after applying the arithmetic operation.

Learn more about the arithmetic operations here,

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Answer:

Circumference - 2 * pi * r

Step-by-step explanation:

multiply radius by 2.

multiply by pi

Answer:

C=43.96 ft.

A=153.86 ft.^2

Step-by-step explanation:

for circumference, use C=2πr

for area, use A=π[tex]r^{2}[/tex]

The circumference and the area of a circle with radius 7 feet are 43.96 feet and 153.86 square feet, respectively.

A circle is a closed, two-dimensional object where every point in the plane is equally spaced from a central point. The line of reflection symmetry is formed by all lines that traverse the circle.

And the general formula of the circle,

(x – h)²+ (y - k)² = r²,

where (h, k) is the center and r is the radius of the circle.

Given:

A circle with radius 7 feet.

Then the circumference of the circle,

= 2πr

= 2(3.14)(7)

= 43.96 feet.

The area of the circle,

= πr²

= (3.14) (49)

= 153.86 square feet.

Therefore, circumference is 43.96 feet and area is 153.86 square feet.

To learn more about the circle;

https://brainly.com/question/29142813

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Answer:

Kate is 16, Bob is 12

Step-by-step explanation:

Since Kate is 4 years older than Bob, Kate's age is represented by the following equation:

B+4=K

Bob's age is just B

Now, the sum of their ages is 28, which means we add Kate's and Bob's age:

Instead of writing K+B=28, we would write the equation with the same variable:

B+4+B= 28

(B+4= Kate's age)

add like terms

2b+4=28

subtract 4 from both sides

2b=24

divide by 2

b=12

12 is Bob's age and to find Kate's age, we add 4

Kate is 16.

Hope this helps

Answer:

first answer:-1.75

second:-15.75

third:-40.25

Step-by-step explanation:i am too lazy srry

C[tex]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[/tex]

Answer:

A = -2/3

B = 8

C = -24

Line of symmetry calculation = x = -8/2*(2/3)

Line of symmetry is x = 6

Opens down

Min/man is (6,0)

Vertex is (6,0)

Domain is (-infinity, infinity)

Range is (-infinity, 0)

Answer:

Expression: [tex]\pi(\frac{D}{2})^{2}h-\pi(\frac{d}{2})^{2}h[/tex]

Volume: [tex]339.29cm^{3}[/tex]

Step-by-step explanation:

The formula for the volume of a cylinder is: [tex]\pi r^{2}h[/tex]. Since we are given the diameters instead of the radius, we divide the diameters by 2 to get the radius.

∴ The expression for the volume of the large cylinder after the hole was removed is [tex]\pi (\frac{D}{2})^{2}h - \pi(\frac{d}{2})^{2}h[/tex]

Approximate volume:

Substitute the numbers in:

[tex]\pi(\frac{8}{2})^{2}\times9-\pi(\frac{4}{2})^{2}\times9=339.29cm^{3}[/tex] (to the second decimal place)

∴ The volume of the big cylinder after removing the cylindrical hole is approximately [tex]339.29cm^{3}[/tex]