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3 years ago

Please look below for the question :)

Mathematics

2 answers:

Serjik [45]3 years ago

8 0

Answer:

$59.50

Step-by-step explanation:

Lets work out the equation for the given relationship.

This is a linear relationship.

Find the slope first:

(21.75 - 19.50)/(3 - 2) = 2.25

Use one pair of points to get the equation:

c - 19.50 = 2.25(m - 2)
c - 19.50 = 2.25m - 4.50
c = 2.25m + 15

We see the yearly fee is $15 and monthly rate is $2.25.

If we apply the changes to rates the equation becomes:

c = (2.25*2)m + (15 - 5) = 4.5m + 10

Find the cost of 11 months of membership:

c = 11*4.5 + 10 = $59.50

rewona [7]3 years ago

5 0

Answer:

well i think its over 103.10 because 11 months divide 2 fraction then take 1 carry or instead use calculator and type 0077239812 this binary!! and divide by 23 and thats the answer its only like decimals from the point!!

Step-by-step explanation:

Does this help?

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If a coin is flipped 76 times how many times will it land on heads

MatroZZZ [7]

Answer:

Step-by-step explanation:

Roughly 38 since there is only 2 sides of a coin.

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3 years ago

Why do you have to show work for math

Anton [14]

One of the main reasons you have to show work for math is because your teacher needs to know that you understand the concept. Also, showing work helps your teacher know that you didn't cheat using an online calculator that just gives you an answer.

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4 years ago

Read 2 more answers

Two cars are 400 km apart. One car is traveling at 55 km/h and the other car is traveling at 45 km/h. If they start at the same

Alja [10]

Answer:

Two cars are 400 km apart. One car is traveling at 55 km/h, and the other cars are traveling at 45 km/h; if they start at the same time and are driving toward each other, the two cars will meet after 4 hours.

Solution:

Let the two-car be A and B.

Given that two cars are 400 km apart.

Let us assume The distance traveled by A to meet B = x km.

The distance traveled by B can be found by subtracting the total distance x from a length is traveled by A.

So distance travelled by B = (400-x) km

Time taken will be the same for A and B

We know that, we get

Let us consider the time taken by car. So time is taken by A to travel x km =

Similarly, time is taken by B to travel distance (400-x) km =

When the two cars meet, .hence we get,

On solving above equation,

9x = 11(400 – x)

9x = 4400 – 11x

9x + 11x = 4400

20x = 4400

X = 220

After 220 km of travel, the car with a speed of 55 km will meet other cars traveling at a rate of 45 km. Now the time taken for two cars to meet each other is given as,

Time is taken for cars to meet =

Hence the two cars will meet after 4 hours.

Step-by-step explanation:

4 0

3 years ago

The area of a triangle is 13 square feet. If the base of the triangle measures 4 feet, what is its height?

VashaNatasha [74]

The area of a triangle is 1/2 base X height. So, 1/2 4 X h = 2h
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3 years ago

Read 2 more answers

For the curve with equation y = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" id="TexFormula1" title="x^{2}" alt="x^{2}" align=

bixtya [17]

Answer:

Below.

Step-by-step explanation:

a) First we find the derivative of the function, which gives us the gradient in terms of x:-

y = x^2 + 4x + 3

Gradient at x = dy/dx = 2x + 4.

When the curve cuts the x-axis, y = 0:

x^2 + 4x + 3 = 0

(x + 1)(x + 3) = 0

so x = -1 and -3 where the curve cuts the x axis.

The gradients at these point are therefore:

At x = -1 gradient = 2(-1) + 4 = 2

at x = -3 gradient = 2(-3) + 4 = -2.

b) (i) Where the tangent is parallel to x axis the gradient = 0

so 2x + 4 = 0 giving x = -2.

We now need to substitute x = -2 into the original function to find the y coordinate.

So the coordinates are (-2, (-2)^2 + 4(-2) +3))

= (-2, -1)

(ii) First find the slope of the line 6x + 3y = 7:

3y = -6x + 7

y = -2x + 7/3.

So the slope is -2.

Thus -2 = 2x + 4

2x = -6

x = -3

So the coordinates are (-3, (-3)^2 + 4(-3) + 3)

= (-3, 0).

7 0

3 years ago