Work out 1/2×7 write your answer mixed

−5(1−5k)−4(2k+5), I got this problem on khan academy and can't figure it out

ikadub [295]

Your answer would be 1.13 repeating or no solution.

3 0

3 years ago

Which of the following rational functions is graphed below?

kvasek [131]

Answer:

C

Step-by-step explanation:

The vertical asymptote occurs at x=6. Hence denominator of the fraction should be x-6. Hence it is C

3 0

4 years ago

Find the measure of the exterior angle 1.

Illusion [34]

Answer:

The sum of exterior angles in a polygon is always equal to 360 degrees. Therefore, for all equiangular polygons, the measure of one exterior angle is equal to 360 divided by the number of sides in the polygon. an exterior angle.

<h3>hope it's help you </h3><h3>plz mark as brain list .....!!!!!!!!!!</h3>

7 0

3 years ago

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A sixth-grade science club needs $180 to pay for the tickets to a science museum. All tickets cost the same amount. What could \

Marat540 [252]

Answer:

Two interpretations:

1. Ticket price for each student

2. Number of students

Quotient = 12

Step-by-step explanation:

Given that:

Total money to be paid for the tickets to the science museum = $180

To find:

Two interpretations, what does the expression $\large 180\div15$ represent ?

Solution:

The expression $\large 180\div15$ has two terms:

1st is 180, which is the amount of money to be paid for the tickets to the science museum.

As price of all the tickets is same, 15 might be one of the two things:

<em>1. Total Number of candidates:</em>

If 15 is the total number of candidates, then the expression $\large 180\div15$ represents the price of each ticket.

<em>2. Price of each ticket:</em>

If 15 is the price of each ticket, then the expression $\large 180\div15$ represents the Total number of candidates.

Now, let us find the quotient:

$\large 180\div15=\bold{12}$

8 0

3 years ago

A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2

Akimi4 [234]

Answer:

see below

Step-by-step explanation:

We know that we have a right triangle with x^2 + y^2 = 25^2

x^2 + y^2 =625

Taking the derivative with respect to time on each side

d/dt( x^2 + y^2) =d/dt 625

The derivative of x^2 with respect to t is 2 x times dx/dt and

the derivative of y^2 with respect to t is 2 y times dy/dt and

and the derivative of a constant is zero

2 x dx/dt + 2 y dy/dt = 0

We are trying to find dy/dt or the rate it is sliding down the wall

Subtracting 2y dy/dt

2 x dx/dt = - 2 y dy/dt

Divide each side by -2y

2x/- 2y * dx/dt = dy/dt

-x/y * dx/dt = dy/dt

We know that dx/dt = 2

If the base is 7 x^2 + y^2 =625 7^2 + y^2 = 625 so y = sqrt(625 - 49) =24

-7/24 * 2 = dy/dt

-7/12 ft/sec= dy/dt when x=7

If the base is 15 x^2 + y^2 =625 15^2 + y^2 = 625 so y = sqrt(625 - 225) =20

-15/20 * 2 = dy/dt

-3/2ft/sec= dy/dt when x=15

If the base is 24 x^2 + y^2 =625 24^2 + y^2 = 625 so y = sqrt(625 - 576) =7

-24/7 * 2 = dy/dt

-48/7 ft/sec= dy/dt when x=24

Now we need to find the rate at which the area is changing

A = 1/2 xy

Taking the derivative of each side

dA/dt =d/dt ( 1/2 xy)

Using the product rule of derivatives

= 1/2 ( x dy/dt + y dx/dt)

Using the information for 7 ft from the wall

x = 7, dy/dt = -7/12, y = 24 and dx/dt =2

= 1/2 ( 7 * -7/12 + 24*2)

= 1/2 ( -49/12+ 48)

= 527/24 ft^2/ sec

4 0

4 years ago

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Work out 1/2×7 write your answer mixed​

Work out 1/2×7 write your answer mixed