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2 years ago

It costs $6.45 to buy 5 songs on I-tunes. How much does it cost to buy 20 songs?

Mathematics

1 answer:

babunello [35]2 years ago

5 0

Answer:$25.80

Step-by-step explanation:

6.45/5 = 1.29

1.29 x 20 =25.80

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find two consecutive odd integers such as 65 more than the lesser is four times the greater. The lesser consecutive odd integer

Alex_Xolod [135]

Answer: Lesser = 19, Greater = 21

See picture reply.

6 0

3 years ago

Pls, can someone answer this, Explain, using words and numbers, how to subtract 7x - ( 6x + 13). Remember to include the solutio

Hitman42 [59]

So first you distribute the negative to the 6x and 13 which will flip the sign of both of them to -6x and -13 so take away the parentheses and the equation is now 7x-6x-13. You combine the x’s and you get 1x-13 or x-13

3 0

2 years ago

A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 220 feet of f

MrRa [10]

Answer:

6050 square feet

Step-by-step explanation:

Based on the diagram attached, the area which the available fencing can enclose will measure X x Y feet. As the total length of fencing available is 220 feet, the fenced perimeter must equal 220 feet

$Y + 2X = 220$

$Y = 220 - 2X$

Area of a rectangle is determined by multiplying the length of perpendicular sides:

$Area = X*Y$

$Area = X(220 - 2X)$

$Area = 220X - 2X^{2}$

The derivative of an equation determines the slope at any given point of that equation. At the maximum or minimum point of the equation, the slope will be zero. Therefore, differentiating the equation for area and equating it to zero will give the value of X where the area is maximum.

A simple variable can be differentiated using below concept:

$f(a) = a^{b}$

$f'(a) = ba^{b-1}$

Using the above concepts to differentiate Area and calculate X will give:

$Area = 220X - 2X^{2}$

$Area' = 220 - 4X = 0$

$X = 55$

Calculating Y:

$Y = 220 - 2X$

$Y = 220 - 2(55)$

$Y = 110$

Calculating Area:

$Area = X*Y$

$Area = 55*110$

$Area = 6050\sqfeet$

8 0

2 years ago

A baseball player comes up to bat 3 times during a league game. He either gets a hit or gets an out. What is the probability tha

KiRa [710]

Answer:

Since there are 2 possibilities for each bat (hit or out), the amount of total possibilities is 2 * 2 * 2 = 8. There is only one possibility out of those eight that gives us three hits, therefore the probability is 1 / 8 or 0.125.

4 0

3 years ago

I’m not sure how to do this.. can anyone help?

Pie

Answer:

m<1 =95

m<2 = 130

Step-by-step explanation:

I take it you want the size of <1 and <2?

<ABC + 95 = 180 Same straight line.

<ABC = 180 - 95 Subtract 95 from both sides.

<ABC = 85 Combine

===========================

<1 + <ABC = 180 Interior angles on the same side of the transversal = 180

<1 + 85 = 180

<1 = 180 - 85

<1 = 95

=============================

Givens

<ABC = 85

m< 1 = 95

<ADC = 50 Given

m<2 = ?

m<2 + <ABC + m<1 + 50 = 360 The four angles of a quadrilateral add to 360

m<2 + 85 + 95 + 50 = 360

m<2 + 230 = 360

m<2 = 360 - 230

m<2 = 130

5 0

3 years ago