3 years ago

Ignore the instructions if you know how to do it in a different way & please check answer!

Mathematics

1 answer:

dmitriy555 [2]3 years ago

8 0

Answer:

8ft is the diameter so the radius would be half of that, so it's 4ft. Now substitute

$\pi4 {}^{2}$

now solve 4^2=16 now multiply it by 3.14 (pi). 16×3.14= 50.24

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The parking lot had 1.5 times more trucks than cars. After 45 more cars came to the parking lot and 12 trucks left, there were 1

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11 cars were in the parking lot

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3 years ago

Match each point with one of the following rational number:

castortr0y [4]

A = -0.7
B = -9/16 (0.5623)
C = -0.4
D = -5/16 (0.3125)

The last option is correct

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3 years ago

Read 2 more answers

7. The cost of renting the party room for 10 people is $117.50. The cost of renting the room is $151.25 for 15 people. Write an

Viktor [21]

Answer:

C = 6.75n + 50

Step-by-step explanation:

The equation for the cost of renting the party room can be written in the form;

C= mn+k ......i

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n = number of people

Substituting the 2 cases into the equation we have,

Case 1

117.5 = 10m + k ......1

Case 2

151.25 = 15m + k .....2

Subtracting eqn 1 from 2 we have

151.25 - 117.50 = 15m - 10m

5m = 33.75

m = 33.75/5 = 6.75

Substituting m = 6.75 into eqn 1, we have

117.50 = 10(6.75) + k

k = 117.5 - 67.50

k = 50

Therefore, rewriting the eqn i, we have

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5 0

4 years ago

A bag contains 12 red, 30 blue, 20 green, 10 yellow, and 8 black marbles. Nancy chooses 1 marble from the bag. What is the proba

saul85 [17]

Answer:

5/8

Step-by-step explanation:

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5/8

6 0

3 years ago

Find a such that the solution of y'' + y' − 2y = 0, y(0) = a, y' (0) = 1 tends to zero as t → +∞.

Kay [80]

Answer:

Step-by-step explanation:

$y'' + y' − 2y = 0, y(0) = a, y' (0) = 1$

Auxialary equation is

$m^2+m-2=0\\m=-2,1$

General solution is

$y=Ae^{-2x} +Be^x$

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$y'(0) = -2Ae^{2x} +Be^x = -2A+B = 1$

Eliminate B to get

3A =a-1

We know that y tends to 0 when x tends to infinity for any finite A

i.e. a should be a finite real number.

8 0

3 years ago