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2 years ago

Who knows what pi(3.14)x-99.29?

Mathematics

2 answers:

MrMuchimi2 years ago

6 0

Answer:

Pi also appears in the calculations to determine the area of an ellipse and in finding the radius, surface area, and volume of a sphere.

Step-by-step explanation:

The number represented by pi (π) is used in calculations whenever something round (or nearly so) is involved, such as for circles, spheres, cylinders, cones, and ellipses. Its value is necessary to compute many important quantities about these shapes, such as understanding the relationship between a circle’s radius and its circumference and area (circumference=2πr; area=πr²).

Our world contains many round and near-round objects; finding the exact value of pi helps us build, manufacture, and work with them more accurately.

Digiron [165]2 years ago

3 0

Answer:

Any equation with pi cannot be solved

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What’s the ratio of 42¢ to $1.25? (Change dollars to cents)

yKpoI14uk [10]

42:125, 42/125 or 42 to 125

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3 years ago

A hairstylist schedules 1/4 hour tot trim a customer's hair and 1/6 hour to style the customer's hair. The hairstylist plans to

iragen [17]

A hairstylist schedules 1/4 hour tot trim a customer's hair and 1/6 hour to style the customer's hair.

Hours scheduled for 1 customer = trim + style the customer hair

= $\frac{1}{4} + \frac{1}{6}=\frac{10}{24} = \frac{5}{12}$

So 1 customer can be scheduled for 5/12 hours

The hairstylist plans to work $3\frac{1}{2} or \frac{7}{2}$ hours each day

We find out how many customers can be scheduled per day

$\frac{\frac{7}{2}}{\frac{5}{12}}=\frac{42}{5}$ = 8.4

Its approximately 8 appointments per day

He works for 5 days in a week

So 5 * 8 appointments = 40 appointments

40 appointments can the hairstylist schedule each week if each customer must be trimmed and styled

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3 years ago

30 is what percent of 64....

Kryger [21]

Take the 30 and divide it by 100 and you get the percent.
Ex. 30/100 = .3

Then multiply 64 by the percent.
64 x .3 = 19.20

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3 years ago

How do you do this!?!

Andrei [34K]

11x + y = 4

x | y

0 | 4

$\frac{4}{11}$ | 0

plot the y-intercept (0, 4) and the x-intercept ( $\frac{4}{11}$ , 0)

11x + y = 4

-11x -11x

y = -11x + 4 ⇒ m = $\frac{-11}{1}$ , b = 4

plot at point the y-intercept "b = 4" (0,4). plot the next point using the slope "m = $\frac{-11}{1}$ " from point (0,4), count down 11 and to the right 1 (1,-7).

Using intercepts would not provide an accurate graph because you have to estimte where ( $\frac{4}{11}$ , 0) is, so it is best to use slope-intercept form.

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x + y = -2

x | y

0 | -2

-2 | 0

plot the y-intercept (0, -2) and the x-intercept (-2, 0)

x + y = -2

-x -x

y = -x - 2 ⇒ m = $\frac{-1}{1}$ , b = -2

plot at point the y-intercept "b = -2" (0,-2). plot the next point using the slope "m = $\frac{-1}{1}$ " from point (0,-2), count down 1 and to the right 1 (1,-3).

Both methods are easy to use so either can be used.

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x - 2y = 18

x | y

0 | -9

18 | 0

plot the y-intercept (0, -9) and the x-intercept (18, 0)

x - 2y = 18

-x -x

-2y = -x + 18

$\frac{-2y}{-2} = \frac{-1}{-2}x + \frac{18}{-9}$

y = $\frac{1}{2}x$ - 9

plot at point the y-intercept "b = -9" (0,-9). plot the next point using the slope "m = $\frac{1}{2}$ " from point (0,-9), count up 1 and to the right 2 (2,-8).

Using intercepts will make a large graph since you have to plot (18,0) so it is best to use the slope-intercept form.

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3 years ago

The graph of a quadratic function is given below. What is the domain and range? *

Mashutka [201]

Answer:

Step-by-step explanation:

There are no excluded values of x in the domain of the function.

Thus domain is - ∞ < x < ∞

The range covers the permissible values of y

These are from (- 1, 16 ) downwards to - ∞

Thus range is y ≤ 16

7 0

3 years ago