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3 years ago

So confused on 30 and 31 and need to get them done!

Mathematics

2 answers:

nexus9112 [7]3 years ago

7 0

The formula for the circumference of a circle is

C=πd where d=diameter
lets plug in what we know
C=48π

Since they wanted it expressed in terms of pi, this is where you stop so the answer would be 48π

Answer=48π

31.
For this one they want you to solve for the surface area. I cant really show this as they want you to draw a picture but i will try and explain it as best i can.

So imagine the prism show was like a cardboard box, and you broke it down so that all of the sides lay flat so it looks like the picture below. Now they want you to find the area of all of those squares. so you should in the end have to of those squares be 5*7=35in² as the area, two be 7*9=63in² as the area and the last two as 5*9=45in² as the area. Good luck!

stira [4]3 years ago

5 0

For #31 you would make two squares on the left and right side and then four rectangles in the middle

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A local fast food restaurant takes in $9000 in a 4 hour period, where the amount taken in varies directly with the number of hou

Zepler [3.9K]

As per the direct variation formula, it take 11 hours : 6 minutes : 36 seconds to earn $25,000 for the restaurant.

Direct variation:

Direct Variation is said to be the relationship between two variables in which one is a constant multiple of the other.

Direct variation equation: y = kx

Given,

A local fast food restaurant takes in $9000 in a 4 hours period. Write a direct variation equation for the relationship income and number of hours.

Here we need to estimate how many hours it would take the restaurant to earn $25,000.

a) Let us consider income (I) directly varies to number of hours (h) where k is the constant of variation.

I = kh ⇒ Direct variation equation

Solve for k:

9,000 = (k)(4)

k = 9,000/4

k = 2,250

b) When income (I) = 25,000, find the number of hours:

I = kh

25,000 = (2,250) (h)

h = 25,000/2,250

h = 11.11

It will take approximately 11 hours : 6 minutes : 36 seconds for the restaurant to earn $25,000.

To know more about Direct variation here.

brainly.com/question/14254277

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4 0

10 months ago

What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4

Nataly_w [17]

Answer:

Required logarithmic function is :

$f\left(x\right)=\log_3\left(x\right)$

Step-by-step explanation:

We have been fiven that table for the logarithmic function is:

x f(x)

9 2

27 3

81 4

which can be rewritten as:

x f(x)

3^2 2

3^3 3

3^4 4

Which are basically powers of 3

So we can use logarithmic function as

$\log_3\left(9\right)=\log_3\left(3^2\right)=2\log_3\left(3\right)=2(1)=2$

Hence required logarithmic function is :

$f\left(x\right)=\log_3\left(x\right)$

8 0

2 years ago

To find amplitude, measure (blank). A. the horizontal distance between consecutive crest positions B. the horizontal distance be

Oksanka [162]

The vertical distance from a crest to the rest position ! I know I'm a little late but I just took this.

5 0

3 years ago

Read 2 more answers

Which of the following are solutions to the equation below?

DENIUS [597]

A and C could be the answer

8 0

1 year ago

Line p has an equation of y=-8x+6. Line q, which is perpendicular to line p, includes the point (2,–2). What is the equation of

Arturiano [62]

Answer:

$y = \frac{1}{8} x - 2 \frac{1}{4}$

Step-by-step explanation:

<u>Slope-intercept </u><u>form</u>

y= mx +c, where m is the slope and c is the y-intercept

Line p: y= -8x +6

slope= -8

The product of the slopes of perpendicular lines is -1. Let the slope of line q be m.

m(-8)= -1

m= -1 ÷(-8)

m= ⅛

Substitute m= ⅛ into the equation:

y= ⅛x +c

To find the value of c, substitute a pair of coordinates that the line passes through into the equation.

When x= 2, y= -2,

-2= ⅛(2) +c

$- 2 = \frac{1}{4} + c$

$c = - 2 - \frac{1}{4}$

$c = - 2 \frac{1}{4}$

Thus, the equation of line q is $y = \frac{1}{8} x - 2 \frac{1}{4}$ .

4 0

2 years ago