Sharon has a new beaded necklace. 72 out of the 80 beads on the necklace are blue. Whatpercentage of beads on Sharon's necklace are blue?
Write your answer using a percent sign (%).

Answers

Answer 1
Answer:

Answer:

90%

Step-by-step explanation:

Step 1:

72/80 = x /100         Proportion

Step 2:

80x = 7200        Multiply

Step 3:

x = 7200 ÷ 80       Divide

Answer:

90%

Hope This Helps :)

Answer 2
Answer:

Answer:

Sharon bought a necklace with 90% blue beads.

Step-by-step explanation:

We are given that Sharon's necklace has 80 beads. We are also given that of those 80 beads, 72 of them are blue.

Therefore, we can set up a ratio of blue beads to total beads in order to find out the relationship.

\displaystyle (72)/(80)=(36)/(40)=(18)/(20)=(9)/(10)

Then, using the fraction we receive as a result, we can convert this to a decimal.

\displaystyle (9)/(10) = 0.9

After we complete this calculation, we can multiply our decimal by 100 in order to obtain the relationship in percentage form.

0.9 * 100 = 90\%

Of the 80 beads, 90% were blue beads.


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The Richter Scale gives a mathematical model for the magnitude of an earthquake in terms of the ratio of the amplitude of an earthquake wave (also known as the intensity of an earthquake) to the amplitude of the smallest detectable wave. If we denote the magnitude of the earthquake by R, the intensity (also known as the amplitude of the earthquake wave) of the earthquake by A, and the amplitude of the smallest detectable wave by S, then we can model these values by the formula R=log(AS)
In 1906, San Francisco felt the impact of an earthquake with a magnitude of 7.8. Many pundits claim that the worst is yet to come, with an earthquake 748,180 times as intense as the 1906 earthquake ready to hit San Francisco. If the pundits ability to predict such earthquakes were correct, what would be the magnitude of their claimed earthquake? Round your answer to the nearest tenth.

Answers

Answer:

The magnitude of the claimed earthquake would be 13.67.

Step-by-step explanation:

The 1906 earthquake had a intensity of A and a magnitude of 7.8.

S is going to have the same value, so i am going to write as 1. So:

\log{A} = 7.8

A = 10^(7.8)

A = 63095734.448

Many pundits claim that the worst is yet to come, with an earthquake 748,180 times as intense as the 1906 earthquake ready to hit San Francisco.

So A = 748180*63095734.448

So

R = \log{A} = \log{748180*63095734.448} = 13.67

The magnitude of the claimed earthquake would be 13.67.

-3 < 5 true or false

Answers

Answer:

true

Step-by-step explanation:

Answer:

true?

Step-by-step explanation:

Write an inequality for a game that allows 2 and not more than 4 players

Answers

Answer:

2≤x≤4

Step-by-step explanation:

2 is less than/equal to x; x is less than/equal to 4

An advertising agency is estimating costs for promoting a music festival. The job will require 200 direct labor hours at a cost of $50 per hour. Overhead costs are applied at a rate of $65 per direct labor hour.1. What is the total estimated cost for this job?
2. If the company applies a markup of 20% of total costs (price quote is 120% of total costs), what price should it quote for this job?

Answers

Answer:

$23,000 and $27,600

Step-by-step explanation:

To find the total cost of the job, we do the equation: $50 x 200

This equation will calculate the cost of the direct labor.

$50 x 200 = $10,000

Now, calculate the overhead prices

The equation is 200 x $65

This equals 13,000

Now add them and you get 23,000

The cost of the job is $23,000

To find the markup, 1.2 x $23,000 = $27,600

Robin is making bows to sell at her mother's yard sale. She will use 3/4 foot of red ribbon and 2/3 foot of blue ribbon to make each bow. What is the ratio of the length of red ribbon to blue ribbon written as a unit rate?

Answers

Red Ribbon : Blue Ribbon
      
(3)/(4) : (2)/(3)

(3 * 3)/(4 * 3)  :  (2 * 4)/(3 * 4)

(9)/(12)  :  (8)/(12)

9 : 8

1 :  (8)/(9)



You planned to work on a project for about 4 and a 1/2 hours today.If you have been working on it for 1 and 3/4 hours, how much more time will it take?

Answers

Answer:

2(3)/(4)

Step-by-step explanation:

Given : You planned to work on a project for about 4 and a 1/2 hours today.

To Find :If you have been working on it for 1 and 3/4 hours, how much more time will it take?

Solution:

Total time to be spent on project today = 4(1)/(2)=(9)/(2) hours

You have been working on it for hours =  1(3)/(4)=(7)/(4)

Remaining time =  (9)/(2) -(7)/(4)

                        =  (11)/(4)

                        =  2(3)/(4)

Hence it will take  2(3)/(4) hours more .