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aliina [53]
4 years ago
7

A sporting goods store pays 180 for a rubber raft. the percent of markup is 55 percent. find the rafts selling price

Mathematics
1 answer:
Alex_Xolod [135]4 years ago
8 0

Multiply the cost by 1 + markup :

180 x 1 +0.55 =

180 x 1.55 =279

The answer is D. $279

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Aubrey can walk 3000 feet in 10 minutes.Walking at the same rate,how many feet can she walk in 10 seconds
Lady_Fox [76]
Speed of aubrey = 3000 ft per 10 minutes
= 3000 ft / 10 minute
= 300 ft / 1 minute
= (300 ft / 60) second
= 5 ft/second
Distance she can walk in 10 seconds = 5ft/sec
= 5 ft / seconds × 10 seconds
= 50 ft
Hence she can walk 50 ft in 10 seconds
4 0
3 years ago
Help please thank you!! :)
tankabanditka [31]

Answer:

Area of circle: 1662.57 cm

Circumference of circle: 144.57 cm

Step-by-step explanation:

Formula of area of circle:

pi x r2 or radius x radius

So, it's 22/7 x 23 x 23 = 1662.571429

Formula of circumference of circle:

2 x pi x radius OR

pi x diameter

Let's use the second method, to find diameter it is radius x 2 = 46

So,

46 x 22/7 = 144.5714286

4 0
3 years ago
A 95 percent confidence interval for the mean of a population is to be constructedand must be accurate within 0.3 unit. A prelim
jarptica [38.1K]

Answer:

B. 359

Step-by-step explanation:

Given that:

The margin of error (e) must be within 0.3 unit, The standard deviation (σ) = 2.9 and the the confidence level = 95% = 0.95

α = 1 =0.95 = 0.05

\frac{\alpha}{2}=\frac{0.05}{2}=0.025

The z score of 0.025 corresponds to the z score of 0.0475 (0.5 - 0.025) which can be gotten from the normal probability table.

Therefore: z_\frac{\alpha}{2}= z_{0.025}=1.96

The formula for the margin of error is given by:

e=z_{0.025}\frac{\sigma}{\sqrt{n} } \\Substituting:\\0.3=1.96*\frac{2.9}{\sqrt{n} } \\\sqrt{n}=\frac{1.96*2.9}{0.3}\\\sqrt{n} =18.95\\  n=18.95^2=359

Therefore the smallest sample size (n) is 359

5 0
3 years ago
What is the value of a when we rewrite 15^x as a^x/6
jarptica [38.1K]

Answer:

a = 11,390,625.

Step-by-step explanation:

a^x/6 =  (a^1/6)^x  

(a^1/6)^x = 15^x  so:

a^1/6 = 15

1/6 ln a = ln 15

ln a = 6 ln 15

ln a = 16.2483

a = 11390625.

4 0
3 years ago
A video game cost $34.90 plus 10% tax. How much will you pay in all for the game?
nignag [31]

Answer:$38.39

Step-by-step explanation:

8 0
4 years ago
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