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ira [324]
3 years ago
10

A family moved to Orlando, FL and bought a home. They paid $254,876 for their house. In their neighborhood the mean price of a h

ome is $267,985 with a standard deviation of $5,834. Calculate the z-score for the price of their home and indicate if the price they paid for their home usual or unusual?
Mathematics
1 answer:
Fofino [41]3 years ago
8 0

Answer:

Step-by-step explanation: standard score is equal to sample mean - population mean all over standard deviation.

Z=×-u/sigma. Where sigma is standard deviation. 267985-254876=13109. 13109/5834=2.247. Therefore the standard score is 2.247. The price they paid for the house is usual.

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A round cake has a diameter of 30 cm. What is the circumference of the<br> cake?
andre [41]

Answer: 56

Step-by-step explanation:

Just trust me I had this question on a quiz

8 0
2 years ago
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(3cosx-4sinx) + (3sinx+4cosx) = 5
Ksenya-84 [330]
(3 cos x-4 sin x)+(3sin x+4 cos x)=5
(3cos x+4cos x)+(-4sin x+3 sin x)=5
7 cos x-sin x=5
7cos x=5+sin x
(7 cos x)²=(5+sinx)²
49 cos²x=25+10 sinx+sin²x
49(1-sin²x)=25+10 sinx+sin²x
49-49sin²x=25+10sinx+sin²x
50 sin² x+10sinx-24=0

Sin x=[-10⁺₋√(100+4800)]/100=(-10⁺₋70)/100
We have two possible solutions:
sinx =(-10-70)/100=-0.8
x=sin⁻¹ (-0.8)=-53.13º      (360º-53.13º=306.87)

sinx=(-10+70)/100=0.6
x=sin⁻¹ 0.6=36.87º

The solutions when  0≤x≤360º are:  36.87º and 306.87º.


3 0
2 years ago
To order a class ring, students must decide on a gold, silver, or white gold band and one of 15 stones. They must also choose fr
pantera1 [17]
The best and most correct answer among the choices provided by your question is the third choice. There are 1350 different ring selections.

It is because:

3*15*30 = 1,350
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
5 0
3 years ago
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The length of a rectangle is 4 cm longer than the width, The perimeter is 80 cm. Find the length and the width. Substition Metho
MrRa [10]

Answer: Length = l

Width = w

2l + 2w = 80cm

l+w = 40cm

l = w+4

w+4 + w = 40cm

2w + 4 = 40cm

2w = 36cm

w = 18cm

l = 22cm

jd3sp4o0

Step-by-step explanation:

6 0
2 years ago
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Two numbers total 42 and have a difference of 8 find the two numbers
FinnZ [79.3K]
X+y = 42
x-y = 8
x = 8+y

Substitute it in 1st equation,
8+y+y=42
2y = 34
y = 17

Substitute it in 1st eq.,
x = 42-17 = 25

So, the two numbers are 25 & 17

Hope this helps!

5 0
3 years ago
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