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TEA [102]
3 years ago
14

Which of the following circles lie completely in the fourth quadrant

Mathematics
1 answer:
NARA [144]3 years ago
4 0

Answer:

C.(x-5)²+(x+5)=9

D (x-9)²+(y+9)²=16

Step-by-step explanation:

Use a graph tool to visualize the circle.See attached

You can also see that  in the options

C. circle has center (5,-5) and radius 3 which will form in 4th quadrant

D. Circle has center (9,-9) and radius 4 which will still form in 4th quadrant

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Three pith balls supported by insulating threads hang from a support. We know that ball X is positively charged. When ball X is
Tamiku [17]

Answer:

B. z has a negative charge

Step-by-step explanation:

7 0
3 years ago
Katherine buys a tv with a normal price of $200 and she has a 25% off coupon. How much money did she save????
andrey2020 [161]

Given:

Normal price of a tv = $200

Coupon = 25% off

To find:

The money saved by Katherine.

Solution:

Katherine buys a tv with a normal price of $200 and she has a 25% off coupon. It means, the money saved by Katherine is 25% of normal price of tv, i.e., $200.

Saving=25\%\text{ of }200

Saving=\dfrac{25}{100}\times 200

Saving=25\times 2

Saving=50

Therefore, the money saved by Katherine is $50.

6 0
3 years ago
The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a me
zimovet [89]

Answer:

Option D) $275

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $235

Standard Deviation, σ = $20

We are given that the distribution of amount of money spent by students is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.975

P( X < x) = P( z < \displaystyle\frac{x - 235}{20})=0.975  

Calculation the value from standard normal z table, we have,  

P( z < 1.960) = 0.975

\displaystyle\frac{x - 235}{20} = 1.960\\x =274.2 \approx 275

Approximately 97.5% of the students spent below $275 on textbook.

7 0
3 years ago
I NEED IT ASAP HWHAHAHA
vova2212 [387]
Answer: 19/100
explanation: it has a 19% chance so it is 19/100
4 0
2 years ago
3x+4=10 in a sentence
LenaWriter [7]
X= 2 hope this helped
6 0
2 years ago
Read 2 more answers
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