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2 years ago

Give an equation which describes the intersection of this sphere with the plane z=0z=0.

1 answer:

4 0

C=(x0,y0,z0)C=(x0,y0,z0) and radius rr.

(x−x0)2+(y−y0)2+(z−z0)2=r2(x−x0)2+(y−y0)2+(z−z0)2=r2

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Frank has three times as many dollars as Deandra, and Charlie has 20 more dollars than Frank. If Charlie has $65, how much money

My name is Ann [436]

Answer:

$15

Step-by-step explanation:

Let Frank be f

Deandra be d and

Charlie be c

f = 3d ......(i)

c=$20+f.....(ii)

c=$65........(iii)

Equate (ii) and (iii)

$20+f = $65

f = $45.......(iv)

Equate (i) and (iv)

3d = $45

d = $15

Deandra has $15.

8 0

1 year ago

Read 2 more answers

The sides of a square are five to the power of two fifths inches long. What is the area of the square?

Feliz [49]

I believe the correct answer from the choices listed above is the first option. If the sides of a square are five to the power of two fifths inches long, then the are of the square would be five to the power of four fifths square inches. Hope this answers the question.

3 0

2 years ago

A trader paid 1500 for 6 drinking cups. one of the cups got broken. he sold the remaining five, making a profit of 10percent cal

tankabanditka [31]

Answer:

Cost price of each cup = 1500/6 = 250

Selling price of each cup = 1650/5 = 330

Step-by-step explanation:

Cost price of cups = 1500

Profit = 10%

Selling price of cups = ?

Profit and loss percentage are calculated based on cost price and the formula to calculate profit is mentioned as under:

Profit percentage (%) = Profit x 100/Cost price

10 = Profit x 100/1500

⇒ Profit = 10 x 1500/100

⇒ Profit = 150

The formula for finding selling price is mentioned as under:

Selling Price = Profit + Cost Price.

Selling Price = 150 + 1500

⇒ Selling Price = 1650.

Since one of the six cups was broken that means the seller earned profit based on only 5 cups, it implies that selling price of each cup will be 1650/5 = 330.

6 0

2 years ago

X <img src="https://tex.z-dn.net/?f=x%200.8265%20%3D%2045%20" id="TexFormula1" title="x 0.8265 = 45 " alt="x 0.8265 = 45 " al

Sonbull [250]

$0.8265x = 45 \\ x = 45 \div 0.8265 \\ x = 45 \times \frac{10000}{8265} \\ x = \frac{45000}{8265} \\ x = 54 \frac{3690}{8265} \\ x = 54 \frac{246}{551}$

3 0

2 years ago

Freddy the frog is climbing up a well. Every day he climbs up 3 m but some nights he falls asleep and slips back 4m at the start

Anarel [89]

Answer: The frog fell asleep for 4 nights.

Step-by-step explanation: First, he climbs up 3m every night. there are 16 nights before he gets to 29m. He has not climbed up for the 16th day so 15*3= 45. 45-29= 16. 16/4=4. The frog slept for 4 nights.

7 0

2 years ago