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SOVA2 [1]
3 years ago
9

What is the answer? x^2-y^2=55

Mathematics
1 answer:
LenKa [72]3 years ago
3 0

Answer:

To solve for x we can write:

x² - y² = 55

x² = y² + 55

x = ±√(y² + 55)

To solve for y:

x² - y² = 55

y² = x² - 55

y = ±√(x² - 55)

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Because of these ratios what is the formula for this slope?
Kazeer [188]
Answer: (Y2 - Y1)/(X2 -X1)
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3 years ago
Use a Venn diagram to answer the question. A survey of 180 families showed that 67 had a​ dog; 52 had a​ cat; 22 had a dog and a
Mice21 [21]

Answer:

There are 13 families had a parakeet only

Step-by-step explanation:

* Lets explain the problem

- There are 180 families

- 67 families had a dog

- 52 families had a cat

- 22 families had a dog and a cat

- 70 had neither a cat nor a​ dog, and in addition did not have a​

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- 4 had a​ cat, a​ dog, and a parakeet (4 is a part of 22 and 22 is a part

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* We will explain the Venn-diagram

- A rectangle represent the total of the families

- Three intersected circles:

 C represented the cat

 D represented the dog

 P represented the parakeet

- The common part of the three circle had 4 families

- The common part between the circle of the cat and the circle of the

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- The common part between the circle of the dog and the circle of the

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- The common part between the circle of the cat and the circle of the

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- The non-intersected part of the circle of the dog had 67 - 22 - a =

  45 - a families

  had dogs only

- The non-intersected part of the circle of the cat had 52 - 22 - b =  

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  had cats only

- The non-intersected part of the circle of the parakeet had c families

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- The part out side the circles and inside the triangle has 70 families

- Look to the attached graph for more under stand

∵ The total of the families is 180

∴ The sum of all steps above is 180

∴ 45 - a + 18 + 4 + 30 - b + b + c + a + 70 = 180 ⇒ simplify

- (-a) will cancel (a) and (-b) will cancel (b)

∴ (45 + 18 + 4 + 30 + 70) + (-a + a) + (-b + b) + c = 180

∴ 167 + c = 180 ⇒ subtract 167 from both sides

∴ c = 180 - 167 = 13 families

* There are 13 families had a parakeet only

5 0
3 years ago
Given f(x)=10-2x, find f(7)
mylen [45]

Answer:

f(7)=10-14=-4

Answer=-4

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Surface Area of Prisms
zubka84 [21]

Answer:

6 * 24 * 10 * 10 = 14,400

Step-by-step explanation:

6 * 10 = 60.

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60 * 240 = 14,400.

hope this helps.

6 0
2 years ago
Assuming log, 4.4 = 1.4816 and log 7.7 = 2.0142, then whats the value of log, 7/4
denis23 [38]
Log (7/4) is equivalent to log (7.7/4.4), therefore it's log(7.7) - log(4.4), or...

2.0142 - 1.4816 = 0.5326
4 0
2 years ago
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