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leva [86]
3 years ago
7

If x+y = 3, xy =2 what is the value of x‌3+y3​

Mathematics
2 answers:
weeeeeb [17]3 years ago
7 0

Answer:

X+y=3. X=3-y. X=3-y. (1)

X.y=2. Y.(3-y) =2. 3y-y^2=2 (2)

(2). -y^2+3y=2

0=Y^2-3y+2

Y=1. X=3-1. X=2

Y=2. X=3-2. X=1

Step-by-step explanation:

dimaraw [331]3 years ago
3 0

Answer:

- 18

Step-by-step explanation:

As

(x+y)^3=x^3+y^3+3xy(x+y)

By substituting values,

27-18=x^3+y^3

=》x^3+y^3=9

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The mean of three numbers is 8 two of the numbers are 6 and 11 work out the third number
Andreas93 [3]

Answer:

7

Step-by-step explanation:

To find the number, first multiply 8 by 3, since that is how you find the mean.

8 x 3 = 24 (total)

x + 6 + 11 = 24

x = 24 - 6 - 11

x = 7

Inverse:

7 + 6 + 11 = 24

Mean = 24/3 = 8

Hope this helps!

4 0
3 years ago
ASAP!!! I NEED HELP geometry/trigonometry please
777dan777 [17]

Answer:

Perpendicular = Y = 34.64 ft (Approx)

Base = X = 20 ft

Step-by-step explanation:

Given:

θ = 60°

Hypotenuse = 40 ft

Perpendicular = Y

Base = X

Find:

X and Y

Computation:

Sinθ = Perpendicular / Hypotenuse

Sin 60 = Y / 40

Perpendicular = Y = 34.64 ft (Approx)

Cosθ = base / Hypotenuse

cos 60 = X / 40

Base = X = 20 ft

6 0
3 years ago
17. TRAFFIC SIGNS The diagram shows a sign used to warndrivers of a school
MakcuM [25]

each numbered angle is

1. right angle

2. obtuse angle

Road signs, often known as traffic signs, are posted along the side of roadways or above them to inform and direct drivers. Simple wooden or stone milestones were the oldest types of signs. Later, directional signs with arms were developed, such as the fingerposts used in the United Kingdom and their wooden equivalents in Saxony. Since the 1930s, as traffic volumes have increased, many nations have adopted pictorial signs or have similarly standardized and simplified their signs in an effort to overcome linguistic barriers and improve traffic safety. Such pictorial signals are typically based on international norms and use symbols (often silhouettes) in place of words. These signs were initially created in Europe and have since been adopted in varied degrees by the majority of nations.

To know more about traffic signs refer to brainly.com/question/13158950

#SPJ9

The complete question is attached below

7 0
1 year ago
What is the area of the first triangle?
erica [24]

Answer:

1/2 foot

Step-by-step explanation:

1 x 1 = 1

1/2 = 1/2

8 0
3 years ago
Find the 11th term of the geometric sequence 6, -18, 54
Nataly [62]
I don’t feel like doing it but I we’ll tell you how to do it you multiply it by 3 so 6 x 3 equals 18 just in negative do 18 x 3 equal 54 so every other on is a negative it’s Simone
4 0
3 years ago
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