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DanielleElmas [232]
4 years ago
6

When x=-2 and y=-1,-x^2-5xy+5y^3 is

Mathematics
1 answer:
kirill115 [55]4 years ago
5 0

Answer:

-19

Step-by-step explanation:

Evaluate -x^2 - 5 x y + 5 y^3 where x = -2 and y = -1:

-x^2 - 5 x y + 5 y^3 = -(-2)^2 - -2 (-5) + (-1)^3×5

(-2)^2 = 4:

-4 - -5 (-2) + 5×(-1)^3

(-1)^3 = -1:

-4 - -5 (-2) + 5×-1

-5 (-2) = 10:

-4 - 10 - 5

-4 - 10 - 5 = -(4 + 10 + 5):

-(4 + 10 + 5)

| 1 | 0

| | 5

+ | | 4

| 1 | 9:

Answer:  -19

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A male lion eats about 108 pounds of meat in a week about how much does it eat in a day
Marianna [84]

Answer:

15.43 pounds of meat in a day

Step-by-step explanation:

108 pounds per week,

1 week=7 days,

108/7=15.43

4 0
4 years ago
Read 2 more answers
pumpkins were weighed at the pumpkin patch the weights of the pumpkin are shown choose two weights that the most number of pumpk
Hunter-Best [27]

Answer: 11 and 9 1/2!

Step-by-step explanation:

Because look at the chart the most are? You guessed it! 11 and 9 1/2 hope it helps!

4 0
3 years ago
An isosceles right triangle has legs of equal length. If the hypotenuse is 22 inches long, find the length of each leg. PLEASE H
True [87]
<h3>Answer:</h3>

15.56 inches

<h3>Explanation:</h3>

Let L represent the leg length. Then the Pythagorean theorem tells you ...

... 22² = L² + L² . . . . the square of the hypotenuse is the sum of the squares of the other two sides

... 484 = 2L² . . . . . . . simplify

... 242 = L² . . . . . . . . divide by 2; next, take the square root

... √242 = L ≈ 15.56 . . . . inches

_____

<em>Comment on this problem in general</em>

For a hypotenuse of length H, the above equation becomes ...

... H² = L² +L² = 2L²

... H²/2 = L² . . . . . divide by 2

... H/√2 = L . . . . . take the square root (<em>general solution for isosceles right triangles</em>)

For your problem, this is ...

... (22 in)/1.414214 = L = 15.556 in

8 0
3 years ago
If a circle has a diameter of 12 units, what is the area of a semicircle
alexira [117]
The area of a circle with diameter 12 is 36\pi. Dividing that by 2, you get an area of 18\pi. Hope this helps!
3 0
4 years ago
Please help me i need this really bad
lesya [120]
The answer is 3
Multiply 6 by 3 to get the total amount of money for the books then minus the answer 18 which you get from 6 x 3 = 18
Then minus 18 from 21 to get $3
21 - 18 = 3
7 0
3 years ago
Read 2 more answers
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