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vova2212 [387]
3 years ago
10

3x^2-y^3-y^3-z if x=3, y=-2, and z=-5

Mathematics
2 answers:
Serggg [28]3 years ago
5 0
3(3)^2-(-2)^3-(-2)^3-(-5) = 48

48 is the answer.
WITCHER [35]3 years ago
4 0
48 is the answer!!!!!!!
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The hypotenuse of the right triangle is 5y inches long. The lengths of the legs are x + 8 and x + 3 inches. If the perimeter of
Zolol [24]

Answer: 35 inches.

Step-by-step explanation:

We know that:

hypotenuse = 5*y in

cathetus 1 = (x + 8) in

cathetus 2 = (x + 3) in

The perimeter of the triangle is 76 inches, then:

5*y + (x + 8) + (x + 3) = 76

5*y + 2*x + 13 = 76

We also know that the length of the hypotenuse minus the length of the shorter leg is 17 in.

The shorter leg is x + 3, then:

5*y - (x + 3) = 17

Then we have the equations:

5*y + 2*x + 11 = 76

5*y - (x + 3) = 17

With only these two we can solve the system, first we need to isolate one of the variables in one of the equations, i will isolate x in the second equation.

x = 5*y  - 3 - 17 = 5*y - 20

x = 5*y - 20

Now we can replace this in the other equation, we get:

5*y + 2*x + 11 = 76

5*y + 2*(5*y - 20) + 11 = 76

15*y - 40 + 13 = 76

15*y - 29 = 76

15*y = 76 + 29 = 105

and remember that the hypotenuse is equal to 5*y, then we want to get:

3*(5*y) = 105

5*y = 105/3 = 35

5*y = 35

Then te length of the hypotenuse is 35 inches.

6 0
3 years ago
Solve the equation10=2N + 1
Step2247 [10]

Answer:

N=9/2

Step-by-step explanation:

Question: <u>10=2N+1</u>

1) Subtract 1 from both sides:

9=2N

2) Divide both sides of the equation by 2:

N=9/2

5 0
3 years ago
Read 2 more answers
Motor sold half of his comic books and then bought
sergeinik [125]
20 comic books is the right awnser
5 0
2 years ago
Points (4, 3) and (0, 6) Mid point
V125BC [204]

Answer:

(3.5,3)

Step-by-step explanation:

Midpoint= (x¹+x²/2, y¹+y²/2)

x¹=4

x²=3

y¹=0

y²=6

Put your values into the formula

(4+3/2,0+6/2)

(7/2, 6/2)

(3.5,3)

5 0
2 years ago
The Westerburg High School Soccer Team performs differently in the rain than they do when it doesn't rain. When it rains they ha
marusya05 [52]
The correct answer is Choice D: 68%.

You have to make a tree diagram with all of the possibilities.

Here are the possibilities:

Rain - Win = 0.6 x 0.8 = 0.48
Rain - Loss = 0.6 x 0.2 = 0.12

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Adding up the two winning options gives us 68%
0.48 + 0.2 = 0.68
8 0
3 years ago
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