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zimovet [89]
3 years ago
8

What is the value of x in the equation

Mathematics
2 answers:
serg [7]3 years ago
7 0
The answer to this question would be 2
Gala2k [10]3 years ago
3 0

Answer:

x = 2

Step-by-step explanation:

13x - 2(8 + 5x) = 12 - 11x

13x - 16 -10x = 12 - 11x

13x - 10x + 11x = 12 +16

14x = 28

x = 28/14

x = 2

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Find an equation for a tangent plane z=e-x2-y2 at the point (0,0,1).
Nadya [2.5K]

Answer: equation of the tangent plane is z = 1

Step-by-step explanation:

Given equation

z = e^(-x²-y²) at point (0,0,1)

now let z = f(x,y)

Δf(x,y) = [ fx, fy ]

= (-2xe^(-x²-y²)), (-2ye^(-x²-y²))

now

Δf (0,0) = [ 0, 0 ] = [ a, b ]

equation of the tangent plane therefore will be

z - z₀ = a(x-x₀) + b(y-y₀)

z - 1 = 0(x-0) + 0(y-0)

z - 1 = 0 + 0

z = 1

Therefore equation of the tangent plane is z = 1

7 0
3 years ago
In the figure, a∥e , m∥n , and m∠3 = 112°.
liq [111]
<1 = <2
vertical angles (congruent)

<3 = <2
corresponding angles (congruent)

so that: <1 = <2 = <3 = 112 degree

8 0
2 years ago
Read 2 more answers
????????helppppppppplzzzzzzzzzz
IrinaK [193]
The sample space would be 6 . this is because when you roll the dice there are 6 different outcomes
5 0
3 years ago
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Tickets for the community fair cost $12 for adults and $5 dollars for children. On the first day of the fair, 312 tickets were s
givi [52]

With this information we can set up 2 equations:

x + y = 312      (# of tickets sold for adults + # of tickets sold to adults = 312)

12x + 5y = 2204 ( # of tickets sold for adults times $12 + # of tickets sold to adults times $5  = $2204)

Where x is how many  tickets were sold to adults and y how many tickets were sold to children

Now we can solve this system of equations by substitution:

isolate y in the first equation to find its value and plug it in the second equation

x + y = 312

isolate y by subtracting x from both sides:

x - x + y = 312

y = 312 - x

Apply y = 312 - x to the second equation

12x + 5y = 2204

12x + 5( 312 - x) = 2204

12x + 1560 - 5x = 2204

7x + 1560 = 2204

Subtract 1560 from both sides to isolate x

7x + 1560 - 1560 = 2204 - 1560

7x = 644

Divide both sides by 7

7/7x = 644/7

x = 92

Now plugin 92 for x in the first equation to find the value of y

x + y = 312

92 + y = 312

subtract 92 from both sides

92 - 92 + y = 312 - 92

y = 220

x = 92, y = 220

92 tickets were sold to adults and 220 tickets were sold to children

Hope it helps :)

Branliest would be appreciated

6 0
3 years ago
I need help with this math problem please
Yanka [14]

Answer:

x=12

Step-by-step explanation:

90 = x + 42 + 3x

48 = x + 3x

48 = 4x

12 = x

7 0
3 years ago
Read 2 more answers
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