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babunello [35]
3 years ago
6

I dont know how to begin? Please help

Mathematics
1 answer:
34kurt3 years ago
7 0

Answer:

Step-by-step explanation:

1.you have to set up a proportion(x/120 = 20%/100%

2.you have to cross multiply

3.you have to divide 100x by the number you get

4.you got your answer.

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If Bart has 20$ and Andy took $19.65 how much does Bart have
Helen [10]

Answer:

well bart has 20.00

andy took      19.65

Step-by-step explanation:

subtract 20.00\\-19.65\\\\_______\\0.35

your answer should be 0.35

8 0
3 years ago
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
Solve the system of equations using substitution:<br> 6x – y = –15<br> X + 2y = 17
defon

Answer:

x = -1

y = 9

Step-by-step explanation:

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3 0
3 years ago
Ullmark 1 Bus
Vesna [10]

Answer: Option B) 7,214

Step-by-step explanation:

The value of the digit 2 in 5,426 is 20.

-In 2,843, the place value of 2 is 2000

- In 7,214, the place value of 2 is 200

- In 43,928, the place value of 2 is 20

- In 67,452, the place value of 2 is 2

So, since he place value of 2 in 7,214 is 200; and since 200 is ten times more than 20 (i.e 20 x 10 = 200)

Thus, the answer is 7214

3 0
3 years ago
What is the same as 2/3
Paul [167]

Answer:

4/6 and 6/9 us simlar as 2/3

7 0
2 years ago
Read 2 more answers
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