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Reptile [31]
4 years ago
9

Original grade 80 New grade 100 Find the percent of increase

Mathematics
1 answer:
MaRussiya [10]4 years ago
8 0

Answer:

25%

Step-by-step explanation:

Percent change = 100 - 80

|80|

x 100 = 20

80

x 100 = 25

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Tell whether x and y show direct variation, inverse variation or - y/4 = 2x
Sophie [7]

9514 1404 393

Answer:

  direct variation

Step-by-step explanation:

The given equation can be written in the direct variation form ...

  y = kx

  y = -8x . . . . rewrite of the given equation (multiply by -4)

This is an example of direct variation.

4 0
3 years ago
Find dy/dx by implicit differentiation for ycos(x)=xcos(y)
alekssr [168]

Answer:

dy/dx = (cos y + y sin x) / (cos x + x sin y)

Step-by-step explanation:

y cos x = x cos y

y (-sin x) + dy/dx cos x = x (-sin y dy/dx) + cos y

-y sin x + dy/dx cos x = -x sin y dy/dx + cos y

dy/dx (cos x + x sin y) = cos y + y sin x

dy/dx = (cos y + y sin x) / (cos x + x sin y)

5 0
3 years ago
The school yard has an area of 3564 ft.² the section that is in the shape of a triangle is used for picnic tables what is the ar
kicyunya [14]

x × 44ft =3564

× = 81

area of the section for a picnic

= 1/2 × 44 × 81

= 1782 ft^2

8 0
4 years ago
Question<br> The quotient of a number and 5 has a result of 2. What is the number
a_sh-v [17]

Answer:

Probably 10

Step-by-step explanation:

10/5=2

8 0
3 years ago
Really need help with this question ASAP!!!
Leya [2.2K]
H=-5(t^2 - 16t)

H=-5(t^2 - 16t +64)+320

H=-5(t-8)^2 +320

Vertex is at (8, 320)

The max height is 320 m.
4 0
4 years ago
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