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Zolol [24]
3 years ago
13

If y varies as directly as the square of x, and y = 75/8 when x = 5, find y when x = 2

Mathematics
1 answer:
tangare [24]3 years ago
3 0

Step-by-step explanation:

y varies as x^2

y=75/8

x=5

x^2=5^2=25

y=kx^2

k= constant

75/8=25k

cross multiply

8*25k=75

200k=75

k=75/200=15/40=3/8

therefore k=3/8.

equation bonding x and y =

x=3/8y

x=5. 5=3/8y

3=40y. therefore y=3/40.

when x is 2

2=3/8y

16y=3

y=3/16

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Black_prince [1.1K]
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7 0
3 years ago
6(x^2-1).6x-1/6(x+1)
Andrej [43]
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7 0
3 years ago
Let f(x)=x2 and g(x)=x-3. Evaluate (f•g)(0)
Galina-37 [17]

Answer:The answe would be 5 cause the 0 doesn't count

Step-by-step explanation:

3 0
2 years ago
The sum of two digit numbers is 14 when you reverse its digits you increase the number by 36 what is the number
Dmitry_Shevchenko [17]
10x+y = 10y+x +36
x+y=14

9x-9y=36
x-y=4

x= 14-y
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7 0
3 years ago
A monument in a park is shaped like a square pyramid. The dimensions are shown in the net. What is the surface area of the monum
vampirchik [111]

The surface area of the monument shaped like a square pyramid is 14 m².

<h3>Area </h3>

Area is the amount of space that is occupied by a two dimensional shape or object.

From the diagram

Area of each triangle = (1/2) * base * height = (1/2) * 2 * 2.5 = 2.5 m²

Area of square = length * length = 2 m * 2 m = 4 m²

Surface area of monument = 4(2.5) + 4 = 14 m²

The surface area of the monument shaped like a square pyramid is 14 m².

Find out more on Area at: brainly.com/question/25292087

5 0
3 years ago
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