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TEA [102]
3 years ago
13

If y varies inversely with x and y=2 when x=8 what is K the constant of proportionality

Mathematics
1 answer:
777dan777 [17]3 years ago
7 0
Y=k/x
2=k/8
k=16
the answer is A
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disa [49]

Answer:

75 percent

Step-by-step explanation:

percent increase = increase/original ×100

= (35-20)/20 ×100 =15/20 ×100= 15×5= 75

6 0
2 years ago
Identify the angle of elevation.<br><br> A. 3<br> B. 2<br> C. 1
lisov135 [29]

Answer:

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Step-by-step explanation:

there really isn't an explanation needed

5 0
3 years ago
Help me plsss ASAP<br> Quickly
Lera25 [3.4K]

Answer:

7

Third answer is correct.

Step-by-step explanation:

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hope this helps you.

7 0
3 years ago
A rectangular parking lot has a perimeter of 820 ft. The area of the parking lot measure SL 42,000 ft
horsena [70]

Answer:

a= 200

b = 210

Step-by-step explanation:

My assumption is, we have to find the length of sides of rectangle

Given

perimeter = 2a + 2b = 820 ft (i) (here a is smaller side and b is larger side)

area = a*b = 42,000 ft^2 (ii)

from eq (1)

2a + 2b = 820

=> 2(a+b) = 820

=> a+b = 820/2

=> a + b = 410

=> a = 410-b   (iii)

putting the value of a in eq(ii), we get

(410-b) *b = 42,000

410b - b^2 = 42,000

0 = b^2 - 410b + 42000

b^2 - 410b + 42000 = 0

b^2- 200b- 210b + 42000 = 0

b(b-200)-210(b-200) = 0

(b-200)(b-210) = 0

or

b= 210 and b = 200

if b is larger side than b =210

By putting value of b in eq(iii),

a = 410 -210 = 200

 

6 0
3 years ago
I need help with multiplying polynomials using foil<br><br> Example <br> (X+5)(x-6)
MArishka [77]
Well (x+5)(×-6)
x*x =x2
x*-6=-6x
x*5 = 5x
5*-6= -30
add them all together to get x2-x-30.
I hope this is what you were asking
3 0
3 years ago
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