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Agata [3.3K]
3 years ago
11

80% is what fraction of the whole quantity?

Mathematics
1 answer:
USPshnik [31]3 years ago
8 0
The answer is 80/100
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Given that y is directly proportional to x. If y = 30 and x= 5, write an equation that connects y with x.
alukav5142 [94]

Answer: y = 6x

Step-by-step explanation:

Since this is a direct proportion, we will introduce the constant of proportionality here and this will be:

y = kx

Since y = 30 and x= 5,

30 = 5 × k

30 = 5k

k = 30/5

k = 6

Therefore, the equation that connects y to x will be:

y = kx

y = 6x

The equation that connects y to x is y = 6x.

4 0
3 years ago
What is the slope of a line perpendicular to y = 8 - 2/7x?
Salsk061 [2.6K]
The slope of the current line is -2/7. To find the slope of the line perpendicular to it, find the negative reciprocal of the slope. So it would be 7/2. The y intercept or the b would remain the same so the equation would be y=7/2x+8. Hope this helps. 
7 0
4 years ago
Read 2 more answers
Work out: x+3 5x-2 and x=8 <br> A)&gt;<br> B)&lt;<br> C)=
Ilia_Sergeevich [38]
The correct answer is < (B)
8+3 is 11
5*8 is 40 then take 2 away and you will get 38
11<38
3 0
3 years ago
Please look at the picture and answer it. Thank you
Nat2105 [25]

Answer:

q = 16°

Step-by-step explanation:

Hello!

Since this is a straight angle, the sum of both angles = 180°

Solve for q:

4q - 1 + 117 = 180\\\\4q + 116 = 180\\\\4q = 64\\\\q=16

The measure of q = 16°

6 0
3 years ago
Read 2 more answers
The given expression represents the area. Find the side length of the square. 64r^2-144r+81
Vinvika [58]
64r ^ 2-144r + 81
 For this case, what we can do is rewrite the second degree polynomial. 
 Apply resolvent:
 a = 64
 b = -144
 c = 81
 x = (- b +/- root (b ^ 2 - 4ac)) / 2a
 x = (- (- 144) +/- root ((- 144) ^ 2 - 4 * (64) * (81))) / 2 (64)
 x = (- (- 144) +/- root (0)) / 128
 x = 144/128
 x = 72/64
 x = 36/32
 x = 18/16
 x = 9/8
 Rewriting the polynomial:
 (8r-9) * (8r-9)
 Answer:
 The side length of the square is:
 
(8r-9)
3 0
3 years ago
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