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maxonik [38]
3 years ago
13

If a varies inversely with b, and a=20 when b=1/4, find the equation that relates a and b

Mathematics
1 answer:
MrRa [10]3 years ago
8 0

Answer:

Step-by-step explanation:

280ora

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I need help with this!
Alex17521 [72]

Answer:

(-7, -8)

Step-by-step explanation:

To start we have to isolate a variable to get an equation for it.

Let's get an equation for x from the first equation:

x - 2y = 9

x = 2y + 9

Now that we know what x is in terms of y, lets plug it into our second equation:

3(2y + 9) - 5y = 19

6y + 27 - 5y = 19

y + 27 = 19

y = -8

Now that we know what y equals, let's plug it into our first equation and solve for x:

x - 2(-8) = 9

x + 16 = 9

x = -7

Now that we have x and y, we make our ordered pair, in terms of (x, y):

(-7, -8)

Hope this helps!

8 0
3 years ago
Megan used the following expression to find the quotient of a division problem. 4X12 + 4X6
makkiz [27]
48+24=72
I have no idea where you would get. Division problem from this problem
6 0
3 years ago
If f(x) = 2x + 3 for all values of x, what is the value of f(-3)? A 0 B -3 C 5 D 9
frez [133]

Answer:

f(-3)=-3

Step-by-step explanation:

f(x)=2x+3

f(-3)=2(-3)+3

f(-3)=-6+3

f(-3)=-3

Hope this helps!

(Please mark Brainliest!)

7 0
4 years ago
Read 2 more answers
Why are you allowed to move the decimal points before dividing with decimals?
nadya68 [22]
It is because both the dividend and the divisor are multiplied by 10, 100, 1000, or some other power of ten.
7 0
3 years ago
What is the value of X?
rodikova [14]

Answer:

102

Step-by-step explanation:

triangle area = 180 degrees

straight line = 180 degrees

180 - 127 = 53

49

49 + 53 + 3rd angle = 180

3rd angle = 78

180-78 = x

x = 102

4 0
3 years ago
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