Enter the unknown value that makes this statement true:

45 is
% of 50.

90%

Step-by-step explanation:

Step 1: We make the assumption that 50 is 100% since it is our output value.

Step 2: We next represent the value we seek with X.

Step 3: From step 1, it follows that 100%=50.

Step 4: In the same vein, X%=45.

Step 5: This gives us a pair of simple equations:

100%=50(1)

X%=45(2)

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); We have

100%/X% = 50/45

Step 7: Taking the inverse (or reciprocal) of both sides yields

X%/100% = 45/50

X= 90%

Therefore, 45 is 90% of 50.

20335+282=20617

step-by-step explanation:

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!