Answer:
see explanation
Step-by-step explanation:
given that r varies jointly with x and y then the equation relating them is
r = kxy ← k is the constant of variation
To find k use the condition r = 15 when x = 3 and y = 4
k = = = 1.25
r = 1.25xy ← equation of variation
When x = 16 and y = 1.25, then
r = 1.25 × 16 × 1.25 = 25
Answer:
with the tax it would be :50.03
And the percentage would be :60%
Step-by-step explanation:
Answer:
C is the answer
Step-by-step explanation:
Hope this helps
Have a good day
Maximum of 82 notes of 200 rand Tom can get.
Step-by-step explanation:
Total money Tom has = £890
Exchange rate,
£1 = 18.57 rand
£890 = 890 x 18.57
= 16527.3 rand
Maximum no. of 200 rand notes = 16527.3/200
= 82.63
Maximum of 82 notes of 200 rand Tom can get.
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Answer:
t =
Step-by-step explanation:
First, you need to complete the -3 + 1 and then expand the brackets
-3 + 1 = -2
7t -2 - (-2) = -3(1 - 3t)
Now expant the -3(1 - 3t) bracket
-3 * 1 = -3
-3 * -3t = 9t
7t - 2 - -2 = 9t - 3
The two negatives turn positive:
7t - 2 + 2 = 9t - 3
7t = 9t - 3
Move the -3 over to the oposite side, and also move the +7t over to the +9t, making it a negative:
3 = 9t - 7t
3 = 2t
Divide both sides by 2:
t =
So the value of t is
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