Answer:
£166 : £581
Step-by-step explanation:
sum the parts of the ratio, 2 + 7 = 9 parts
Divide the amount by 9 to find the value of one part of the ratio
£747 ÷ 9 = £83 ← value of 1 part of the ratio, then
2 parts = 2 × £83 = £166
7 parts = 7 × £83 = £581
£747 = £166 : £581 in the ratio 2 : 7
Answer:
8000
Step-by-step explanation:
It's the only number missing from the answer to arrive at the answer itself :)
X + 388 = 388 + 152
x + 388 = 540
-388 -388
------------------------
x=152
Answer: The conclusion drawn from the study is *invalid* because the sample is *biased*. In this instance, an *inappropriate* study was concluded.
F(x) = x² + 4x - 1
f(x) = x² + 4x + 4 - 4 - 1
f(x) = (x + 2)² - 5