Zara ate 50 almonds last week which is 150% as many as she ate last week.
The percentage is defined as a ratio expressed as a fraction of 100.
We have been given that Zara ate 75 almonds this week, or 150% as many as she ate last week.
Let's assume that she eat x almonds last week
As per the given question, we can write the percentage would be as
⇒ 150% of x = 75
⇒ (150/100) x = 75
Apply the cross-multiplication operation,
⇒ 150x = 7500
Divided by 150 into both sides of the above equation,
⇒ x = 7500/150
⇒ x = 50
Therefore, she eat 50 almonds last week.
Learn more about the percentages here:
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Answer:
see below
Step-by-step explanation:
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–32 + _____ = 2(x2 + 10x + 25)
18 = 2(x + 5)2
9 = (x + 5)2
± _____ = x + 5
x = –2 or x = ____
_____=missing pieces
The steps used in completing the square of the given quadratic equation have been detailed below.
The first step given is;
- 32 = 2(x² + 10x)
The next step is to add a square of half the coefficient of x. Which in this case is 50 to both sides.
Second step is;
-32 + 50 = 2(x² + 10x + 25)
Third step is to further simplify the left and favtorize the right to get;
18 = 2(x + 5)²
9 = (x + 5)²
Fourth step is to take square root of both sides to get;
±√9 = x + 5
±3 = x + 5
Thus;
x = - 2 or x = - 8
Read more about completing the square at; brainly.com/question/10449635
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