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joja [24]
2 years ago
8

On a bird-watching trip, Mei and Jackie counted 68 birds.

Mathematics
1 answer:
defon2 years ago
5 0

Answer:

The answer is 70% if you round it.

Step-by-step explanation:

45 out of 68 is 66 but if you're rounding it the answer is 70%.

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<img src="https://tex.z-dn.net/?f=%28%20%5Cfrac%7B1%7D%7B2%7D%20%20%7Ba%7D%5E%7B2%7D%20%20%2B%20%20%20%5Cfrac%7B1%7D%7B2%7D%20ab
Zigmanuir [339]

Answer:

\frac{1}{2} (a + 2b)(a - b)

Step-by-step explanation:

Assuming you require the expression to be factored

Given

\frac{1}{2} a² + \frac{1}{2} ab - b² ← factor out \frac{1}{2} from each term

= \frac{1}{2} (a² + ab - 2b²) ← factor the quadratic

Consider the factors of the coefficient of the b² term(- 2) which sum to give the coefficient of the ab- term (+ 1)

The factors are + 2 and - 1, since

2 × - 1 = - 2 and 2 - 1 = + 1, thus

a² + ab - 2b² = (a + 2b)(a - b) and

\frac{1}{2} a² + \frac{1}{2} ab - b² = \frac{1}{2}(a + 2b)(a - b)

5 0
3 years ago
What is the image of (-8, 2) after a reflection over the y-axis?
BARSIC [14]

Answer:

(8, 2)

Step-by-step explanation:

When taking a point and reflecting it over the y-axis, the x coordinate turns into its opposite.

(-8, 2) ⇒ (8, 2)

4 0
2 years ago
Maisie bought a house.
sergeinik [125]

Answer:

55.52+10=65.52%

65.52 divide 3=21.84%

Ans:21.84%

7 0
3 years ago
What is 6.213 as a mixed number
Ira Lisetskai [31]
6.213 as a mixed number would be 6 and 213/1000.

all you do to convert it to a mixed number is look at how many numbers are after the decimal.

since theres 3 numbers, that means it would be in the thousands place
3 0
3 years ago
In a certain survey of 1,024 ​adults, 83​% reported having more than one television at home. Find the actual number of responden
irina [24]

Answer:

soorrry dont know butt am suRe you wil get the answer from someone else sooonnn

Step-by-step explanation:

6 0
3 years ago
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