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Alexeev081 [22]
3 years ago
5

Factorise x2 + 5x - 84

Mathematics
1 answer:
lana [24]3 years ago
7 0

(x - 7)(x + 12)

Answer:

{x}^{2}  + 5x - 84 \\  {x}^{2}  + 12x - 7x - 84 \\ x(x + 12) - 7(x + 12) \\ (x - 7)(x + 12)

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If line a is perpendicular to line b, and triangle ABC is reflected over line a, and then reflected over line b, the net transfo
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Answer:

rotation

Step-by-step explanation:

Reflecting over a gives us the triangle on the left.  Then reflection over b gives us the green triangle below the line.  This is a rotation of 180 degrees

8 0
4 years ago
On Aaron’s farm, 1/10 of the animals are cows, ⅖ of the animals are chickens,
Ray Of Light [21]

Answer:

There are 5 pigs on Aaron's farm

Step-by-step explanation:

1. Start with 40 animals

2. 1/10 of the animals are cows, so divide 40 by 10 and you will find that 4 of the animals are cows

3. 2/5 of the animals are chickens, so multiple 40 by 2 to get 80 and then divide 80 by 5 and you will find that 16 of the animals are chickens

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3 years ago
Each of the 6 cats in a pet store was weighed. Here are their weights (in pounds):
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Mean: add up all numbers and divide by the number of data
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7 0
3 years ago
Mike rode his bike 3 3/4 miles in 3/4 of an hour. what was his average speed in miles per hour hour?
kobusy [5.1K]

The answer is 5 because each quarter of an hour is 1 1/4 and 1 1/4 x 4 = 5

4 0
4 years ago
Read 2 more answers
The circumference of a circle is 69.08 millimeters. What is the circle's diameter? Use 3.14 for ​.
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Answer: 22

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3 years ago
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