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Viefleur [7K]
3 years ago
8

What number would you add to both sides of x2 + 7x = 4 to complete the square? 22 72

Mathematics
2 answers:
Studentka2010 [4]3 years ago
6 0

In order to complete the square with the numbers that you have, you would have to add 12.25 to both sides.

In order to complete the square, you always have to add half of the x coefficient squared. Since the x coefficient is 7, we take half of that (3.5) and square it to get 12.25.

Harlamova29_29 [7]3 years ago
5 0

(7/2)^2

is the answer

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Anastasy [175]
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4 0
3 years ago
A helicopter is hovering 110 feet in the air over a landing pad. If a man sees the helecopter at an angle of elevation of 29°, w
Pavel [41]
See the attached figure to better understand the problem

we know that

tan 29°=AC/CB--------> CB=AC/tan 29°
AC=110 ft 
CB--------> <span>how far the man is from the helicopter landing pad
</span>so
CB=AC/tan 29°----------> CB=110/ tan 29°----------> CB=198.45 ft

the answer is
the man is  198.45 ft  from the helicopter landing pad 

3 0
3 years ago
Lena drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 6 hours. When Lena drove h
tekilochka [14]
I believe the answer is 88
7 0
3 years ago
Approximately 4% of silicon wafers produced by a manufacturer have fewer than two large flaws. If Y, the number of flaws per waf
Doss [256]
Y ~ Po (λ)

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Plug into the pdf for Po(λ), and solve for λ

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6 0
3 years ago
There is a 50% chance a coin lands on heads and a 50% chance the coin lands on tails what is the probability that the coin lands
Olegator [25]

Since the probability of the coin landing leads is 1/2, simply cube 1/2 to arrive at your answer: 1/8.


You cube 1/2 because you must land heads three times in a row and each flip is independent from other flips.


4 0
3 years ago
Read 2 more answers
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