3 years ago

What number must you add to complete the square for x^2 + 4x = 15 ?

Mathematics

1 answer:

snow_lady [41]3 years ago

8 0

Answer: 4

Step-by-step explanation: Apex answer I just took the test.

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Answer:

125

Step-by-step explanation:

Sum of Exterior Angles must add to 360 so

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$235 + x = 360$

$x = 125$

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3 years ago

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Answer:

Last Option

Step-by-step explanation:

We have a triangle and we know its three sides.

We want to find one of your anguos. Then we use the cosine theorem.

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Where

$c = 14\\a = 11\\b = 19$

Now we solve for x from the equation

$c ^ 2 = a ^ 2 + b ^ 2 -2abcosx\\\\\\14^2 = 11^2 + 19^2 -2(11)(19)cosx\\\\14^2 -11^2 -19^2 = 2(11)(19)cosx\\\\-286=2(11)(19)cosx\\\\cosx = \frac{-286}{2(11)(19)}\\\\x = arcos(\frac{-286}{2(11)(19)})\\\\x = 46.8\°$

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2 years ago

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Trapezoid EFGH ~ trapezoid MNOP. Find the value of y.<br><br> answers in the picture

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Answer:

Step-by-step explanation:

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2 years ago

I need help on this problem i dont know if the answer is: 16 or 48,but i dont know for sure so if my guess if wrong please tell

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Answer:

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Step-by-step explanation:

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2 years ago

- 1/2 - 6/7 simplest form.?

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U find a common denominator which would be 14 :7/14-12/14
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