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True [87]
3 years ago
14

The first three steps of completing the square to solve the quadratic equation x^2+4x-6=0 are shown below.

Mathematics
1 answer:
ad-work [718]3 years ago
5 0
Take the sqrt of both sides of <span>(x+2)^2=10:

x+2 = plus or minus sqrt(10)

Solve for x:  x = -2 plus or minus sqrt(10)

Evaluate x:  x = -2 + sqrt(10)  AND  x = -2 - sqrt(10)       (answers)

</span>
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I need help with this thanks
xxMikexx [17]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
NO LINKS!!! Find the measurement indicated. Round your answer to the nearest tenth.<br><br>​
My name is Ann [436]

Answer:

<u>Solutions given;</u>

<u>Using cosine rule</u>

b²=a²+c²-2*a*c*cos B°

b²=15²+8²-2*15*8*cos39

b²=102.48

b=\sqrt{102.48}

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b=10.1

<u>Using sine rule</u>

\frac{sin A}{BC} = \frac{sin B}{AC}  =\frac{sin C}{AB}

\frac{sin 29°}{15}  =\frac{sin C}{8}

<u>Doing criss cross multiplication</u>

Sin C=\frac{sin 29°}{15} ×8

m<C=Sin -¹(0.29)

m<C=14.98

<u>m<C=15°</u><u>is</u><u> </u><u>a</u><u> </u><u>required</u><u> </u><u>answer</u><u>.</u>

4 0
2 years ago
It costs $15 per hour to rent a bike. The additional fee for a helmet is $3 for the entire ride.
STatiana [176]

Answer:

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3 0
3 years ago
What percent of a circle is 3/6 of a circle
Vlad1618 [11]
50%
You have half of 6 so the percentage would be half of 100
8 0
3 years ago
Read 2 more answers
-15
Sloan [31]
Try the first option if that's an option
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