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cestrela7 [59]
3 years ago
8

PLEASE HELP WITH THE FOLLOWING. WILL GIVE BRAINLIEST. THANK YOU

Mathematics
1 answer:
Marina86 [1]3 years ago
4 0

Answer:

<h2>50.8°</h2>

Step-by-step explanation:

First, we need to use the Pythagorean Theorem to find the third side. We will then use the law of cosines to find the angle.

2√15² = 2√6² + b²

60 = 24 + b²

Subtract 24

36 = b²

b = 6

Now, that we have all three sides, we will use the law of cosines to figure out the angle.

c² = a² + b² - 2abCosC°

Substitute the values in.

6² = 2√15² + 2√6² - 2(2√15)(2√6)CosC°

36 = 60 + 24 - 2(37.947331922)CosC°

36 = 60 + 24 - 75.894663844CosC°

36 = 84 - 75.894663844CosC°

Subtract 84

-48 = -75.9CosC°

0.63241106719 = CosC°

Arccos (0.63241106719) = 50.77176844°

The largest acute angle is approximately 50.8°

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Andreas93 [3]

Answer:

y=-x+5

Step-by-step explanation:

first, let's find the slope of the line (m), using the equation (y2-y1)/(x2-x1)

here are the given points: (4,1) and (8,-3)

label the points:

x1=4

y1=1

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y2=-3

now substitute into the equation

m=(-3-1)/(8-4)

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the slope of the line is -1.

Now, use slope-point form, which is y-y1=m(x-x1)

substitute the numbers into the equation

y-1=-1(x-4)

do distributive prop

y-1=-x+4

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the equation of the line is y=-x+5

hope this helps :)

7 0
3 years ago
Help me ! I rly need to finish this home work before the dead line the deadline is in 30 mins plz help
storchak [24]

Answer:

The answer is a= 15

Step-by-step explanation:

First, you multiply both sides by 5. 5*3 = 15 and a/5*5 = a, since 5 and 5 cancels out each other. This is optional, then you flip the equation to get a= 15. Hope this helps.  

8 0
4 years ago
A tabletop in the shape of a trapazoid have an area of 6550 square centimeters. its longer base measures 115 centimeters, and th
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3 0
3 years ago
Factor COMPLETELY the expression 2x^3 - 250
AURORKA [14]

Answer:

2 (x - 5) (x^2 + 5 x + 25)

Step-by-step explanation:

Factor the following:

2 x^3 - 250

Factor 2 out of 2 x^3 - 250:

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x^3 - 125 = x^3 - 5^3:

2 (x^3 - 5^3)

Factor the difference of two cubes. x^3 - 5^3 = (x - 5) (x^2 + x 5 + 5^2):

2 (x - 5) (x^2 + 5 x + 5^2)

5^2 = 25:

Answer: 2 (x - 5) (x^2 + 5 x + 25)

5 0
4 years ago
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Firlakuza [10]
A great way to organize this would be to make a t-chart!

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3 0
3 years ago
Read 2 more answers
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