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tangare [24]
3 years ago
6

How do i solve 2k^2-5k-18=0

Mathematics
1 answer:
devlian [24]3 years ago
5 0

Answer:

factor left the side of the equation

(2k_9)(k+2)=0

set factors equal to 0

2k_9=0 or k+2=0

the answer is K= 9/2 or K =-2

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JL is a common tangent to circles M and K at point J. If angle MLK measures 61ᵒ, what is the length of radius MJ? Round to the n
Sladkaya [172]
3.122

The process to getting this comes in many steps. Firstly, you need to find the angles for JLK and MLJ. To find JLK use the arcsin function using the opposite side and the hypotenuse. 

Arcsin(Opp/Hype) = JLK
Arcsin(.5) = JLK
30 degrees = JLK

This means MLJ = 31 degrees since they add up to 61 degrees. 

Now we need to find the length of LJ, which we can do using the Pythagorean Theorem. 

3^2 + JL^2 = 6^2
9 + JL^2 = 36
JL^2 = 27
JL = \sqrt{27}

Now that we have the angle of MLJ and the length of JL, we can use the tangent function to find MJ.

Tan(angle) = opp/adj
Tan(31) = MJ/\sqrt{27}
\sqrt{27}Tan(31) = MJ
3.122 = MJ
7 0
3 years ago
Read 2 more answers
Can someone help me with this please
Arturiano [62]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Given the ratio of 8 ounces to 1 cup, how many ounces are in 4 cups?
malfutka [58]

Answer:

There are 32 ounces in 4 cups

6 0
2 years ago
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BaLLatris [955]
Simplify the following:
sqrt(5) - 16 + sqrt(15) - 8

Grouping like terms, sqrt(5) - 16 + sqrt(15) - 8 = sqrt(15) + sqrt(5) + (-16 - 8):
sqrt(15) + sqrt(5) + (-16 - 8)

-16 - 8 = -24:
Answer:  sqrt(15) + sqrt(5) + -24
5 0
3 years ago
A bookshop sets the marked price of the book 25% higher than its cost, and then sold it at 10% discount
mestny [16]

Answer:

$405 - Can u plz give me the brainliest answer if possible? Plz!!!!!!!!!!!!!!

Step-by-step explanation:

360 x 0.25 = 90

360 + 90 = 450

450 x 0.1 = 45

450 - 45 = 405

Have a nice day!!!!!! :-)

<u>KA</u>

7 0
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