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Oksi-84 [34.3K]
3 years ago
12

Write an equation for the following: y varies directly with x. Find K when x=4 and y=5.

Mathematics
1 answer:
Naya [18.7K]3 years ago
6 0

Answer:

4/5

Step-by-step explanation:

y varies as x

y=kx

k=x/y

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What is the perimeter of ABC?
lara31 [8.8K]

Answer:

B. 36+12sqrt(2)

Step-by-step explanation:

We can use Pitagoras' theorem to find the height of the triangle

15^2=9^2 + h^2

h^2=144

Lets apply square root to the whole equation:

sqrt(h^2=144)

h=12

With the height, we can now find the length of AC.

Sin(45)=12/AC.

AC=12/Sin(45)=24/sqrt(2)=12*sqrt(2) if we rationalize.

Now, lets fin the missing segment between B and C (call it)

where 9+x= BC

Cos(45)=x/AC

x=cos(45)*AC=12

Now, the perimeter is the sum of all its sides

AB+AC+BC=15+12*sqrt(2)+9+12=36+12sqrt(2)

5 0
4 years ago
Least common denominator of 7 and 343
ehidna [41]
Rewriting input as fractions if necessary:

7/1, 343/1

For the denominators (1, 1) the least common multiple (LCM<span>) is </span>1.

Therefore, the least common denominator (LCD<span>) is </span>1.

<span>Rewriting the original inputs as equivalent fractions with the </span>LCD:
<span>7/1,  343/1</span>
6 0
4 years ago
An obtuse angle in the figure is_____
Vesna [10]

The obtuse angel is ∠AOC. This is obtuse because it is larger then 90 degrees

Hope this helped!

~Just a girl in love with Shawn Mendes

4 0
4 years ago
Read 2 more answers
Help which one should I choose
pashok25 [27]

Answer:

B

Step-by-step explanation:

4 0
3 years ago
What is the answer to this ???
ehidna [41]
The answer is x=K/b + 2/b.
4 0
3 years ago
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