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2 years ago

Helpppppp meeeee pleaseeee

Mathematics

1 answer:

anastassius [24]2 years ago

7 0

Answer:

8F+5K=37.62

it just wants you to make an equation

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What is that value is (5)squared

Arisa [49]

5 squared is the same as 5^2 which is 5*5. The answer is 25.

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2 years ago

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Use the Law of Cosines to find the values of x and y. (PLEASE HELPPP!!!!)

vredina [299]

Answer:

$x = 49.8^\circ\\y = 54.6^\circ$

Step-by-step explanation:

Kindly refer to the image attached in the answer region for labeling of triangle.

AB = 16

BC = 19

AC = 15

$\angle ABC = x^\circ\\\angle ACB = y^\circ$

We have to find the angles x and y i.e. $\angle B \text{ and }\angle C$ .

Formula for cosine rule:

$cos B = \dfrac{a^{2}+c^{2}-b^{2}}{2ac}$

Where

a is the side opposite to $\angle A$ ,

b is the side opposite to $\angle B$ and

c is the side opposite to $\angle C$ .

$\Rightarrow cos x = \dfrac{19^{2}+16^{2}-15^{2}}{2 \times 19 \times 16}\\\Rightarrow cos x = \dfrac{392}{608} \\\Rightarrow x = 49.8^\circ$

Similarly, for finding the value of y:

$cos C = \dfrac{a^{2}+b^{2}-c^{2}}{2ab}\\\Rightarrow cos y = \dfrac{19^{2}+15^{2}-16^{2}}{2 \times 19 \times 15}\\\Rightarrow cos y = \dfrac{330}{570}\\\Rightarrow y = 54.6^\circ$

Hence, the values are:

$x = 49.8^\circ\\y = 54.6^\circ$

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2 years ago

Please help me with this question!!

lidiya [134]

Answer:

Step-by-step explanation:

Mabye 7?

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2 years ago

during Sonia's trip across the country that she travel 2884 miles her trip took 7 Days find a unit rate to represent the average

wolverine [178]

You could find the unit rate by dividing 2884 miles by 7 days to get 412 miles/ day

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3 years ago

P l e a s e h e l p (Only spaced it cus I needed 20 characters, danke)

GenaCL600 [577]

Answer:

y = 63

Step-by-step explanation:

A straight line is equal to 180 degrees.

180 = 2y - 18 + y + 9

180 = 3y -9

189 = 3y

189/3

y = 63

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2 years ago

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