3 years ago

What is the value of the n in the equation 4x = - 36

Mathematics

1 answer:

Dominik [7]3 years ago

5 0

Answer:57

Step-by-step explanation:

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1/4 of his candy bar was left because 1/6 coverts to 2/12 and 7/12+2/12= 9/12 which leaves 3/12 left which is equivalent to 1/4

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3 years ago

Which equation correctly uses the law of cosines to solve for y? 92 = y2 + 192 – 2(y)(19)cos(41°) y2 = 92 + 192 – 2(y)(19)cos(41

FrozenT [24]

Answer: Fourth option: y^2=9^2+19^2-2(9)(19) cos(41°)

The law of cosines to solve for one side is:
c^2=a^2+b^2-2ab cos C
We must know the other two sides (a and b) and the angle between these sides (angle C, the opposite to the side that we want to determine)

In this case c=y, a=9, b=19, and C=41°, then:
y^2=9^2+19^2-2(9)(19) cos (41°)

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3 years ago

Read 2 more answers

Use transformations to solve the equation

Schach [20]

Hello!

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

First, divide by 5 from both sides.

$\frac{c*5}{5}=\frac{30}{5}$

Simplify.

$c=6$

Answer⇒⇒⇒⇒option C. c=6

Hope this helps!

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-Charlie

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3 years ago

A first order decomposition reaction has a half-life of 64yr. What percentage of the original amount is left after 135years. (gi

vlabodo [156]

Answer:

23.2%

Step-by-step explanation:

First we need to find how many half lives 135 years is:

135 ÷ 64 = 2.109375

Now we divide 100% by 2 to the power of the number of half lives. This is how you calculate the percentage of the original amount left. If you have the original mass, you can substitute that in instead of 100%:

100 ÷ $2^{2.109375}$ = 23.1747390635

To 1 decimal place it is 23.2%

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4 years ago

Maths: A motorist covers 3km in 4minutes.what is his average speed in ms-1?

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Answer:

0.75m/s

Step-by-step explanation:

speed = d/t

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3 years ago

What is the value of the n in the equation 4x = - 36​

What is the value of the n in the equation 4x = - 36