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4 years ago

How do you solve this problem? With work!!

Mathematics

2 answers:

Evgesh-ka [11]4 years ago

7 0

You would put 9 times v because you are multiplying it to the 9 and you do not know what v is then you would divide it by 3 and get your answer so for example if you should have gotten 9 times v = 72 then 72 divided by 3 = 24 and 24 divided by 3 = 8

Ede4ka [16]4 years ago

7 0

The goal to solving this problem is finding the value of v by isolating it on one side, meaning that you must rid of the constant terms on that particular side of the equation. Since v + 9 is being divided by 3, you must first eliminate the 3 by multiplying that side of the equation by 3, and whatever you do to one side of an equation you must do it to the other side as well, so you also multiply 8 by three. This leaves the equation as v + 9=24. Now you must cancel out the 9 that’s one the side of the equation with the variable, so subtract both sides of the equation by 9. This leaves you with v=15. Hope this helps.

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2 years ago

I need help working question 8. I don't understand how to start it

Lina20 [59]

Why don't you first try to use the cosine law to solve for an angle and then make use of the sin law to solve for the remaining angles.

Cosine law

C^2 = A^2 + B^2 - 2AB(cos C)
Solve for cos C, and then take the inverse of the trig ratio to solve for the angle.

Then set up a proportion like you have done using the sin law and solve for another angle. Knowing the sum of all angles in a triangle add up to 180 degrees, we can easily solve for the remaining angle.

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3 years ago

Find the values for c and d

baherus [9]

Answer:

c=-5

d=1

Step-by-step explanation:

$(cy^2)(4y^d)=-20y^3$

I'm going to reorder the left-hand side. Multiplication is commutative.

$(4c)(y^2y^d)=-20y^3$

Since the bases are the same in $y^2y^d$ and the operation is multiplication, I'm going to add the exponents giving me:

$4cy^{2+d}=-20y^3$

So this implies we have two equations to solve:

$4c=-20$ and $2+d=3$

So the first equation can be solved by dividing both sides by 4 giving you $c=-5$ .

The second equation can be solved by subtracting 2 on both sides giving you $d=1$ .

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4 years ago

Gary bought an MP3 player at a 20% discount sale for $40. What was the original price of the MP3 player?

marta [7]

40*.20=8.00
40 - 8=32
answer32
hope you understand.
explain:]
40*.20=8
and second time i do ( - ) becouse they said 20% discount discount main is ( - )
so i do ( - ) i think now you understand.

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3 years ago

1.Find the area of a trapezium with parallel sides of

Nana76 [90]

Answer:

The area of the trapezium is $74.8\ cm^2$