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2 years ago

Find a number such that its two-third is equal to 5/4

Mathematics

1 answer:

levacccp [35]2 years ago

7 0

Answer:

x = 15/8.

Step-by-step explanation:

Create an equation, let the number be x:

2/3 * x = 5/4

Now we multiply both sides by 3/2

3/2 * 2/3 x = 5/4 * 3/2

x = 15/8.

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Step-by-step explanation:

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1 year ago

I don’t understand this one

Masja [62]

Answer:

see below

Step-by-step explanation:

Put -1 where x is in each expression and evaluate it.

You will find that the expression is zero when the numerator is zero. And you will find the numerator is zero when it has a factor that is equivalent to ...

(x +1)

Substituting x=-1 into this factor makes it be ...

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Evaluating the first expression, we have ...

$\dfrac{4(x+1)}{(4x+5)}=\dfrac{4(-1+1)}{4(-1)+5}=\dfrac{4\cdot 0}{1}=0$

This first expression is one you want to "check."

You can see that the reason the expression is zero is that x+1 has a sum of zero. You can look for that same sum in the other expressions. (The tricky one is the one with the factor (x -(-1)). You know, of course, that -(-1) = +1.)

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3 years ago

Someone halp what 1+1 idk eee

vodomira [7]

Answer:

Step-by-step explanation:

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3 years ago

Solve for r<br> rs / a - 3 = k

Jobisdone [24]

You can isolate r to one side of the equation by dividing by adding three, dividing by s, multiplying by a and you get:

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2 years ago

What is the area of a triangle

Lady bird [3.3K]

The area of a triangle is 1/2 b/h. So what you do is you find base and height, multiply them together and whatever answer you got, you divide by 2.

Example:
A= 1/2 (b x h)
A= 1/2 (4 x 6)
A= 1/2 (24)
A= 12

Hope this helps!

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3 years ago