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3 years ago

How do I do algebra

1 answer:

tatiyna3 years ago

5 0

Know the order of operations. One of the trickiest things about solving an algebra equation as a beginner is knowing where to start. Luckily, there's a specific order for solving these problems: first do any math operations in parentheses, then do exponents, then multiply, then divide, then add, and finally subtract. (Wikihow)
PEMDAS
parenthesis
exponents
multiply
divide
add
subtract

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What are the answer and steps to a^3 - 3a

tresset_1 [31]

Answer:

3a=3

Step-by-step explanation:

ok there you go

6 0

3 years ago

What is the answer to x-1=-5-x

maria [59]

Answer:

$x=-2$

Step-by-step explanation:

We have the equation $x-1=-5-x$

In order to solve for x, we need to get all of the x's to one side and everything else to the opposite side

$x-1=-5-x$

First, we can add 1 to each side

$x=-4-x$

Now, we can add x to each side

$2x=-4$

Next, we can divide each side by 2

$x=-2$

And here is our answer.

8 0

3 years ago

What number will the function return if the input is 15.4?

wlad13 [49]

The rule of the function is to multiply the input by 3, since one yard is equal in length to three feet.

So, if the input is 15.4, the output will be

$f(x)=3x \implies f(15.4)=3\cdot 15.4 = 46.2$

4 0

3 years ago

Cookies are sold singly or in packages of 3 or 9. With this packaging, how many ways can you buy 18 cookies?

tresset_1 [31]

I believe 5 different ways. The options being two packs of 9-one pack of 9 and 3 packs of 3- 1 pack of 9, 2 packs of 3 and 3 singles- one pack of 9, one pack of 3, and 6 singles- and then one pack of 9 and 9 singles.
Hope this helped!

8 0

3 years ago

Area of a rectangle 8cm long and 4cm in height. please tell me how to do this also, I'm so confused.

Tema [17]

The area of a rectangle is easy to compute.
Area = length times height
Area = 8 cm * 4 cm = 32 square centimeters

6 0

4 years ago