Explain why it is recommended that you combine like terms first when solving equations.

2 answers:

8 0

You would get different answers if you didn't follow the rule of PEMDAS, or the order of operations: Parentheses, Exponents, Multiply, Divide, Add, and Subtract, in that order.

8090 [49]2 years ago

6 0

It makes it easier and les likely to make mistkae

would you rather do

3(x+4-2+2x) or
3(3x+2)

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The local bike shop sells a bike and accessories package for $320 if the bike is worth 7 times more than the accessories,how muc

sdas [7]

So, bike=b and accessories=a.

b+a=320

Since the bike is worth 7 times more than the accessories, the b would turn into 7a (because 7 times the cost of accessories is the cost of the bike).

The equation would now turn into 7a+a=320.

Solve for a.

7a+a=320
8a=320
a=40

Now that you know the cost of the accessories, you multiply that 40
by 7 to get the cost of the bike.

40(7)
280

The cost of the bike is $280.
The cost of the accessories are/is $40.

6 0

2 years ago

Mario goes out for his morning run. He starts out by running north for five miles, where he takes a 5 min rest. Then he heads ea

PIT_PIT [208]

Step-by-step explanation:

He goes 20 miles in total so knowing that you can multiply 20 by 6 which is 120. Then you can add the break on giving you 125 min.

7 0

2 years ago

Convert 5 whole number and 7 over 8 into an improper fraction

Len [333]

Answer: 47/8

Step-by-step explanation: To write a mixed number as an improper fraction, first multiply the denominator by the whole number and then add the numerator. Finally, we will put our new number over our old denominator and we have our answer which is 47/8.

Therefore, $5\frac{7}{8}$ can be rewritten as the improper fraction 47/8.

7 0

2 years ago

$800 principal earning 7%, compounded annually, after 4 years

xz_007 [3.2K]

800(1+7)∧4
it will be $1048.63

4 0

2 years ago

I am having a conflict with my family what is 7-1×0+3÷3 = ?

ryzh [129]

Follow PEMDAS.

Parenthesis
Exponents
Multiplication & Division
Addition & Subtraction

Alright, do multiplication first, then division. Then, do subtraction then addition.

$7-1*0+3/3= \\ 7-0+3/3= \\ 7 - 0 + 1= \\ 7 + 1 = 8 \\ 7-1*0+3/3 =8$

Hope this helped!

6 0

2 years ago