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4 years ago

Which is the best thing to do as a first step in using substitution to solve the system of equations?

Mathematics

1 answer:

Mnenie [13.5K]4 years ago

3 0

Hey there !

Check the attachment.
Hope it helps you :)

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Jaylynn was buying new mascara. She bought it on sale for $5.56. If the price represents a 20% discount from the original price,

Len [333]

X-0.20x=5.56
Solve for x
So the original price is
X=6.95

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4 years ago

Witch one is the correct answer to the problem

schepotkina [342]

Answer:

this one

.............

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4 years ago

What is the smallest number greater than 100 that is :

krek1111 [17]

I'd start by listing out the multiplies of all three past 100, like this:
102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130
104, 108, 112, 116, 120, 124, 128, 132, 136
110, 120, 130, 140
Now it's just a matter of finding the number that is the same for all three of them, which is 120.

8 0

3 years ago

Read 2 more answers

Which expression is equivalent to −1/ 12x−1 /3?

alexandr402 [8]

Answer:

$\frac{1}{12} (-x-4)$

Step-by-step explanation:

the expression we have is:

$-\frac{1}{12} x-\frac{1}{3}$

To find an equivalent expression, it would be helpful to express 1/3 so that it has a 12 in the denominator:

$\frac{1}{3}=\frac{4}{12}$

so we substitute this:

$-\frac{1}{12} x-\frac{4}{12}$

and now we have 1/12 in both terms :

$-\frac{1}{12}x-\frac{1*4}{12}$

so we can factor it (we take it out of each term: in the first we are left with -x and in the second with -4):

$\frac{1}{12} (-x-4)$

the equivalent expression is: $\frac{1}{12} (-x-4)$

5 0

4 years ago

Help. - Math - ^ Photo ^

lesya [120]

Is you do the answer first 725 times 493 it would equal 357,425
then i just did lana first because it was easy and it came out to 357,425
tamir way of solving the problem was wrong equaling 281,815

6 0

3 years ago