How to rewrite -7x + 5y = -3 in standard form

Answers

Answer 1

Answer:

Answer:

7x - 5y = 3

Step-by-step explanation:

The Standard Form formula is Ax + By = C, however, technically A should not be negative, and since the original is already written in an usually accepted version of Standard Form, I would assume you would just want to multiply the entire equation by -1 making the A a positive number.

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a train can travel 1230 miles in 5 hours. what is the unit rate that this train is traveling per hour? _____ miles per hour.

Answers

unit rate = 1230 miles / 5 hours = 246 miles per hour.

which of the expressions doe not contain any like terms? a. 2x2+3x-4x+2 b. xy+yz-17 c. x2+x2-2x-x2 d. 4+8+y

Answers

b. does not contain any like terms, because xy, yz, and -17, do not share any common variables.

Hope this helps!

The answer is B it does not have any of the other terms

in one baseball season, peter hit twice the difference of the number of home runs alice hit and 6. altogether, they hit 18 home runs. hohw many home runs did each player hit that season?

Answers

Let Peter's hit be x and Alice's runs be y.
x = 2(y - 6) . . . (1)
x + y = 18 . . . (2)

Putting (1) into (2) gives,
2y - 12 + y = 18
3y = 18 + 12 = 30
y = 30/3 = 10
x = 2(10 - 6) = 2(4) = 8

Therefore, Peter hit 8 home runs and Alice hit 10 home runs.

Hannah has a biased coin.She is going to throw the coin once.
The probability of getting heads is 0.7
Work out the probability of getting tails.

Answers

There is a 90% chance of getting tails so yea 0.99

HELP !!!!!!!!!!!!!!!!

Solve by applying the counting principle.

You have 5 shirts and 3 pairs of pants and 4 ties.

How many outfit are possible?

Answers

Well, it depends.
You can only wear 3 outfits unless you wear your pants twice. Then you will have five outfits because ties don't normally get washed til the second time you wear it.

Carlos invested part of $3,000 in a 10% certificate account and the rest in a 6% passbook account. The total annual interest from both accounts is $270. How much did he invest at 6%?

Answers

(3000-n)*(10/100)+n*(6/100) = 270
300 - 0.1n + 0.06n = 270
300 - (0.1n - 0.6n) = 270
300 - 0.04n = 270
-0.04n = -30
n = -30/-0.04 = 750
Investment at 6% = 750
Investment at 10% = 3000 - 750 = 2250
And to check just plug it back in so,
(0.06*750)+(0.1*2250) = 270

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