3 years ago

HELP! Will be giving branliest!!!!

Mathematics

1 answer:

Elina [12.6K]3 years ago

7 0

Answer:

A is correct

Step-by-step explanation:

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Solve the system of equations.

Alenkasestr [34]

Step-by-step explanation:

<u>Step 1: Substitute x from the second equation into the second one</u>

$2x - 9y = 14$

$2(-6y + 7) - 9y = 14$

$(2 * -6y) + (2 * 7) - 9y = 14$

$-12y + 14 - 9y = 14$

$-21y +14 - 14 = 14 - 14$

$-21y/-21 = 0 / -21$

$y = 0$

<u>Step 2: Substitute y into the second equation</u>

$x = -6y + 7$

$x = -6(0) + 7$

$x = 0 + 7$

$x = 7$

Answer: $x = 7, y = 0$

4 0

4 years ago

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Danielle can run one mile is 8.835 minutes. Alex can run one mile is 9.75 minutes. How much

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Answer:

Alex have to have 18.585 minutes to be running at the same amount of miles like daniella

Step-by-step explanation:

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4 years ago

Charles charges $25 per lawn to mow lawns. If 25x represents the amount of money he earned last week, what does x represent?

Marta_Voda [28]

C, the number of lawns he mowed

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3 years ago

18. Analyze Justify how you can use the number of negative factors to

harkovskaia [24]

Step-by-step explanation:

so u will basically use the fact that if it is an even number of negative integers than it is positive and if it is odd then it is negative

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3 years ago

A couch is selling for $450. After not selling for 4 months, it is marked down to $427. What is the percent markdown?

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Answer:

5.1%

Step-by-step explanation:

450-427=23

23/450 × 100 = 5.1111111

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3 years ago