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3 years ago

Solve the equation and state any extraneous solutions. Thanks! :)

Mathematics

1 answer:

lesya [120]3 years ago

5 0

Answer:

I believe the answer is m=30

Step-by-step explanation:

How I got this answer:

first cross multiply

9(m+3) = 11(m-3)

9 m - 11 m = -33 -27

-2m = -60

m= 30 - (Check if the solution is in the defined range).

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To celebrate getting a new job, Marco went out for a dinner that cost $100. If the local sales tax is 6% and Marco left a 15% ti

lorasvet [3.4K]

9514 1404 393

Answer:

$121.00

Step-by-step explanation:

Together, the tax and tip were 6% and 15% of $100, or 21% of $100. That means the total cost of Marco's mean was ...

(1 +21%) × $100 = 1.21×$100 = $121.00

5 0

3 years ago

The price of an item has dropped to $63 today. Yesterday it was $140. What was the percentage decrease?

den301095 [7]

Given:

a.) The price of an item has dropped to $63 today.

b.) Yesterday it was $140.

For us to be able to determine the percentage decrease, we will be using the following formula:

$\text{ Percentage Decrease = }\frac{\text{ Original Price - Present Price}}{\text{ Original Price}}\text{ x 100}$

We get,

Original Price = $140

Present Price = $63

$\text{ Percentage Decrease = }\frac{\text{ Original Price - Present Price}}{\text{ Original Price}}\text{ x 100}$ $\text{ = }\frac{\text{ 140 - 63}}{\text{ 140}}\text{ X 100}$ $\text{ = }\frac{77}{140}\text{ X 100}$ $\text{ = }0.55\text{ x 100}$ $\text{Percentage Decrease = }55\text{\%}$

Therefore, the decrease of the price in percentage is 55%.

4 0

2 years ago

Someone help me please

Keith_Richards [23]

Answer:

144 tiles

Step-by-step explanation:

if the room is 144 feet squared and one tile is one square foot

6 0

3 years ago

-8× + 40 >-16 please help

Vesnalui [34]

Answer:

Step-by-step explanation:

$- 8x + 40 > - 16 \: \: \: \: \: add \: - 40 \: to \: both \: sides \\ \\ - 8x + 40 - 40 > - 16 - 40 \\ - 8x > - 56 \\ divide \: both \: sides \: on \: - 8 \: and \: change \: the \: sign \\ \\ x < \frac{ - 56}{ - 8 } \\ x < 7$

8 0

3 years ago

I think it’s the first one, am I correct? <br><br> Explain!

zavuch27 [327]

Answer:

yes by SAS

Step-by-step explanation:

EN = RP

EM = PQ

Angle N = Angle R

8 0

3 years ago