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pychu [463]
2 years ago
14

Solve. X-9 = 12 .....

Mathematics
2 answers:
Lelechka [254]2 years ago
5 0

Answer:

x=21

Step-by-step explanation:

x=9+12 x=21

kumpel [21]2 years ago
3 0

Answer:

Step-by-step explanation:

X-9=12

Reverse the operation into

9+12=x

9+12=21

Now check

21-9=12

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David is looking for the best deal on a laptop that regularly costs $719. Help him compare the price of the laptop at a
NemiM [27]

Answer:

A) $287.60.

B) $323.55.

C) David would pay more for the laptop at the store.

Step-by-step explanation:

A) Given that the store's website is offering the laptop at a 60% discount off the regular price of $ 719, ignoring tax and shipping, the sale price is obtained through the following calculation:

100 - 60 = 40

719 x 0.40 = X

287.6 = X

Therefore, in this case the sale price would be $ 287.6.

B) Since the store is having a sale, offering a 50% discount off the regular price of the laptop, and David also has an in-store-only coupon for an additional 10% off the sale price, ignoring tax, the price of sale is obtained through the following calculation:

(719 x 0.5) x 0.9 = X

359.5 x 0.9 = X

323.55 = X

Thus, the sale price in the present case would be $ 323.55.

6 0
3 years ago
Solve the equation -3k+6=15
Assoli18 [71]

Answer:

K= -3

Step-by-step explanation:

-3k+6=15

     -6   -6

-3k=9

/-3  /-3

k=-3

subtract 6 from both sides.

divide each side by -3 to get K alone

-3 is your answer.

8 0
2 years ago
Please help me with this question! Thank you :)
madreJ [45]

Answer:

y=x-3

Step-by-step explanation:

Graph y=x-5 and the point (1,-2). You want your slope to be the same for the lines to be parallel. The slope in the given equation is 1/1. Type into a graphing calculator y=x- and pick a number greater than negative five since the point (1,-2) is above the given line. Guess and checking reveals -3 to be the correct answer. Therefore, your answer is y=x-3.

5 0
2 years ago
Is the following conditional true?
liubo4ka [24]
Yes

Explanation:
2x9=18 and 1+8=9

The pattern repeats
6 0
3 years ago
Read 2 more answers
47 1/2 of what number is 190
Grace [21]
47 \frac{1}{2} \cdot x=190\\ \\ \frac{47\cdot2+1}{2} \cdotx=190\\ \\ \frac{95}{2} \cdot x=190\ /\cdot  \frac{2}{95} \\\\x= \frac{190}{1} \cdot  \frac{2}{95}\\ \\x=2\cdot2\\ \\x=4
3 0
3 years ago
Read 2 more answers
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