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Alex777 [14]
2 years ago
9

On Monday John bought 7 apples. On Tuesday he bought 3 times as many apples as he did on Monday. How many apples did John buy on

Tuesday? A. 10 B. 3 C. 21 D. 28
Mathematics
2 answers:
d1i1m1o1n [39]2 years ago
8 0
He brought 21 apples.
madreJ [45]2 years ago
8 0

Answer:


Step-by-step explanation:

7 apples he bought on Monday x 3 = 21

(7 x 3 = 21)


Answer: 21 apples

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If I buy a stereo for $245 and this includes GST of 10%, what is the pre-GST price?
Ivan

Answer:  $222.73

===========================================

Work Shown:

x = pre-GST price

10% of x = 0.10x = tax amount

x + 0.10x = 1.10x = post-GST price = 245

1.10x = 245

x = 245/1.10

x = 222.7272 approximately

x = 222.73 is the price before tax.

------------

Check:

10% of 222.73 = 0.10*222.73 = 22.273 = 22.27

The tax amount ($22.27) is added to the pre-GST price to get

22.27+222.73 = 245

which matches the post-GST price mentioned.

The answer is confirmed.

Or another way to confirm the answer is to calculate this

1.10*222.73 = 245.003 = 245

6 0
2 years ago
Read 2 more answers
After 200 feet of drilling on the first well, a soil test is taken. The probabilities of finding the particular type of soil ide
dimaraw [331]

Answer:

The revised probabilities are;

The probability of finding soil with oil  = 0.8  

The probability of finding soil with good oil = 0.16

The probability of finding medium quality oil =  0.64

Step-by-step explanation:

The given probability of finding soil with high quality oil, P(QO) = 0.20

The probability of finding soil with medium-quality oil, P(OM) = 0.80

The probability of finding soil with no oil, P(ON) = 0.2

Therefore, given that the probability of finding soil with no oil = 0.2, we have;

The probability of finding soil with oil, P(OP) = 1 - the probability of finding soil with no oil

P(OP) = 1 - 0.2 = 0.8

Which gives;

The probability, P(FG) of finding soil with oil and that the oil is good is given as follows;

P(FG) = P(QO) × P(OP) = 0.2 × 0.8 = 0.16

The probability of finding good oil = 0.16

Similarly;

The probability of finding medium quality oil P(FM) =  P(OM) × P(OP) = 0.8 × 0.8 = 0.64

Which gives the revised probability as follows;

The probability of finding soil with oil, P(OP) = 0.8  

The probability of finding soil with good oil, P(FG) = 0.16

The probability of finding medium quality oil, P(FM) =  0.64.                

3 0
3 years ago
HELP PLEASE IM ALMOST DONE I WILL MARK BRAINLIEST
gulaghasi [49]

Answer:

y = 94

x = 86

Step-by-step explanation:

brainliest plz

7 0
3 years ago
Find the area of the shaded region.
andriy [413]
8x5 = 40
3x2 = 6

40 - 6 = 34

answer:
area of shaded = 34
3 0
3 years ago
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A property sells for $130,000. If a seller pays 6% commission and $800 in closing costs, what are the net proceeds?
Reptile [31]
6% 0f 130,000 =7800
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3 years ago
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