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amm1812
2 years ago
15

-3x =21 1/3x =6 -1/2x =-7

Mathematics
1 answer:
Kitty [74]2 years ago
3 0
-3x = 21
Divide -3 from both sides and you get x = -7

1/3x = 6
Divide 1/3 from both sides and you get x = 18

-1/2x = -7
Divide -1/2 from both sides and you get x = 14 (you get a positive answer from 2 negatives)

Dividing 1/3 is just multiplying by 3, and dividing -1/2 is just multiplying by -2
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A coca cola costs 150 yen. You buyed 30 bottles of cola and sold them at the price of 155 yen each. Find profit %​
bazaltina [42]
<h3><u>Question:</u><u>-</u></h3>

A coca cola costs 150 yen. You buyed 30 bottles of cola and sold them at the price of 155 yen each. Find profit %

<h3><u>Answer</u><u>:</u><u>-</u></h3>

3.33%

<h3><u>Explanation</u><u>:</u><u>-</u></h3>

Cost price = ¥150

Selling price = ¥155

Total profit = Selling price - Cost price

→ = ¥155 - ¥150

→ = ¥5

Profit % = Profit × 100/cost price

️ = 5 × 100/150

️ = 10/3 = 3.33%

7 0
2 years ago
Mackenzie put $6,000.00 in a retirement account that offers 11% interest compounded annually. She makes no additional deposits o
Veronika [31]

Answer:

$39,960

Step-by-step explanation:

11% of 6000

= 11/100 × 6000

=$660

Year 1=$6,660.00

Year 6= $6,660.00 × 6 years

=$39, 960.00

8 0
2 years ago
Tommy the Dunker's performance on the basketball court is influenced by his state of mind: If he scores, he is twice as likely t
rjkz [21]

Answer:

Step-by-step explanation:

Probability of of winning next shot if he scores= 0.5

Probability of missing next shot if he misses = 1/6

a) Probability of scoring 2 shots later if he missed = (1-1/6)^2

=(5/6)^2

=25/36

b) % of successful shots= (1/2+5/6×(1/100))%

=4/3×1/100

=0.013%

3 0
2 years ago
Did I get these all right
Leviafan [203]
Yep! They are all right! Great job, could write a bit better.... sorry
3 0
2 years ago
Can someone help me with this please thank you
o-na [289]
For 19 it is number 2 that does not have x = 20.
for 20 its the last one that the variable does not equal 12.
the answer for 21 is 6.
and the answer for 22 is 72.
8 0
2 years ago
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