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natka813 [3]
3 years ago
10

Can someone help me please?

Mathematics
1 answer:
Assoli18 [71]3 years ago
8 0

Answer:


Step-by-step explanation:


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Please help me solve this..​
Nataliya [291]

Answer:

5

Step-by-step explanation:

Let a = number of pieces of chocolate bought by Amin.

Let b = number of pieces of chocolate bought by Bob.

b = 2a

(a - 3)(b - 3) = 14

ab - 3a - 3b + 9 = 14

a(2a) - 3a - 3(2a) = 5

2a^2 - 3a - 6a = 5

2a^2 - 9a - 5 = 0

(2a + 1)(a - 5) = 0

2a + 1 = 0  or  a - 5 = 0

a = -1/2  or  a = 5

Amin cannot have bought -1/2 pieces of chocolate, so we discard the soluion a = -1/2.

a = 5

Answer: 5

3 0
3 years ago
Read 2 more answers
What is 4.5b + 9 = 90
Andreas93 [3]
Easy


just remember

you can do ANYTHING to an equaiton as long as you do it to both sides


try to get place holder by itself


4.5b+9=90
minus 90 from both sides
4.5b+9-9=90-9
4.5b+0=81
4.5b=81
either divide both sides by 4.5 or double 4.5 to get rid of the decimal
I will double
double both sides
9b=162
divid both sides by 9
b=18


 
4 0
3 years ago
Read 2 more answers
Write the following quotient scientific notation 33x10 to the ninth power by 11x10 to the seventh power
zepelin [54]

Answer:

try 56

-

10

Step-by-step explanation:

i feel that is the right awnser

6 0
2 years ago
What two numbers multiply to make 12 but<br> add to make -7?
vichka [17]

Answer:

negative three and negative 4 :)

Step-by-step explanation:

7 0
3 years ago
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What is the slope of the line on the graph?
Lelechka [254]

Answer:

5,-1,-7

Step-by-step explanation:

7 0
3 years ago
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