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Rama09 [41]
2 years ago
15

How to solve 42=3(2-3h)

Mathematics
1 answer:
faust18 [17]2 years ago
5 0

Answer:

h= -4.

Step-by-step explanation:

42= 6-9h

42-6=-9h

36=-9h

36/-9= -9h

-4=h

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(x+5)(y+10) <br><br> what is the answer to this equation?
netineya [11]
(x + 5)(y + 10)
x(y + 10) + 5(y + 10)
x(y) + x(10) + 5(y) + 5(10)
xy + 10x + 5y + 50
7 0
2 years ago
The square of a number is 12 less than 7 times the number. What is the number?
hjlf

<u><em>Answer:</em></u>

The number is either 3 or 4


<u><em>Explanation:</em></u>

Assume that the number we are looking for is x

The square of the number would be x²

7 times the number would be 7x


<u>We are given that:</u>

square of the number (x²) is 12 less than 7 times the number (7x)


<u>Translating this into an equation, we would have:</u>

x² = 7x - 12


<u>Rearranging the quadratic equation:</u>

x² - 7x + 12 = 0


<u>Now, we factor the equation:</u>

(x-4)(x-3) = 0


<u>This means that:</u>

either x-4 = 0 ..................> x = 4

or x-3 = 0 ........................> x = 3


<u>Let's check if any of the solutions is an extrovert:</u>

For x = 3 .............> (3)² = 7(3) - 12 .........> 9 = 21 - 12 .......> 9 = 9 .......> not extrovert

For x = 4 .............> (4)² = 7(4) - 12 .........> 16 = 28 - 12 .....> 16 = 16 ....> not extrovert


Since we have no restrictions on the number, therefore, both solutions would be accepted


Hope this helps :)


7 0
3 years ago
A paint store mixed 4 3/4 cans of paint and 7 2/3 cans of white paint did this mixture make?
stira [4]

Answer:

12 5/12 cans of white make

Step-by-step explanation:

6 0
3 years ago
4 friends share 3 apples equally. What fraction of the apple does each friend get ?
nordsb [41]
3 apples are to be divided up amongst 4 friends. 3/4 = 0.75 apples per person.
6 0
3 years ago
Read 2 more answers
2x+3y=1, -x+2y=-4 solve using substitution method
ollegr [7]

Step-by-step explanation:

1) 2x+3y-3y=1-3y. -x+2y= -4

2x/2=1-3y/2. -(1-3y/2)=-4

x=1-3y/2. -1+3y/2= -4

x=1-3(-2)/2 3y/2= -4+1

x=1+6/2 3y/2×2/3= -3×2/3

x=7/2 y= -2

S.s{ 7/3,-2}

2). -4x-6y+6y=7-6y. 4x+y= -2

-4x/-4=7-6y/-4. 4(-7-6y/4)+y= -2

x= -7-6y/4. -7-6y+y = -2

x= -7-6/4 -5y/5= 5/5

x=-13/4 y= 1

S.s { -13/4, 1 }

8 0
2 years ago
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