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3 years ago

15

When 64 is added to the number that is produced by doubling the number x, the result is equal to 35 times the number that 1 less

than x. What is the value of x?

1 answer:

photoshop1234 [79]3 years ago

6 0

64+(2x)=35(x-1)
expand
64+2x=35x-35
minus 2x from both sides
64=33x-35
add 35 to both sides
99=33x
divide both sides by 33
3=x
the number is 3

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faltersainse [42]

The price of one vegetarian special lunch is $7 and price of one chicken special lunch is $8.

Step-by-step explanation:

Let,

Price of one vegetarian special lunch = x

Price of one chicken special lunch = y

According to given statement;

21x+40y=467 Eqn 1

28x+36y=484 Eqn 2

Multiplying Eqn 1 by 28

$28(21x+40y=467)\\588x+1120y=13076\ \ \ Eqn\ 3$

Multiplying Eqn 2 by 21

$21(28x+36y=484)\\588x+756y=10164\ \ \ Eqn\ 4$

Subtracting Eqn 4 from Eqn 3

$(588x+1120y)-(588x+756y)=13076-10164\\588x+1120y-588x-756y=2912\\364y=2912$

Dividing both sides by 364

$\frac{364y}{364}=\frac{2912}{364}\\y=8$

Putting y=8 in Eqn 1

$21x+40(8)=467\\21x+320=467\\21x=467-320\\21x=147$

Dividing both sides by 21

$\frac{21x}{21}=\frac{147}{21}\\x=7$

The price of one vegetarian special lunch is $7 and price of one chicken special lunch is $8.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

3 years ago

7EE2 7. In August, Cory begins school shopping for his triplet daughters. One day, he bought 3 packages of socks for $8 each and

NeTakaya

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Step-by-step explanation:

I am not sure which two answer choices you have provided for you but these two expressions work for this problem

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Step-by-step explanation:

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Step-by-step explanation:

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Trava [24]

so this is like cancelling out. so if you have positive 13 and have an answer of 3 how much do you need to subtract/ cancel out to get there? 10

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