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3 years ago

Two models of laptop computers are shipped in crates. One crate weighs 650

1 answer:

ioda3 years ago

5 0

Weight=smallertotalweight+largertotalweight

smallertotalweight=weight times how many
largertotalweight=weight times how many

lets call them s and l
smaller and larger

650=50s+75l
and
550=100s+25l
simplfiy the m all by dividing by 5

130=10s+15l
110=20s+5l
divide by 5 again

26=2s+3l
22=4s+l

we can eliminate the s's

multiply first equatn by -2 and add to first

22=4s+l
<u>-52=-4s-6l +</u>
-30=0s-5l

-30=-5l
divide both sides by -5
6=l

input back
22=4s+l
22=4s+6
minus 6
16=4s
divide 4
4=s

each smaller model weighs 4 pounds
larger weighs 6 pounds

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22-2n or 22-2(3)

Step-by-step explanation:

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4 years ago

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4 years ago

Multiply each equation by a constant that would help to eliminate the y terms.

Zinaida [17]

Answer:

Therefore the required resulting equation is

$6x-15y=-63\\-15x+15y=90$

6 x minus 15 y = negative 63.

Negative 15 x + 15 y = 90

Step-by-step explanation:

Given:

$2x-5y=-21$ ......................Equation ( 1 )

$3x-3y=-18$ ......................Equation ( 2 )

To Find:

Expression after multiplying to eliminate y term,

Solution:

So to eliminate 'y' term we need to multiply equation 1 by a constant 3 and equation 2 by a constant -5, such that equations becomes

$3(2x-5y)=3\times -21\\\\6x-15y=-63$ .....( 1 )

$-5(3x-3y)=-5\times -18\\\\-15x+15y=90$ .....( 2 )

so now by adding new equation one and two we can eliminate y term that means -15y and +15y will get cancel,

Therefore the required resulting equation is

$6x-15y=-63\\-15x+15y=90$

6 x minus 15 y = negative 63.

Negative 15 x + 15 y = 90

3 0

3 years ago

Read 2 more answers

I really need help on this i dont know how to do it.

Juli2301 [7.4K]

Answer:

Step-by-step explanation:

25x = 300

Rearrange to solve

x = 300 divided by 25 = 12

Hope this helps

5 0

3 years ago

A father of 12 at death orders his lawyer to share his properties amongest his 12 sons. if the man is worth 12.3 million, and ea

GuDViN [60]

Answer:

Step-by-step explanation:

The man has twelve sons. So we need an equation that has twelve numbers added to 12.3 million. The youngest son's share is what we want to find, so set it to x. Each son older will have 175 more than the one younger than him.

So the next to youngest will have x+175(1) and the next will have x+175(2) and so on to the twelfth one.

So....

x + x+175 + x+175(2) + x+175(3) + x+175(4) + x+175(5) + x+175(6) + x+175(7) + x+175(8) + x+175(9) + x+175(10) + x+175(11) = 12,300,000

Now simplify. Add all the x's and multiply all the numbers.

12x + 350+525+700+875+1050+1225+1400+1575+1750+1925+2100=12,300,000

Continue to simplify by adding.

12x+13,475=12,300,000 Now simplify by subtracting the non 'x' number from both sides

12x+13,475-13,475=12,300,000-13,475

12x=12,286,525 Now simplify by dividing both sides by 12.

x = 1,023,877.08

The youngest son will inherit 1,023,877.08.

There should be a unit:$, pounds, something.

8 0

3 years ago