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3 years ago

How do I do linear equations using the elimination method

1 answer:

8 0

In order to use the elimination method, you have to create variables that have the same coefficient—then you can eliminate them. Multiply the top equation by 5. Next add the equations, and solve for y. Substitute y = 10 into one of the original equations to find x.

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Please help me with this question :)

egoroff_w [7]

Answer:

Plot $3$ and $-3$

Step-by-step explanation:

Given:

$|2n| = 6$

Solving for the positive part of the equation:

$2n = 6 \\ \frac{2n}{2} = \frac{6}{2} \\ n = 3$

Solving for the negative part of the equation:

$-2n = 6 \\ \frac{-2n}{-2n} = \frac{6}{-2} \\ n = -3$

3 0

2 years ago

Find the two pairs of integers whose sum is -6

MaRussiya [10]

Answer:

1, -7

Step-by-step explanation:

any whole number(s) that result in -6 will be your answer.

x+y= -6

5 0

2 years ago

a box is a cuboid with dimensions 28cm by 15 cm by 20 cm all measured to the nearest centimetre. Disc cases are cuboids which me

nataly862011 [7]

Answer:

See Below

Step-by-step explanation:

To get volume of cuboid, we multiply the 3 dimensions.

Volume of Box = 28 * 15 * 20 = 8400

Volume of 1 disc case = 1.5 * 14.2 * 19 = 404.7

Volume of 17 disc cases = 17 * 404.7 = 6879.9

Since, volume of 17 disc cases is less than volume of the cuboid box, definitely 17 disc cases will fit the box.

7 0

3 years ago

Read 2 more answers

You are wrapping a gift box. You want to tie a ribbon around the box , so that whenever the ribbon intersects an edge of the box

Paha777 [63]

You are wrapping a gift box. The length of ribbon = length + width + height of box.

Solution:

Given, You are wrapping a gift box.

You want to tie a ribbon around the box, so that whenever the ribbon intersects an edge of the box, its distance to the nearest corner is 1/3 the length of the box.

We have to find how long must the ribbon be?

The figure of this problem is attached below

Now, assume we started to tie at one edge, then next we can tie at straight parallel edge, we can continue till our process ends.

Then, total length of the ribbon = length of box + width of box + height of box.

Hence, the length of ribbon = length + width + height of box.

7 0

3 years ago

Jack had to frame 12 glasses in 2 days. How many days will he take to frame 30 glasses?

Slav-nsk [51]

5 days he will take to frame 30 glasses

8 0

2 years ago

Read 2 more answers