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disa [49]
3 years ago
11

An unknown number y is 20 more than an unknown number x. The number y is also x less than 2. The equations to find x and y are s

hown below:
y = x + 20
y = –x + 2

Which is a correct step to find x and y?


Multiply the equations to eliminate y.

Add the equations to eliminate x.

Write the points where the graphs of the equations intersect the x-axis.

Write the points where the graphs of the equations intersect the y-axis.
Mathematics
2 answers:
NARA [144]3 years ago
8 0

Answer: Add the equations to find the sum of x

Thank you and please click the heart button

Scorpion4ik [409]3 years ago
4 0
Add the equations to eliminate x.
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Write the first 4 multiples of 3/8
sesenic [268]

Multiples of 3

: 3, 6, 9, 12, 15, 18, 21, 24, ...

Multiples of 4

: 4, 8, 12, 16, 20, 24, ...

Multiples of 8

: 8, 16, 24, ..

2

Find the smallest number that is shared by all rows above. This is the LCM.

LCM = 2424

Method 2: By Prime Factors

1

List the prime factors of each number.

Prime Factors of 3

: 3

Prime Factors of 4

: 2, 2

Prime Factors of 8

: 2, 2, 2

2

Find the union of these primes.

2,2,2,32,2,2,3

3

Multiply these numbers: 2\times 2\times 2\times 3=242×2×2×3=24. This is the LCM.

LCM = 2424

3 0
2 years ago
I need the least common denominator for this! I have been stuck on this assignment for a few days lol
zheka24 [161]

Answer:

100

Step-by-step explanation:

100 is the lowest number 50 and 20 both go into.

4 0
2 years ago
Read 2 more answers
3. Which expressions are equivalent to the given one?
Montano1993 [528]

Answer:

b, d

Step-by-step explanation:

20/-4 = -5

20 x (-1/4) = -5

4 0
1 year ago
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