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elena55 [62]
3 years ago
14

If |4x - y =1

Mathematics
1 answer:
Allushta [10]3 years ago
8 0

Answer:

  • x = 2
  • y = 7
  • x - y = -5

Step-by-step explanation:

We have been two algebraic expressions which is given below:

  • 4x - y = 1
  • 3x + 2y = 20

We have to find the value of x - y. so we need to find the value of x and y.

4x - y = 1 * 3

3x + 2y = 20 * 4

  • 12x - 3y = 3
  • 12x + 8y = 80

--------------------

-11y = - 77

y = 77/11

y = 7

  • <u>Substitute the value of y in equation 1.</u>

4x - y = 1

4x - 7 = 1

4x = 1 + 7

4x = 8

x = 8/4

x = 2

  • x - y
  • 2 - 7 = -5
  • Therefore, the required value of x, y , and x - y are 2,7 and -5 respectively.
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!!!! I'LL GIVE BRAINLIEST !!!! PLS HELP THIS IS A TEST
kirza4 [7]

Answer:

yes,this is congruent by SAS criteria

8 0
3 years ago
Can someone solve this
marysya [2.9K]

From the Arithmetic Information given, Pr = 0.049375 ≠ -8.050625 ≠ 0.0325  See explanation below.

<h3>

What are the step by steps solution to the questions above?</h3>

First, lets us restate the question properly. We have

Pr = 1 - ((6*12+6)/80)² = 1 - ((9*12²)/1600) - ((3*12*6)/1600) - (6²/6400) = 1 - 0.005625 * 12² - 0.001875 * 12 * 6 - 0.00015625 * 6²

Note that there are three equals signs. So lets divide the problem according and solve for the different parts.

Lets   1 - ((6*12+6)/80)²  ............A

1 - ((9*12²)/1600) - ((3*12*6)/1600) - (6²/6400) .............B; and

1 - 0.005625 * 12² - 0.001875 * 12 * 6 - 0.00015625 * 6² ........C

Solving for A we have

1 - (78/80)²

= 1 - (0.975)²

= 1 - 0.950625

A = 0.049375


Solving for B we have

1 - ((9*12²)/1600) - ((3*12*6)/1600) - (6²/6400)

= 1- (14,256/1600) - (216/1600) - (36/6400)
= 1 - 8.91 - 0.135 - 0.005625

B = -8.050625

Solving for C we have

1 - 0.005625 * 12² - 0.001875 * 12 * 6 - 0.00015625 * 6²

= 1 - 0.005625 * 144 - 0.001875 * 12 * 6 - 0.00015625 * 144

= 0.0325


In summary we can state that:

A = 0.049375

B =  -8.050625

C = 0.0325

Given that there were no abstract quantities, we can state that

Pr = A ≠ B ≠C or

Pr = 0.049375 ≠ -8.050625 ≠ 0.0325

Learn more about equations with equal signs at

brainly.com/question/18924248
#SPJ1

4 0
2 years ago
Anyone wanna help me?
spayn [35]
Similarities: same atomic number
Differences: they have a different number of neutrons
8 0
3 years ago
Read 2 more answers
Item 56
masha68 [24]

Answer:

a 25 questions, 4 points   b 19 questions

Step-by-step explanation:

a 96:100 = 24 : x

x = (100 x 24)/96 = 25 questions

100 : 25 = 4 points

b 76:100 = x : 25

x = (76 x 25)/100 = 19 questions

6 0
3 years ago
Read 2 more answers
How do you read this expression 8(8x+7) and 8(3x)+8(7)
Misha Larkins [42]

Answer:

64x+56 & 24x+56

Step-by-step explanation:

I hope this is what you mean because this is not an equation as it is not set equal to anything.


Both problems solved by distributive property -

8*8x + (8*7) = 64x+56

8*3x + (8*7) = 24x+56

4 0
3 years ago
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