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3 years ago

7

Solve the simultaneous equations 3x – y = 12 x +y = – 4 D = y = N

2 answers:

Iteru [2.4K]3 years ago

6 0

Answer:

x is 2 and y is -6

Step-by-step explanation:

3x-y=12

x+y=-4

Adding both equations to eliminate y

4x=8

x=2

Substituting

2+y=-4

y=-6

x is 2 and y is -6

Proving that this answer is correct:

Substituting x is 2 and y is -6

3*2-(-6)=12 6+6=12 12=12 True

2-6=-4 -4=-4 True

Therefore, x is 2 and y is -6

user100 [1]3 years ago

3 0

Answer:

x+y=-4=y=-x-4

3x-(-x-4)=12

4x-4=12

4x=16

x=4

4+y=-4

y=-4

solution

(4,-4)

690th QUESTION LETS GOOO!!!

Hope This Helps!!!

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Okay, help me out here!!

luda_lava [24]

Answer:

65.8

Step-by-step explanation:

(2.6*4.7)/2=6.11

11*4.7=51.7

(4.7(17-(2.6+11)))/2=7.99

6.11+51.7+7.99=65.8

3 0

4 years ago

Multiply: 4(−5 2/3) Enter your answer as a fraction in simplest form, like this: 42/53

8_murik_8 [283]

Answer:

The amount that came is $\frac{-68}{3}$

Step-by-step explanation:

The computation is shown below:

According to the question, it is mentioned that

Multiply 4 by $-5\frac{2}{3}$

First open the equation in a fraction it would be $\frac{-17}{3}$

Now multiplied the above fraction by a 4

That gives the result of $\frac{-68}{3}$

Hence, the amount that came is $\frac{-68}{3}$

We simply multiply the 4 with the given fraction

Thus the above represents the simplest form of the fraction

5 0

3 years ago

Find the 37th term of 352,345,338

Mariulka [41]

Answer:

$a_{37}=100$

Step-by-step explanation:

Given that,

A sequence 352,345,338.

First term = 352

Common difference = 345-352 = -7

We need to find the 37th term of the sequence.

The nth term of an AP is given by :

$a_n=a+(n-1)d\\\\a_{37}=352+36\times (-7)\\\\a_{37}=100$

So, the 37th term of the sequence is 100.

8 0

3 years ago

a washer and a dryer cost $970 combined . the washer costs $70 more than the dryer . what is the cost of the dryer ?

Reika [66]

Answer:

415

Step-by-step explanation:

970 divided by 2 = 485, 485 + 70 = 555

970 - 555 = 415, so your answer is 415

3 0

3 years ago

Read 2 more answers

Use your knowledge about parentheses and substitution to solve the following:

meriva

Answer:

16. r(s)(t) =

r=2, s=3, t=4

(2)(3)(4)=

(2*3) = 6 ---> 6(4) = 24

final: 24

17. (r)(s)(t)(x)(y) =

r = 2, s = 3, t = 4, x = 5, y = 6

(2)(3)(4)(5)(6)

2*3=6

6*4=24

24*5= 120

120*6=720

final: 720

18. (7x + 2Y) =

x = 5, y = 6

rewrite---> = [7(5) + 2(6)]

[35 + 12] = 47

final: 47

hope this helpsss sorry took a while LOL

Step-by-step explanation:

q = 1; r = 2; s = 3; t = 4; x = 5; y = 6

5 0

2 years ago

Read 2 more answers