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zloy xaker [14]
3 years ago
15

Solve the simultaneous equations 5y−4x=8 y+x=7 x= ? y= ?

Mathematics
2 answers:
ddd [48]3 years ago
7 0
Y=4
X=3
5(4)-4(3)=8
4+3=7
inna [77]3 years ago
4 0

Answer:

x=3 y=4

Step-by-step explanation:

5(4)=20

4(3)= 12

20-12=8

4+3=7

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Find the value of p for which x = -2, y = -1 is a solution of linear equation 5x + 2py = 2p.​
Rom4ik [11]
I think p=4
How I solved it:
5(-2)+2p+2(-1)=2p
-10+2p+-2=2p So cross out last
-2p -2p 2p:)
= -10+2p+-2
+10 +10 Cross out the 10
= 2p=8
= divide both sides by 2p
= 2p/2= 8/2
= cross out the 2.
= which leaves
= p=4 we get 4 because we divide 8 to 2:)


I don’t know if I’m right but yea...



8 0
3 years ago
Can somebody tell me the answer and maybe tell me how you got it too.​
asambeis [7]

To get t on one side, we have to use inverse operations to get rid of the 5.

1. Use inverse operation of multiplication to get rid of 5. Which would be division.

2. Divide both sides by 5.

5t/5 = 7 1/2 / 5

3. Solve.

5t/5 = t and 7 1/2 /5 = 1 1/2

7.5 / 5 = 1.5

Therefore, your answer would be C. divide both sides by 5, and the answer is 1 1/2.

7 0
3 years ago
Which subset of the real numbers contains the square root of 50
DENIUS [597]
The first thing you should do in this case is to know that you can rewrite the expression.
 We have then:
 root (50)
 Rewriting:
 root (2 * 25)
 5 * root (2)
 Which belongs to the set of irrational numbers.
 Answer: 
 Irrational numbers.
3 0
3 years ago
The units digit of a two digit number is 1 less than 3 times the tens digit. if the digits are reversed, the new number is 45 mo
alex41 [277]
The units digit of a two digit number is 1 less than 3 times the tens digit. if the digits are reversed, the new number is 45 more than the original number. find the number

5 0
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How to write .326 two other forms
kotykmax [81]
0.3 + 0.02 + 0.006

(3 \times 10^{-1}) + (2\times 10^{-2}) + (6\times10^{-3})
3 0
3 years ago
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