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Jlenok [28]
4 years ago
13

The sum of two numbers is 3. The difference between five times the first number and four times the second number is 6. Find the

numbers.
Mathematics
1 answer:
stellarik [79]4 years ago
4 0

Answer:

1 and 2

2+1=3

2×5=10

1×4=4

10-4=6

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How many real solutions does the equation 8x^2 − 10x + 15 = 0 have?
Nimfa-mama [501]

Answer:

The correct option is (A) No real solution.

Step-by-step explanation:

The expression provided is a quadratic equation.

8x^{2}-10x+15=0

The roots of a quadratic equation are:

x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{ 2a }

Here,

a = 8

b = -10

c = 15

The conditions to determine real and complex roots are:

  • If b^{2}-4ac then the quadratic equation has two complex roots.
  • If b^{2}-4ac>0 then the quadratic equation has two real roots.

Compute the value of b^{2}-4ac as follows:

b^{2}-4ac=(-10)^{2}-(4\times 8\times15)\\\\

             =100-480\\=-380\\

The equation has two complex roots.

Thus, the correct option is (A).

8 0
3 years ago
Is (5,6) a solution to this system of equations: 14x + 13y = -8<br> 19x + 14y = 11
rusak2 [61]

Answer:

Step-by-step explanation:

hello : 14x + 13y = -8

           19x + 14y = 11

test : put   x=5 and y=6

14(5)+13(6)≠ -8

conclusion : (5 , 6) is not solution

4 0
3 years ago
Please answer this question 4(x+y)+2(x+z)​
frez [133]

expand the brackets

4x+4y + 2x +2z

6x + 4y + 2z

4 0
4 years ago
Read 2 more answers
Determine the absolute value of -11.
AURORKA [14]
The absolute value is how far a number is from zero. The number will always be positive unless there is a negative symbol outside of the brackets. Therefore, your answer is 11.
5 0
4 years ago
Read 2 more answers
Solve for y<br> -3y - 2 &lt; 10<br> A) y&gt; - 4<br> ByS-4<br> C) y 4<br> D) $4
Pavlova-9 [17]

Answer:

a) y>-4

Step-by-step explanation:

Isolate the variable.

Hope this helps. Plz give brainliest.

7 0
3 years ago
Read 2 more answers
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