Answer:
x = 6 y = -9
Step-by-step explanation:
8x +2y = 30
-7x + 2y =24
x= 6
8(6)
48 + 2y =30
-48. -48
2y = -18
÷2. ÷2
y = -9
Write the decimal number as a fraction ( over 1 ) 1.49=1.49/1
Multiplying by 1 to eliminate 2 decimal places we multiply top and bottom by 2 10s
Numerator ( N)
N= 1.49*10*10=149
Denominator(D)
D+ 1*10*10=100
N / D =149/100
Simplifying the fraction:
149/100
149/100
1 49/100 ( Final Answer )
Answer:
<u>Answer</u><u>:</u><u> </u><u>4</u><u>x</u><u>²</u><u> </u><u>-</u><u> </u><u>9</u><u>x</u><u> </u><u>+</u><u> </u><u>2</u><u>0</u><u> </u>
Step-by-step explanation:
• General quadratic equation:
• sum of roots → 4 + 5 = 9
• product of roots → 4 × 5 = 20
• substitute:
It is a negative 2 so the answer is (7,-2)
Step 1.)
7x + 7 * 4.
We need to expand this term by multiplying a term and an expression.
The following product distributive property will be used:
A(B+C) = AB + AC
Numerical factors in this term have been multiplied.
In our example, the resulting expression will consist of 2 terms:
the first term is a product of 7 and x
the second term is a product of 7 and 4.
7x + (7 * 4)
Numerical factors in this term have been multiplied.
Which equals:
7x + 28
Hope you understand this and it helps. Have a great evening!
