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kozerog [31]
3 years ago
9

How can you check to see if you have correctly factored an expression?

Mathematics
1 answer:
AleksandrR [38]3 years ago
6 0
Expand the factored expression (multiply all the terms back together), and see if it matches up with the original expression.
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PLZZZZZZZZ HELP ME Find the interest earned at 12% on $1000 for 6 months. A.60 B.70 C.80 D.90
tatuchka [14]

Answer:

A

Step-by-step explanation:

$1000 x .12 =120/2=60

7 0
3 years ago
The units pf the digits of a two digits numeral is 8 if the digits are reversed the new number is 18 greater than the oringal nu
ra1l [238]

complete question:

The sum of the digits of a two-digit numeral is 8. If the digits are reversed, the new number is 18 greater than the original number. How do you find the original numeral?

Answer:

The original number is 10a + b  = 10 × 3 + 5  = 35

Step-by-step explanation:

Let

the number = ab

a occupies the tens place while b occupies the unit place. Therefore,

10a + b

The sum of the digits of two-digits numeral

a + b = 8..........(i)

If the digits are reversed. The reverse digit will be 10b + a. The new number is 18 greater than the original number.

Therefore,

10b + a = 18 + 10a + b

10b - b + a - 10a = 18

9b - 9a = 18

divide both sides by 9

b - a = 2...............(ii)

a + b = 8..........(i)

b - a = 2...............(ii)

b = 2 + a from equation (ii)

Insert the value of b in equation (i)

a + (2 + a) = 8

2a + 2 = 8

2a = 6

a = 6/2

a = 3

Insert the value of a in equation(ii)

b - 3 = 2

b = 2 + 3

b = 5

The original number is 10a + b  = 10 × 3 + 5  = 35

6 0
3 years ago
3x+2y=8 how to solve
GarryVolchara [31]
8-3x
Divide the whole thing by 2 so it would be y=4-1.5x
6 0
3 years ago
What are the solutions of the quadratic equation 4x^2-8x-12=0
Wewaii [24]

Answer:

<h3>          x₁ = -1,   x₂ = 3</h3>

Step-by-step explanation:

4x^2-8x-12=0\\{}\qquad\qquad^{\div4\qquad\div4}\\x^2-2x-3=0\\\\x^2+x-3x-3=0\\\\x(x+1)-3(x+1)=0\\\\(x+1)(x-3)=0\\\\x+1=0\quad\vee\quad x-3=0\\\\x=-1\quad\vee\quad x=3

6 0
3 years ago
Explain the term least significant bit (LSB).
vivado [14]

Answer:

the bit in a binary number which is the lowest numerical value

6 0
3 years ago
Read 2 more answers
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