Answer:
$13.50
Step-by-step explanation:
Subtract 40 from 26.50 to get the answer
Answer:
x = - 4 , x = - 3
Step-by-step explanation:
- 7x = x^2 + 12
Take all terms to one side of equation.
x^2 + 7x + 12 = 0
Find which 2 numbers multiply to give 12 and add to give 7.
a × b = 12
a + b = 7
a = 4
b = 3
Split the middle term using these 2 numbers.
x^2 + 4x + 3x + 12 = 0
Factorise each pair of terms separately.
x ( x + 4 ) + 3 ( x + 4 ) = 0
Bring out common factor of ( x + 4 ) and factorise.
( x + 4 ) ( x + 3 ) = 0
Using the Null factor law, make the expressions in each pair of parentheses equal 0.
x + 4 = 0
x = - 4
AND
x + 3 = 0
x = - 3
THEREFORE:
x = - 4 , x = - 3
The square root of 78 is an irrational number, so the exact number
can't be written down, no matter how long you make the decimal.
If I say it's 8.8318, then my answer is too big, but only by about 0.0004 percent.
Answer:
x1= 1/2
x2=0,6
Step-by-step explanation:
<span>5x-4+6<16
Subtract 6 from both sides
5x-4<10
Add 4 to both sides
5x<14
Divide 5 on both sides so that the only thing remaining on the left side is the variable x.
Final Answer: 14/5 or 2 4/5 or 2.8 *All answers are equivalent to each other.</span>
