Answer:
21-7x
Step-by-step explanation: gather like terms
25-4=21 -9x+2x=-7x
Answer:
490 + 175
Step-by-step explanation:
35(14+5)
35x14x=490x
35x5=175
490 + 175 = 665x
Answer:
(a) -7, (b) 2
Step-by-step explanation:
a) When x = 0,
=> x² - 8x - 7
=> (0)² - 8(0) - 7
=> 0 - 0 - 7
=> - 7
b) When x = -1,
=> x² - 8x - 7
=> (-1)² - 8(-1) - 7
=> 1 + 8 - 7
=> 9 - 7
=> 2
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em>
Answer: 1
Step-by-step explanation:
In reality , the child will not born, if mother die before his conception and keeping in mind that the pregnancy takes about 9 months after conception.
Now according to the statement "Your mother could not have died two years before you were born." is always true and therefore the probability equals 1 .
So the rule with dividing exponents of the same base is to just subtract the exponents. Using this rule, we solve the equation as such:
Next, assuming that you only want positive exponents, to get from a negative exponent to a positive one the rule is 
. Using this rule, your final answer is going to be 
