The bookstore is on sale and they offer the following prices to the following items: => books is equals to 3 dollars => magazines costs 2.50 dollars.Now, Jam were able to spend 16 dollars in total in buying 6 books and x number of magazines. => Let's find out how many did Jam bought. => he bought a total of 6 books and magazine.=> Let's analyze how many magazines and how many books will he need to buy in order to get 16 dollars in total=> 4 magazines * 2.5 dollars = 10 dollars=> 2 books * 3 dollars = 6 dollarsin total 16 dollars.<span>
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Step-by-step explanation:
answer is attached as image
For #2:
<span> 3x^2 + 4 – 2x^2 + 6</span>
<span><span>You need to combine your like terms:
</span>
3x^2 – 2x^2= x^2</span>
4 + 6 = 10
This will now give you:
<span>X^2 +10</span>
21.
So to solve for the value of a variable in an equation, you would need to isolate x on one side. The first thing you have to do is multiply 2 and (x + 7) together, which can be rewritten as 2(x) + 2(7). After multiplying, your equation would be: 
, or A.
22.
So the rule with multiplying exponents with the same base is to add the exponents together, and the rule with dividing exponents with the same base is to subtract the exponents. Your equation will be simplified as such:
Now the rule with converting negative exponents into fractions is 
. In this case, 4^-2 would turn into 
, or C, which is your final answer.
Answer:
145
Step-by-step explanation:
m<4 and m<3 would equal 90 so subtract 55 from 90 and you get 35 for m<3 so you subtract 35 from 180 and you get 145
