Answer:
Answers in Explanation
Step-by-step explanation:
First Question:
+ [18 ÷ 3 x 4 - 15] - (60 - 7^2 - 1)
+ [24 - 15] - (60 - 49 - 1)
+ 9 - 10
10 + 9 - 10
<u>Answer = 9</u>
Second Question:
5x + 2x = 7x
5x^2 + 3x^2 = 8x^2
2x + 3x - x = 4x
2x + 3y + x + y = 3x + 4y
9x - 6x = 3x
-7y + 3x + 4x + 3y = 7x - 4y
-7x^2 + 2x^2 + 9x^2 = 8x^2
(3x^2 + 5x + 4) - (-1 + x^2) = 2x^2 + 5x + 5
(3 + 2x - x^2) + (x^2 + 8x + 5) = 10x + 8
(3x - 4) - (5x + 2) = -2x - 6
(2x^2 + 5x + 3) - (x^2 - 2x + 3) = x^2 + 7x
(3x^2 + 2x - 5) - (2x^2 - x - 4) = x^2 + 3x - 1
Third Question:
17x + 2y
(5x + 12y) + (3x + y) = 8x + 13y
17x - 8x = 9x
2y - 13y = -11y
Answer: 9x - 11y
24.5= <span><span>−<span>2.5c</span></span>−<span>4<span>c
</span></span></span><span>24.5=<span><span><span>−<span>2.5c </span></span>+ </span>−<span>4c</span></span></span><span>24.5 = <span>(<span><span>−<span>2.5c</span></span>+<span>−<span>4c</span></span></span>) </span></span><span>24.5=<span>−<span>6.5c </span></span></span><span>24.5=<span>−<span>6.5<span>c
</span></span></span></span><span>−<span>6.5c</span></span>=<span>24.5
</span><span><span><span>−<span>6.5c </span></span><span>− 6.5 </span></span>=<span>24.5 <span>− 6.5 </span></span></span><span>c=<span>−<span>3.769231
These are all the steps that you do to solve this equation. I worked it out fully and the answer is above these words.</span></span></span>
(2,4) is the answer so it is
A
For clearly look we can seperate the number parts and the letter parts because they are all “*” and “/“ caculation
Initial fraction: (20 * a^2 * b) / ( 5 * a * b^2) = (20 / 5) * (a^2 / a) * (b / b^2)
Result: (4*a) / (b) = (4*a) / (1*b) = (4/1) * (a/b)
As you can see the result is a fully simplifying form so just simplify any thing you can from initial fraction
20/5 = 4/1 (both nume and deno are divided by 5)
a^2 / a = a/1 (divided by a)
b / b^2 = 1/b (divided by b)
Multiply all above we get the result 4a/b (just for checking whether we did right or not)
Next, multiply all that we have divided in previous step: 5*a*b = 5ab
=> problem solved
Answer:
3.5
Step-by-step explanation:
This is because 12 times 4 is 48 and if you divide 168 by 48 you get 3.5 . 3.5 times 12 times 4 is 168.
