Answer: D. 78cm2
Step-by-step explanation:
SA=B+1/2ph
SA=28+1/2(20)(5)
SA=78cm2
Rearrange slightly like so...
x^3-3x-5x^2+15 now factor first and second pair of terms...
x(x^2-3)-5(x^2-3)
(x-5)(x^2-3)
(x-5)(x-√3)(x+√3)
Answer:
3 1/4
Step-by-step explanation:
39/4x1/3= 39/12= 3.25 or 3 1/4
44 = 11
---- ----
p 5
Cross multiply
44*5 = 11p
You end up with ;
220 = 11p
Divide 220 by 11 to get p by itself
20 = p <-- that's your answer
hope i helped :)
Answer:
x = 3
Step-by-step explanation:
<u>Step 1: Plug in 12 for y</u>
<em>2x - 18 = -2(12) + 12</em>
<em />
<u>Step 2: Multiply</u>
<em>2x - 18 = -24 + 12</em>
<em />
<u>Step 3: Combine</u>
<em>2x - 18 = -12</em>
<em />
<u>Step 4: Add 18 to both sides</u>
2x - 18 + 18 = -12 + 18
<em>2x = 6</em>
<em />
<u>Step 5: Divide both sides by 2</u>
2x / 2 = 6 / 2
<em>x = 3</em>
<em />
Answer: x = 3
