Answer:
40n
Step-by-step explanation:
(40+n): The first one is asking to add forty and n, however the question is asking for multiplication so that is not an answer.
(n-40): This one is using subtraction, so this one is an obvious no.
(40/n): This phrase represents division, this could be a possibility because it is the inverse operation, however the numbers need to be reversed.
(40n): Im thinking that you got confused because there was no operation symbol. Whenever a number and a variable are attached without an operation symbol in between, you multiply. So, this is the correct answer.
4)
Area=(base x height) / 2
area=24 in²
therefore:
(b*3b)/2=24 in²
3b²/2=24 in²
b²=(24*2)/3 in²
b²=16 in²
b=√(16 in²)= 4 in
answer: 4 in
5)
if x=9
x²+z=103
(9)²+z=103
81+z=103
z=103-81=22
if x=-9
(-9)²+z=103
81+z=103
z=103-81=22
Answer: 23
1)
n²-49=0
n²=49
n=⁺₋√49=⁺₋7
Answer: ⁺₋7
2)
x²+64=0
x²=-64
x²=⁺₋√-64 These numbers are not real.
Answer:no solution
3)
area=slide²
slide=+√area
slide=+√(144x²)=12x
answer: 12 x
Answer:
71 cents
Step-by-step explanation:
Since it talks about long and wide and there is no a triangluar bedroom we use rectangle
Change first to improper
1 1/8=9/8
9 3/4=39/4
Now Perimeter of it is
2(l+w)=P
2(9/8+39/4)=P
9/4+39/2=P
Their LCM is 4
9/4+78/4=P
87/4=P
Answer:
Answer down below!
Step-by-step explanation:
−12x+14=−10x−8
Step 1: Add 10x to both sides.
−12x+14+10x=−10x−8+10x
−2x+14=−8
Step 2: Subtract 14 from both sides.
−2x+14−14=−8−14
−2x=−22
Step 3: Divide both sides by -2.
−2x
−2
=
−22
−2
x=11