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cestrela7 [59]
3 years ago
14

Ali studies for 3 hours 45 minutes. He started studying at 4:30 pm. At what time did he finish?

Mathematics
1 answer:
lana66690 [7]3 years ago
8 0
I believe he would have finished at 8:15 pm
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Find the profit or loss of the following:<br>CP=Rs 300, SP= Rs 832​
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Answer:

Profit of 532

Step-by-step explanation:

Since the SP is more than the CP then there is a profit

profit = SP - CP = 832 - 300 = 532

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What does it mean if I say addition and multiplication are associative
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Question 3 Determine the leg lengths between the two points: (6, -3) and (-2,4).
Shalnov [3]

Answer:

9

Step-by-step explanation:

→You can use the Pythagorean Theorem to solve this, by plugging in the numbers, like so:

\begin{gathered}a^2+b^2=c^2\\x^2+(x-3)^2=(x+3)^2\end{gathered}

a

2

+b

2

=c

2

x

2

+(x−3)

2

=(x+3)

2

x^2+x^2-6x+9=x^2+6x+9x

2

+x

2

−6x+9=x

2

+6x+9

→Subtract x^2-6x+9x

2

−6x+9 from both sides:

x^2 = 12xx

2

=12x

→Subtract 12x from both sides:

x^2 -12x=0x

2

−12x=0

→Factor out x:

x(x-12)=0x(x−12)=0

→Separate, set = to 0, and solve:

\begin{gathered}x = 0\\x -12=0\end{gathered}

x=0

x−12=0

→ Add 12 to both sides: x = 12x=12

→So we have 0 and 12, as our answers. However, we cannot have 0 as a side length, since this would not be possible.

→All we need to do is take 12, and plug it into the equation for the shortest leg.

\begin{gathered}x - 3=?\\12-3=9\end{gathered}

x−3=?

12−3=9

3 0
3 years ago
How do I create an equivalent expression that includes parentheses so that the value of the expression is 2 for 3+8-4x2-12
natka813 [3]
(3+8-4)×2-12
3+8=11
11-4=7
7×2=14
14-12=2
5 0
3 years ago
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