Answer:
Hi,
Step-by-step explanation:
Using Al'Kashi theorem (law of cosines),
x²=26²+19²-2*26*19*cos(31°)
x²= 190,11870690...
So

I hope that this is not a control.
Q1. The answer is <span>1 over 5 to the 3rd power.
</span>5 to the 5th is 5⁵
5 to the 8th is 5⁸
5 to the 5th over 5 to the 8th is

To simplify, we will use two rules:

Therefore:


is the same as 1 over 5 to the 3rd power.
Q2. The answer is <span>(53)−4.
The exponents are multiplied when are expressed in the form:
</span>

So,

Other choices are incorrect:
<span>one third to the 4th times one third to the 7th is </span>

3 to the 7th over 3 to the 15th is

<span>45 ⋅ 42 is </span>
Answer:
5 x 0.6 = 5 x 6tenths, as 6/10 = 0.6
= 30 tenths
7 x 0.8 = 7 x 8tenths, as 8/10 is 0.8
= 56 tenths
Step-by-step explanation:
If you really want a more detailed explanation, just reply to this message.
Answer:
(4,-2.5)
Step-by-step explanation:
first one is x cordination...it is under the 4
second one is Y cordination..its between -2 and -3
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