When you solve the equation x + 1 = 2x for x, the solution is 1. 1) Square both sides of the equation, and verify that your solu
1 answer:
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Given that ABC is a right triangle.
The measure of ∠A is 45° and AB = 9
We need to determine the equations that could be used to solve the unknown lengths of ΔABC
<u>Option A</u>:
The length of BC can be determined using the trigonometric ratios.
where ,
and
Hence, substituting the values, we get;
Hence, Option A is the correct answer.
<u>Option B</u>:
The length of BC can be determined using the trigonometric ratios.
where ,
and
Hence, substituting the values, we get;
Thus, the length of BC can be determined using
Hence, Option B is not the correct answer.
<u>Option C</u>:
The length of AC can be determined using the trigonometric ratios.
where ,
and
Substituting the values, we get;
Thus, the length of AC using the trigonometric ratios is
Hence, Option C is not the correct answer.
<u>Option D</u>:
The formula for is given by the formula,
where ,
and
Hence, substituting the values, we get;
Thus, the given equation is wrong.
Hence, Option D is not the correct answer.
<u>Option E</u>:
The formula for is given by the formula,
where ,
and
Substituting the values, we get;
Hence, the given equation is not possible.
Thus, Option E is not the correct answer.
Hello.
First of all, let the number be t.
8 times t can be written like this:
Notice that the number is before the variable and the times sign (×) is not there.
We can write it as 8×t, but we usually write it as 8t.
The sum of means we add:
8t+21
Now, "less than" is "<" :
Therefore, the answer is
I hope it helps.
Have a nice day.