Please please I beg you
2 answers:
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The artistic crop isn't helpful; it cuts off some vertex names.
The circumcenter H is the meet of the perpendicular bisectors of the sides, helpfully drawn. We have right triangle ELH, right angle L, so
EH² = HL² + EL²
EL = √(EH² - HL²) = √(5.06²-2.74²) ≈ 4.2539393507665339
Since HL is a perpendicular bisector of EF, we get congruent segments FL=EL.
Answer: 4.25
Answer:
The amount invested at 4% per year was $3,000
The amount invested at 4.5% per year was $6,000
The amount invested at 2.5% per year was $1,000
Step-by-step explanation:
Let
x -----> the amount invested at 4% per year
2x ----> the amount invested at 4.5% per year
10,000-3x -----> the amount invested at 2.5% per year
we know that
The interest earned by the amount invested at 4% per year plus the interest earned by the amount invested at 4.5% per year plus the interest earned by the amount invested at 2.5% per year must be equal to $415
so
Solve for x
therefore
The amount invested at 4% per year was $3,000
The amount invested at 4.5% per year was $6,000
The amount invested at 2.5% per year was $1,000
first, find the numeric value for 11/15
second to find theta, simply do the <em>inverse</em> cos (which is cos^-1) of the first answer.
now you know theta, just do the sin of 90 - theta and that's it!
since you know whatr cos(theta) is, you just take the inverse cos of that number to get theta and 'reverse' cos, essentially. you are just solving for theta, by reversing the cos function with cos^-1
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