3 years ago

Can someone plsss help me with my math practice quiz I really need help

Mathematics

1 answer:

steposvetlana [31]3 years ago

4 0

What do you need help with

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Sergeeva-Olga [200]

$\int\limits^7_1 {525,600(0.42t^2+2.7t-1)} \, dx \\=525,600 \left \{\frac{0.42t^3}{3}+\frac{2.7t^2}{2}-t \right. \left \} {{7} \atop {1}} \right. \\=525,600\{[0.14(343)+1.35(49)-7]-[0.14+1.35-1]\}\\=525,600(107.17-0.49)\\=525,600(106.68)\\=56,071,008$
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3 years ago

The terminal side of θ passes through the point (10, 6). What is the exact value of cos θ in simplified form?

seraphim [82]

Answer:

$\frac{5\sqrt{34}}{34}$

Step-by-step explanation:

The formula for cos θ is a/r. A is the first number (10) and b is the second number (6). R is the hypoteneuse which can be found through r = $\sqrt{a^{2} + b^{2} }$ .

In the equation you'd write that as r = $\sqrt{10^{2} + 6^{2}$ which can be simplified to $\sqrt{136$ .

You end up with $\frac{10}{\sqrt{136} }$ and you simplify this by doing $\frac{10 }{\sqrt{136} } * \frac{\sqrt{136} }{\sqrt{136} }$ , ending with the result of $\frac{5\sqrt{34}}{\sqrt{34} }$ .