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3 years ago

Answer? I don’t understand any of this

Mathematics

1 answer:

9966 [12]3 years ago

7 0

$Answer:\\ Let\: x\: be\: the\: miles\: they\: run \\ \Rightarrow We \: have \: an \: equation:0.55x + 35 + 20 = 0.65x + 45 \\ \Leftrightarrow 0.65x + 45 = 0.55x + 55 \\ \Leftrightarrow 0.1x = 10\Leftrightarrow x = 100 \\ \Rightarrow The \: rental \: costs \: of\: both \: companies \: are \: the \: same \: at \: 100 \: miles$

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I surveyed students in my Math II classes to see how many hours of television they watched the night before our big test on tria

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3 years ago

What is the value of cos(150°)?

baherus [9]

ANSWER

$-\frac{\sqrt[]{3}}{2}$

EXPLANATION

Given

$\begin{gathered} \cos \text{ 150} \\ \end{gathered}$

We can find cos 150 by using

$\begin{gathered} \cos (180-\theta)=-\cos \theta \\ \Rightarrow\cos (180-\theta) \\ =-\cos 30 \end{gathered}$

recall that

$\begin{gathered} \cos 30=\frac{\sqrt[]{3}}{2} \\ \end{gathered}$

Hence,

$\begin{gathered} \cos 150=-\cos 30 \\ =-\frac{\sqrt[]{3}}{2} \\ \end{gathered}$

Therefore, the value of cos 150 is

$-\frac{\sqrt[]{3}}{2}$

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1 year ago

What is log6 8+ log6 27

defon

$\log_6 8 + \log_6 27=\log_6 (8 \times 27)=\log_6 216=3$

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3 years ago

Read 2 more answers

The circus is coming to town. Cindy is selling tickets. The first day she sold 8 adult tickets and 5 children tickets for a tota

Galina-37 [17]

Let the price of adult ticket and children ticket be a and c respectively
8a+5c=177.50 -> 24a+15c=532.5
12a+6c=255.00 -> 24a+12c=510

24a+15c-24a-12c=532.5-510
3c=22.5
c=7.5
a=17.5

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3 years ago

Help please ! Sishsoshsishsjdhshishd

Artyom0805 [142]

(-1,-5) is the answer top left.

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2 years ago