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amm1812
3 years ago
9

Convert r= 2 / 7sinθ−cosθ to rectangular form.

Mathematics
2 answers:
fomenos3 years ago
4 0

Answer: <em>If u want to know what</em><em> </em><em>2/7 = this is the answer.. 0.285714 </em>

Step-by-step explanation:                          

<em>i think i can answer that but i don't understand sinθ-cosθ what is that and what does it mean pls give me info on what this is so i can help u with this question. </em>

<em>also be safe! have a great day :)</em>

Nataly [62]3 years ago
4 0

ANSWER:

x = rcosθ, y = rsinθ

Then,

cosθ = x/r and sinθ = y/r

Plug in values for cos and sin in the equation and we are done.

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Solve for x.<br><br> log x + log 3 = log 18<br><br> Enter your answer in the box.
Makovka662 [10]

log(x) + log(3) = log(18)

log(x) + 0.477121 = 1.255273

Add -0.477121 to both sides.

log(x) + 0.477121 + −0.477121 = 1.255273 + −0.477121

log(x)+0 = 0.778152

Divide both sides by 1.

log(x)+0/1 = 0.778152/1

log(x)=0.778152

Solve Logarithm

log(x) = 0.778152

10log(x) = 100.778152

x = 100.778152

x = 6.00001

3 0
4 years ago
Read 2 more answers
What is the true solution to the equation below? 2 in e in2×-in e in 10×= in 30 A x=30 B x=75 C x=150 D x=300
hodyreva [135]

Answer:

Option B.

Step-by-step explanation:

Let as consider the given equation:

2\ln e^{\ln 2x}-\ln e^{\ln 10x}=\ln 30

It can be written as

2(\ln 2x)-(\ln 10x)=\ln 30         [\because \ln e^a=a]

\ln (2x)^2-(\ln 10x)=\ln 30        [\because \ln a^b=b\ln a]

\ln \dfrac{4x^2}{10x}=\ln 30        [\because \ln \dfrac{a}{b}=\ln a-\ln b]

\ln \dfrac{2x}{5}=\ln 30

On comparing both sides, we get

\dfrac{2x}{5}=30

Multiply both sides by 5.

2x=150

Divide both sides by 2.

x=75

Therefore, the correct option is B.

7 0
4 years ago
A. X = -2<br><br> B. X = 2<br><br> C. X = 3<br><br> D. X = 0
Citrus2011 [14]

Answer:

(-2,3)

so the a answer is -2 on the x axis

3 0
3 years ago
A survey is taken among customers of a fast-food restaurant to determine preference for Hamburger and Cheeseburger. Of 180 respo
stiv31 [10]

Using it's concept, it is found that the probabilities are given as follows:

a.1/2, 1/9, 5/9.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

In this problem, 90 out of 180 individuals are children, hence the probability is given by:

p = 90/180 = 1/2.

Out of 90 adults, 60 - 50 = 10 preferred cheeseburgers, hence the probability is given by:

p = 10/90 = 1/9.

Of the 180 individuals, 90 are children, and 10 are adults who prefer cheeseburgers, hence the probability is given by:

p = 100/180 = 10/18 = 5/9.

Hence option a is correct.

More can be learned about probabilities at brainly.com/question/14398287

#SPJ1

5 0
2 years ago
An auto parts store is examining how many items were purchased per transaction at the store as compared to their online website.
anastassius [24]

Answer:

0.4394

Step-by-step explanation:

given that an auto parts store is examining how many items were purchased per transaction at the store as compared to their online website

The data is shown below:

             Frequency  Frequency*Midpt  

    Midpt Online Total Online Total

1-3     2      40 147             80 294

4-6         5      60 103            300 515

7-9         8     15 32           120 256

10-12 11       5 18             55 198

           120       300            555 1263

Thus we find total items purchased on line = 555

and total items overall purchased = 1263

Hence the probability that a randomly selected item was purchased online

=\frac{555}{1263} \\=0.4394

4 0
3 years ago
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