All categories

1 year ago

8 xy + 1 = PLEASE I CAN’T DO MATH

Mathematics

2 answers:

user100 [1]1 year ago

5 0

Photo of question ?

Semenov [28]1 year ago

4 0

Answer:

send photo of question

You might be interested in

I need help with Number 12 is heard

tia_tia [17]

Answer:

its d

Step-by-step explanation:

you set it up like a fraction then you cross multiply then divide which is 6 then you add 8+6=14

x 75

--- -----

8 100

8 0

2 years ago

Read 2 more answers

Zelda completed the right column of the table to help her find the difference.

Zinaida [17]

Answer:

His error occurred in the last step

Explanation:

He was supposed to calculate -

$\frac{5}{6} - \frac{1}{9} \\or\\\frac{15}{18} - \frac{2}{18} \\$

which would equal -

$\frac{13}{18} \\not\\\frac{17}{18}$

Because he added instead of subtracted.

Hope this helps!

5 0

2 years ago

Convert: 6y + y² = x² from rectangular to polar form.

11Alexandr11 [23.1K]

$\bf \textit{Double Angle Identities}
\\ \quad \\
sin(2\theta)=2sin(\theta)cos(\theta)
\\ \quad \\\\
cos(2\theta)=
\begin{cases}
\boxed{cos^2(\theta)-sin^2(\theta)}\\
1-2sin^2(\theta)\\
2cos^2(\theta)-1
\end{cases}\\\\\\
tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}\\\\
-------------------------------\\\\$

$\bf 6y+y^2=x^2\implies \cfrac{6y}{x^2}+\cfrac{y^2}{x^2}=1\implies \cfrac{6rsin(\theta )}{[rcos(\theta )]^2}+\cfrac{[rsin(\theta )]^2}{[rcos(\theta )]^2}=1
\\\\\\
\cfrac{6rsin(\theta )}{r^2cos^2(\theta )}+\cfrac{r^2sin^2(\theta )}{r^2cos^2(\theta )}=1\implies 
\cfrac{6sin(\theta )}{rcos^2(\theta )}+\cfrac{sin^2(\theta )}{cos^2(\theta )}=1$

$\bf \cfrac{6sin(\theta )}{rcos^2(\theta )}=1-\cfrac{sin^2(\theta )}{cos^2(\theta )}\implies \cfrac{6sin(\theta )}{1-\frac{sin^2(\theta )}{cos^2(\theta )}}=rcos^2(\theta )
\\\\\\
\cfrac{6sin(\theta )}{cos^2(\theta )\left[ 1-\frac{sin^2(\theta )}{cos^2(\theta )} \right]}=r\implies \cfrac{6sin(\theta )}{cos^2(\theta )-sin^2(\theta )}=r
\\\\\\
\cfrac{6sin(\theta )}{cos(2\theta )}=r$

5 0

2 years ago

Leticia save 30% of her monthly take-home pay to buy a set of drums your monthly take-home pay is $1340 how much does she save e

Allisa [31]

hajahssjsjdjsjsksjsk

5 0

2 years ago

Which one is cheapest

Kobotan [32]

Green Sprinkles

Pink Sprinkles is $3.20 per pound

Blue Sprinkles is $4.00 per pound

Green Sprinkles is $2.80 per pound

5 0

2 years ago