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2 years ago

HELP ME, CORRET ANSWER WILL GET TONNNS OF BRAINLY POINTS AND BRAINLY REWARD

Mathematics

2 answers:

Leno4ka [110]2 years ago

8 0

Answer:

23 books on le shelfy

icang [17]2 years ago

3 0

Answer:

Step-by-step explanation:

23 shelves on the book shelf

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Write an explicit formula for an, the nth term of the sequence 1, 11, 21

madreJ [45]

Answer:

an = 10n - 9.

Step-by-step explanation:

This is arithmetic with first term a1 = 1 and common difference 10.

an = a1 + d(n-1)

= 1 + 10(n - 1)

= 1 + 10n - 10

= 10n - 9.

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3 years ago

If i dont know the original price and the $ discount is 64$ and tge sales price is 72 what is the original price,?

mixer [17]

Answer:

136

Step-by-step explanation:

72+64=136(discount=listed price -sp)

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1 year ago

Please help!! x = 2 - 3 cos t, y = 1 + 4 sin t in rectangular form?<br><br> thank you! :)

sukhopar [10]

Answer:

$\frac{(x-2)^2}{9}+\frac{(y-1)^2}{16}=1$

Step-by-step explanation:

$x=2-3\cos(t)$

$y=1+4\sin(t)$

Let's solve for $\cos(t)$ in the first equation and then solve for $\sin(t)$ in the second equation.

I will then use the following identity to get right of the parameter, $t$ :

$\cos^2(t)+\sin^2(t)=1$ (Pythagorean Identity).

Let's begin with $x=2-3\cos(t)$ .

Subtract 2 on both sides:

$x-2=-3\cos(t)$

Divide both sides by -3:

$\frac{x-2}{-3}=\cos(t)$

Now time for the second equation, $y=1+4\sin(t)$ .

Subtract 1 on both sides:

$y-1=4\sin(t)$

Divide both sides by 4:

$\frac{y-1}{4}=\sin(t)$

Now let's plug it into our Pythagorean Identity:

$\cos^2(t)+\sin^2(t)=1$

$\frac{x-2}{-3})^2+(\frac{y-1}{4})^2=1$

$\frac{(x-2)^2}{(-3)^2}+\frac{(y-1)^2}{4^2}=1$

$\frac{(x-2)^2}{9}+\frac{(y-1)^2}{16}=1$

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3 years ago

What happens if you fail just one elective in 7th grade?

topjm [15]

Answer: Honestly middle school grades, especially electives don't matter much. don't worry about it.

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3 years ago

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