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3 years ago

15

If you deposited a penny on May 1st and doubled what you deposited each day for a month, how many pennies would you be depositin

g on May 31? What's the formula for the geometric sequence?

1 answer:

PIT_PIT [208]3 years ago

8 0

Answer:

30

Step-by-step explanation:

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PLEASE HELP ME ASAP!!!!!

zheka24 [161]

Answer:

Can you show me the pattern?

6 0

3 years ago

Read 2 more answers

Which line has a constant of proportionality between y and x of 1/2

Pepsi [2]

Answer:

Line c

Step-by-step explanation:

y= $\frac{x}{2}$

5 0

3 years ago

Evaluate the line integral for x^2yds where c is the top hal fo the circle x62 _y^2 = 9

natulia [17]

Parameterize $C$ by

$\mathbf r(t)=\langle x(t),y(t)\rangle=\langle3\cos t,3\sin t\rangle$

where $0\le t\le\pi$ . Then the line integral is

$\displaystyle\int_Cx^2y\,\mathrm dS=\int_{t=0}^{t=\pi}x(t)^2y(t)\left\|\frac{\mathrm d\mathbf r(t)}{\mathrm dt}\right\|\,\mathrm dt$
$=\displaystyle\int_{t=0}^{t=\pi}(3\cos t)^2(3\sin t)\sqrt{(-3\sin t)^2+(3\cos t)^2}\,\mathrm dt$
$=\displaystyle3^4\int_{t=0}^{t=\pi}\cos^2t\sin t\,\mathrm dt$

Take $u=\cos t$ , then

$=\displaystyle-3^4\int_{u=1}^{u=-1}u^2\,\mathrm du$
$=\displaystyle3^4\int_{u=-1}^{u=1}u^2\,\mathrm du$
$=\displaystyle2\times3^4\int_{u=0}^{u=1}u^2\,\mathrm du$
$=54$

6 0

3 years ago

If line AD is a tangent to circle B at point C, and m∠ABC = 55º, what is the measure of ∠BAD?

alexandr1967 [171]

None of those. ∠BAD = 180º - 90º - 55º = 35º, because ABC is a right triangle.

4 0

3 years ago

The lengths of the sides of a triangle are x,x+1 and 7 centimeters and the perimeter of the triangle is 56 centimeters. The equa

____ [38]

Answer:

the longest side is 25

Step-by-step explanation:

the equation would be x+ x+1 + 7 for the 3 sides of the triangle

x + (x+1) + 7=56

combine like terms

2x+8 = 56

subtract 8 from each side

2x = 48

divide by 2

x = 24

the sides are

x=24

x+1 = 25

7

the longest side is 25

7 0

3 years ago