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Gnom [1K]
3 years ago
7

Please answer quick, I will give you Brainliest if you answer right first <3

Mathematics
2 answers:
elena55 [62]3 years ago
7 0
The answer is D because of the dot being closed with a dark circle and on the right side of the dot is open up with no shade of black
harkovskaia [24]3 years ago
3 0
C because when the dot is black it is equal to or greater/less than the number the dot is on and if the dot is blank it is only greater/less than that the number not possibly equal to.
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Gabriel drives 80 kilometers in one hour. How many kilometers does he drive in 1.5 hours.
Mekhanik [1.2K]
He drive 120 kilometres in 1.5 hours.
5 0
3 years ago
Read 2 more answers
Find the future value of an annuity due of $400 each quarter for 4 1 2 years at 13%, compounded quarterly. (Round your answer to
Flura [38]

Answer:

$9891.23


Step-by-step explanation:

The formula for future value of annuity due is:

FV=P[\frac{(1+r)^{n}-1}{r}]*(1+r)

Where,

  • FV is the future value of the annuity (what we need to find)
  • P is the periodic payment (here it is $400)
  • r is the interest rate per period (here 13% yearly interest is actually \frac{13}{4}=3.25 percent per period(quarter))
  • n is the number of periods (here the annuity is for 4\frac{1}{2} years, which is 4\frac{1}{2}*4=18 periods, since quarterly and there are 4 quarters in 1 year)

Substituting all those values in the equation we get:

FV=400[\frac{(1+0.0325)^{18}-1}{0.0325}]*(1+0.0325)\\=400[23.9497]*(1.0325)\\=9891.23

Hence, the future value of the annuity due is $9891.23

3 0
3 years ago
Please my new and old friends on here please help i already said how i was feeling and some people made me feel better so yay ju
tino4ka555 [31]
I don’t really understand what you mean could you be more specific please.
6 0
3 years ago
Find an equation of the tangent plane to the given surface at the specified point. z = ln(x − 8y), (9, 1, 0)
Archy [21]

Answer:

x - 8y - z = 1

Step-by-step explanation:

Data provided according to the question is as follows

f(x,y) = z = ln(x - 8y)

Now the equation for the tangent plane to the surface

For z = f (x,y) at the point P (x_0,y_0,z_0) is

z - z_0 = f_x(x_0,y_0)(x-x_0) + f_y(x_0,y_0)(y-y_0)\\

Now the partial derivatives of f are

f_x(x,y) = \frac{1}{x-8y} \\\\f_y(x,y) = \frac{8}{x-8y} \\\\P(x_0,y_0,z_0) = (9,1,0)\\\\f_z(9,1,0) = (\frac{1}{x-8y})_^{(9,1,0)}

\\\\=\frac{1}{9-8}

= 1

Now

f_y(9,1,0)=(\frac{8}{x-8y})_{(9,1,0)}\\\\ = -\frac{8}{9 - 8}

= -8

So, the tangent equation is

z - 0 = 1\times (x - 9) -8\times (y - 1)

Now after solving this, the following equation arise

z = x - 9 - 8y + 8

z = x - 8y - 1

Therefore

x - 8y - z = 1

4 0
3 years ago
Please Help, this is math problems
MariettaO [177]

Answer:

1/8 for the first one then 1/6 for the second one

Step-by-step explanation:

 

5 0
3 years ago
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