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Tasya [4]
4 years ago
6

Find the first six terms of the sequence. a1 = -1, an = 2 • an-1(7 points)

Mathematics
1 answer:
Ira Lisetskai [31]4 years ago
5 0
An = 2 * a(n-1)
a1 = -1
a2 = 2 * a1 = 2 * -1 = -2
a3 = 2 * a2 = 2 * -2 = -4
a4 = 2 * a3 = 2 * -4 = -8
a5 = 2 * a4 = 2 * -8 = -16
a6 = 2 * a5 = 2 * -16 = -32

Therefore, first six term are: -1, -2, -4, -8, -16, -32
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Simplify the following expression completely using distribution and combining like terms
Thepotemich [5.8K]

Answer:

Answer:

It is D

Step-by-step explanation:

Distribute:

=(4)(5m)+(4)(3)+2m

=20m+12+2m

Combine Like Terms:

=20m+12+2m

=(20m+2m)+(12)

=22m+12

8 0
3 years ago
Read 2 more answers
Which exponential function goes through the points (1, 16) and (4, 128)?
djyliett [7]

Answer:

Here is the complete question (attachment).

The function which represent the given points are f(x)=8(2)^{x}

Step-by-step explanation:

We know that a general exponential function is like,y=a(b)^{x}

We can find the answer by hit and trial method by plugging the values of (x,y) coordinates.

Here we are going to solve this with the above general formula.

So as the points are (1,16) then for x=1,\ y=16

Can be arranged in terms of the general equation.

ab^1=16...equation(1) and ab^4=128...equation(2)

a\times b=16, then\ a=\frac{16}{a}

Plugging the values in equation 2.

We have

\frac{16}{b} b^4=128,16\times b^3=128,b=\sqrt[3]{\frac{128}{16}} =\sqrt[3]{8}=2

Plugging b=2 in equation 1.

We have a=\frac{16}{b} =\frac{16}{2} =8

Comparing with the general equation of exponential a=8 and b=2

So the function which depicts the above points =y=8(2)^x

From theoption we have B as the correct answer.

7 0
4 years ago
The difference of two and a number is at least negative one
earnstyle [38]

Answer:

2 - x <u>></u> -1

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP!! URGENT
Slav-nsk [51]

1. The problem statement tells you to find "the area of the hexagonal face".

2. If we assume the intent is to find the shaded area of the face only, it differs from the area of a regular hexagon in that there is a hole in the middle.

3. You must find the area of the regular hexagon, and subtract the area of the circular hole in the middle.

4. The formula for the area of a circle in terms of its radius is

... A = πr²

5. The formula for the area of a regular hexagon in terms of the radius of the circumcircle is

... A = (3√3)/2·r²

6. The radius of the circumcircle of the regular hexagon is given. No additional information is needed.

7. You can use the trig functions of the angles of an equilateral triangle to find the apothem, but there is no need for that when you use the formula of 5.

8. All this is unnecessary. The apothem is (8 mm)·(√3)/2 = 4√3 mm ≈ 6.9282 mm, the shorter leg is (8 mm)·(1/2) = 4 mm. The perimeter is 6·8 mm = 48 mm.

9. The area of the hexagon is

... A = 3√3/2·(8 mm)² = 96√3 mm² ≈ 166.277 mm²

10. The area of the circle is

... A = π·(4 mm)² = 16π mm² ≈ 50.265 mm²

11. The area of the hexagonal face is approximately ...

... 166.277 mm² - 50.265 mm² = 116.01 mm²

6 0
3 years ago
Factor each polynomial SHOW YOUR WORK please help me <br><br> x^2-9x+10<br><br> x^2+7x+10
Oliga [24]

Step-by-step explanation:

x²-10x+x-10

x(x-10)+1(x-10)

(x-10)(x+1)

x²+7x+10

x²+5x+2x+10

x(x+5)+2(x+5)

(x+5)(x+2).

hope this helps you.

for the first question it will be<u> </u><u>-</u><u>1</u><u>0</u><u> </u><u>.</u>

4 0
3 years ago
Read 2 more answers
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