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Zielflug [23.3K]
3 years ago
12

4. Evaluate the geometric series given a1 = 4, r = -2 and n = 12

Mathematics
1 answer:
katrin2010 [14]3 years ago
3 0

we know that

a1=7

r=2

n=14

then

Sn=a1*[(r^n)-1]/(r-1)-------------->S14= 7*[(2^14)-1]/(2-1)=114681

the answer is 114681

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2x+ 20 + 3x +40 =<br> 60 + 5X
umka21 [38]
First answer: 160
Second answer: 300
6 0
3 years ago
if your car gets 28 miles per gallon, how much does it cost to drive 310 miles when gasoline cost $3.50 per gallon?
Butoxors [25]
Hi,


Work:

28miles = 1gallon

To find the cost of gallons spend for 310 miles you need to first find the amount of gallons consumed on 310 miles path.

310 \div 28 = 11.07gallons

If each costs 3.5$ you need to multiply gallons with money.

3.5 \times 11.07 = 38.745

You would spend 38.745$ to drive 310 miles.

Hope this helps.
r3t40
3 0
4 years ago
you are going to an amusement park over spring break. the cost of admission to enter the park the park is $30 and the rides are
mash [69]

Answer:

30+6x=100

Step-by-step explanation:

100-30=70

6*11= 66

The total number of rides he can go on is 11. He will have a remaining balance of $4.00 which is not enough to pay for another ride.

Hope this helps have a wonderful day

7 0
3 years ago
PUPUL 2
grandymaker [24]

Answer:

37.045

Step-by-step explanation:

4 0
3 years ago
What is the y-coordinate of the point that divides the directed
e-lub [12.9K]

Answer:

(D)5

Step-by-step explanation:

Given the point J(-3,1) and K(8,11).

The line segment that divides the segment from J to K in any given ratio can be determined using the formula.

P(x,y)=\left(\dfrac{mx_2+nx_1}{m+n} ,\dfrac{my_2+ny_1}{m+n}\right)

In the given case:

(x_1,y_1)=(-3,1), (x_2,y_2)=(8,11), m:n=2:3

Since we are to determine the y-coordinate of the point that divides JK into a ratio of 2:3, we have:

\dfrac{my_2+ny_1}{m+n}=\dfrac{2*11+3*1}{3+2}\\\\=\dfrac{22+3}{5}\\\\=\dfrac{25}{5}\\\\=5

The y-coordinate of the point that divides the directed  line segment from J to K into a ratio of 2:3 is 5.

The correct option is D.

3 0
3 years ago
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