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olganol [36]
3 years ago
10

Find the sum of the finite geometric sequence whose first term is 1.4, whose ratio is 0.5, and which has six terms.

Mathematics
1 answer:
sleet_krkn [62]3 years ago
7 0

Answer:

2.75632 rounded to 5 decimal places

Step-by-step explanation:

a(r^n-1)/r-1 is the formula for sum of geometric series

where a= first term (1.4)

n= number of terms(6)

r= common ratio(0.5)

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What is the probability of choosing a heart or a spade from a deck of cards? Type your answer as a fraction.
labwork [276]

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26/52 or 1/2

Step-by-step explanation:

There are 13 cards per suit therefore there must be 26

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What does unit rate mean​
satela [25.4K]

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Step-by-step explanation:

6 0
3 years ago
Janet has three times as many dimes as nickels and twice as many quarters as nickels. If she has $5.10 in all, how many nickels,
Mama L [17]
If number of nickel = n
number of dimes = 3n
number of quarters = 2n

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6 0
4 years ago
Find the value of x in a triangle. x-20, x+10, x-20
tatyana61 [14]

The value of the angles should be. (x-40°). , (x-20°), (½x-10°) , not (x-40°) + (x-20°)+(½x-10°)

Sum of all the interior angles of a triangle is 180°.

So a equation can be made by the given data,

(x-40°) + (x-20°) + (½ x-10°) = 180°

x-40°+x-20°+½x-10° = 180°

2x+½x -60°-10° = 180°

5/2 x - 70° = 180°

5/2 x = 180° + 70°

5/2 x = 250°

x = 250° × 2/5

x = 50° × 2

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So the angles are

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x-20° = 100°–20° = 80°

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The answer can be checked by putting the values of the angle we got in the second statement i.e. Sum of all the interior angles of a triangle is 180°.

60° + 80° + 40° = 100° + 80° = 180°

6 0
3 years ago
Look at the circle you created that has point C (the midpoint of ) as its center and passes through point A. What can you say ab
Kamila [148]

Answer:

Part C

Look at the circle you created that has point C(the midpoint of AB) as its center and passes through point A.

What can you say about AB, about the inscribed angle of a circle, and include your reasoning in your response.

6 0
2 years ago
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