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Daniel [21]
3 years ago
8

NEED HELP DUE IN 2 MINUTES!!!!

Mathematics
1 answer:
Natalija [7]3 years ago
5 0
B. 40 centimeters long
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What is the sum of the first seven terms of the geometric series where a1 = 10 and r = −2?
matrenka [14]
Sum_{7} = 10 *  \frac{1- (-2^{7}) }{1 - (-2)} =  10*  \frac{1+128}{1+2} = 10*  \frac{129}{3} =   10 * 43 = 430
4 0
3 years ago
What do u mean by lcm​
algol13
Least common multiple
8 0
2 years ago
3. Escribe la ecuación de la elipse que cumple con:<br> F1(-3,0) F2(3,0) y a=4
maks197457 [2]

Answer:

90

Step-by-step explanation:

7 0
3 years ago
When 5 is added to a set of 3 numbers the mean increases to 4.6. What was the mean of the original 3 numbers?
SVEN [57.7K]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷  Multiply 4.6 by 4 to get the sum of the numbers after 5 was added:

4.6 x 4 = 18.4

^ This is the new total

Subtract 5 from this:

18.4 - 5 = 13.4

Divide this value by 3 to get the original mean:

13.4/3 = 67/15

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

7 0
3 years ago
Consider a parallelogram in which one side is 3 inches long, another side measures 4 inches, and the measurement of one angle is
goldenfox [79]

Answer:

Only one parallelogram can be drawn based on the given conditions.

Step-by-step explanation: just believe me

7 0
3 years ago
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