3 years ago

Please help will give brainliest

Mathematics

1 answer:

nika2105 [10]3 years ago

7 0

i cannot read it swry

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Someone help me.......

Makovka662 [10]

The tan of a is 12/5

3 0

3 years ago

what is the sum of a 7-term geometric series if the first term is negative 11 the last turn is -45056 and the common ratio is -4

patriot [66]

For a geometric sequence with common ratio $r$ , we have

$a_n=a_{n-1}r$

that is, the $n$ -th term in the sequence is the product of the previous term and the common ratio $r$ . So

$a_n=a_{n-1}r=a_{n-2}r^2=\cdots=a_1r^{n-1}$

Then the sum of the first 7 terms is

$S_7=\displaystyle\sum_{n=1}^7a_n=a_1+a_2+\cdots+a_7$
$\implies S_7=a_1+a_1r+\cdots+a_1r^6$

Notice that

$S_7r=a_1r+a_1r^2+\cdots+a_1r^7$

so we can subtract this modified sum from $S_7$ to get

$S_7-S_7r=S_7(1-r)=a_1-a_1r^7\implies S_7=a_1\dfrac{1-r^7}{1-r}$

We're told that $a_1=-11$ and $r=-4$ , so the sum of the first 7 terms is

$S_7=(-11)\dfrac{1-(-4)^7}{1-(-4)}=144,188$

3 0

3 years ago

Find the slope of the line represented by the table of values. Please help( only correct answers)..

stellarik [79]

Answer:

Step-by-step explanation:

the slope is change in y over change is x and as y goes down 5 x goes up 3

so -5/3 is the slope

hope this helps :)

7 0

3 years ago

A farm stand wants to sell fruit to local grocery stores in packages with baskets of apples, worth $10 apiece, and baskets of pe

Scorpion4ik [409]

The answer is B 22 apples and 28 peaches

7 0

4 years ago

Which expression is equivalent to (-4y - x) - (3y - 9x)

WINSTONCH [101]

Answer: -7y+8x

Step-by-step explanation: I assume you mean to simplify

Step 1: Remove parentheses : -4y - x - (3y - 9x)

Step 2: -(3y - 9x) = -3y + 9x

Step 3: Simplify: -4y - x - 3y +9x

Step 4: Answer: -7y+8x

4 0

3 years ago