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2 years ago

Help im markin brainlest for who is right

Mathematics

1 answer:

nirvana33 [79]2 years ago

5 0

What’s the question??

You might be interested in

1) 39.39 divided by 3=

harkovskaia [24]

1. 13.13

2. 1.3421

3. 2.37

4. 0.6

5. 1.2

6. 10.8629677419

5 0

2 years ago

Using the grid below, let's plot the following points and label them with the letter.

Allisa [31]

Answer:

Step-by-step explanation:

A: look at the graph, find the x axis of 2 and on the y axis 1.

B basically the center

C look for x axis of -4, y axis for 3

D x axis -2, y axis -5

E x axis 1, y axis -3

F Center then go up 4

G x axis -5, y axis 1

H x axis -2, y axis 0

4 0

3 years ago

What is the answer to 4.0×10^7m in standard form

yuradex [85]

40,000,000

Standard form means that you are just writing out the numbers regularly. In this case, we are switching from scientific notation to standard. The 10 is raised to the 7th power, so we have to move the decimal 7 places to the right.

7 0

2 years ago

Which is bigger -7/11 or -2/3

Bad White [126]

Answer:

-2/3

Step-by-step explanation:

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