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7nadin3 [17]
2 years ago
7

Find the sum of the first 47 terms of the following series, to the nearest integer. 9,18,27,...

Mathematics
2 answers:
luda_lava [24]2 years ago
9 0
18 is the answer hood this will help you
Shkiper50 [21]2 years ago
3 0

Answer:

10152

Step-by-step explanation:

Common difference:

18-9=9

27-18=9

d=9

Explicit formula:

an = a1 +(n-1)d

a47 = 9+ (46)(9)

a47 = 423

Find sum: Sn = n(a1+an)/2

47(9+423)/2

47(423)/2 = 20304/2 = 10152

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How can parallel lines be used to compare figures E and F? Explain your reasoning.
Aneli [31]

Answer:

The similarities are

1) The length of E and F can be described by two parallel lines spaced 3 blocks apart where the parallel line on the left of both E and F is 2 blocks long, while the parallel line on the right is one block long

2) Both height of E and F can be described by two parallel lines spaced 2 blocks apart  where the parallel line on the top of both E and F is 3 blocks long, while the parallel line at the bottom is one block long

3) The interior of E an F can be described by parallel lines 2 blocks long in the horizontal portion and one block long in the vertical portion

The differences are

1) The difference between E and F is that the parallel lines used for the construction of E are all one block higher than that of F

2) The other difference is that all the lines used for the construction of the figure E are 3 blocks to the left of those used for the construction of F

Figure F is essentially the translation of figure E three blocks to right and one block down

Step-by-step explanation:

3 0
3 years ago
A line containing the points (9, 1) and (5, 5) intersects the x -axis at what point?
Troyanec [42]

Answer:

It intersects the x-axis at x = 10

Step-by-step explanation:

Step 1: Find slope <em>m</em>

m = (5 - 1)/(5 - 9)

m = 4/-4

m = -1

y = -x + b

Step 2: Find <em>b</em>

5 = -5 + b

b = 10

Step 3: Rewrite equation

y = -x + 10

Step 4: Find <em>x</em> when <em>y</em> = 0

0 = -x + 10

-10 = -x

x = 10

So the graph crosses the x-axis at 10.

4 0
3 years ago
What is the slope of the line?​
Maurinko [17]

Answer:

-1

Step-by-step explanation:

i think thats corrext

3 0
3 years ago
Read 2 more answers
Serena makes $9 per hour cutting lawns. Each day, she earns about $15 in tips. If Serena made no less than $110 on Monday, which
Serhud [2]
The total amount Serena earns is the sum of her regular wage and the tips. The amount she earns from the wage is equal to 9h. This total should be more than or equal to $110. This is mathematically expressed as,
                                      9h + 15 ≥ 110
3 0
3 years ago
Read 2 more answers
Alex has 1/3 of a candy bar. He wants to share what he has left of his candy bar with his 2 friends, so that all three of them g
yulyashka [42]

If the 1/3 candy is shared into three equal parts. Then the fraction of the candy bar will each kid get will be 1/9.

<h3>What is division?</h3>

Division means the separation of something into different parts, sharing of something among different people, places, etc.

Alex has 1/3 of a candy bar.

He wants to share what he has left of his candy bar with his 2 friends so that all three of them get equal portions.

Then the fraction of the candy bar will each kid get will be

\rightarrow \dfrac{1/3}{3}\\\\\rightarrow  \dfrac{1}{3\times3}\\\\\rightarrow  \dfrac{1}{9}

More about the division link is given below.

brainly.com/question/369266

#SPJ1

7 0
2 years ago
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