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LuckyWell [14K]
3 years ago
7

Help me?????? please

Mathematics
1 answer:
lutik1710 [3]3 years ago
4 0
1. Match to B
2. Match to A
3. Match to D
4. Prime

Hope it helps!
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How should 13,079 be written in in expanded form​
Thepotemich [5.8K]

Answer:

10,000 + 3,000 + 70 + 9

Step-by-step explanation:

It will be 10,000 + 3,000 + 70 + 9

That is how expanded form works.

Hope it helps :)

If you have any questions ask me.

5 0
2 years ago
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Represent 240.149 in two different ways
choli [55]

Answer:

240 149/1000, 240149/1000

Step-by-step explanation:

Mixed Number, Improper Fraction

8 0
3 years ago
If $10,000 is invested in an account at 4.8% annual simple interest, how long will it take for the account balance
Lesechka [4]
10000+4.8%=10480
10480+4.8%=10983.04
10983.04+4.8%=11510.22592


so 3 years
7 0
3 years ago
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A pyramid at a museum has a height of 21 meters and a square base with side lengths of 30 meters. 21 m 30 m What is the approxim
Orlov [11]

Answer: 6,300 m^3

Step-by-step explanation:

Put numbers into calculator

5 0
2 years ago
Write the sum using summation notation, assuming the suggested pattern continues. -9 - 4 + 1 + 6 + ... + 66
Ipatiy [6.2K]

Answer:

Summation notation is:

\sum_{n=1}^{16}[5(x-1)-9]

If you prefer it a little more simplified:

\sum_{n=1}^{16}(5x-14)

Step-by-step explanation:

First my favorite part, finding a pattern between the consecutive terms.

This is an arithmetic series because the terms are going up by 5 each time.

So arithmetic sequence, think linear equations:

x     |      y

1            -9

2           -4

3             1

4             6

..................

n             66

We are going to have to find that n but will will eventually...

The equation for a line in point slope form is y-y_1=m(x_x_1) where (x_1,y_1) is a point on the line and m is the slope.

We are already have the slope is 5 (the slope is the common difference in arithmetic sequence).

I'm going to use the first point (1,-9).

So the equation in point slope form is y-(-9)=5(x-1)

Subtract 9 on both sides:

y=5(x-1)-9

Now we need to know how many terms we are adding so what is x if y=66.

66=5(x-1)-9

Add 9 on both sides:

75=5(x-1)

Divide both sides by 5:

15=x-1

Add 1 on both sides:

16=x

We have 16 terms in this sequence where the 16th term is 66.

Summation notation is:

\sum_{n=1}^{16}[5(x-1)-9]

You could simplify the 5(x-1)-9.

Distribute:  5x-5-9

Add like terms:  5x-14

3 0
2 years ago
Read 2 more answers
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