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4 years ago

9

Write the steps for how to use a number line to multiply a 2 digit number by 20. Give an example

1 answer:

lidiya [134]4 years ago

8 0

Draw the number line then put the numbers on the number line by twos. Fore example, 2-4-6-8-10

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Helppppppppppppppppppppppppppppppppppppppppppppppp

Maslowich

i belive it is xy^2 but tell me if ou need more

3 0

3 years ago

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12) Find the sum, S7 for the geometric series {1 + 5 + 25 + - + 15625).

zhenek [66]

<u>Understanding:</u>

The sum of a geometric series is, $a+ar+ar^2+ar^3+...$ , with a being the start point and r is the common ratio. We can also use the following formula to make life easier $S_n=a\frac{1-r^n}{1-r}$ , a is your start point, r is the common ratio, and n is the number of terms, which in our case is S7.

<u>Solution:</u>

Our start point is 1, $a=1$ ,

The common ratio is 5, $r=5$ ,

And finally, the number of terms is 7, $n=7$ .

$S_n=a\frac{1-r^n}{1-r} \\=(1)\frac{1-(5)^{(7)}}{1-(5)} \\=\frac{1-78125}{1-5} \\=\frac{-78124}{-4}\\=19531$

The answer is [A] 19531.

7 0

3 years ago

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What is 5/1/4 converted to a decimal ?

nekit [7.7K]

Answer:

it is 5.25

Step-by-step explanation:

ignore this i just need more letters XD

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3 years ago

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Hey guys whats a good calculator to get for maths

kirill [66]

Answer: CasioFX-CG50

Step-by-step explanation: you can get it on amazon

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3 years ago

What is the answer to this 3a-b;a=4b=6

stepan [7]

Answer:

3a-b

3×4-6 solve by using the rules of BODMAS

12-6

6(ans)

Hope it helps

8 0

3 years ago