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3 years ago

What is the third term in the expansion of (x+2)^3

Mathematics

1 answer:

maw [93]3 years ago

6 0

Answer:

(x+2)^3=x^3-6x^2+12x-8

Step-by-step explanation:

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I need help with 7 (M + 5) = 21

emmainna [20.7K]

Answer:

7(M+5)=21

or, 7M+35=21

or, 7M=21-35

or, 7M=-14

or,M=-14/7

or, M=-2

8 0

3 years ago

Read 2 more answers

If Seth's family plans to drive 220 miles to their vacation spot and they would like to complete the drive in 4 hours, how many

Ede4ka [16]

Answer:

They havo to go 55 miles per hour.

Step-by-step explanation:

Just divede thenumber of miles by the number of hours 220/4 = 55.

Check your answer: 55 miles per hour where would they be in 4 hours?

55 x 4 = 220 miles. There is your answer!

^Virtuoso helper^

3 0

3 years ago

Seventy-five percent of what number is 37.5?

Svetach [21]

Answer: 37.5 is 5% of 57.6923077

Step-by-step explanation:

4 0

3 years ago

For another question, Nancy needs her to mark the numbers 1 1/3 and -1 1/3 on the number line. How many spaces does she need bet

Annette [7]

Answer:

#1: 1 if the graph is separated into 3rds

#2: same as for #1 just for negatives

Step-by-step explanation:

3 0

3 years ago

1) work out the value of (1.7x10^4)x (8.5x10^-2) give your answer in standard form.

Mashutka [201]

ANSWER TO QUESTION 1

$(1.7\times 10^4)\times(8.5\times 10^{-2})$

We rewrite to obtain;

$(1.7\times 10^4)\times(8.5\times 10^{-2})=(1.7\times 8.5)\times(10^4\times 10^{-2})$

Recall this product law of indices

$a^m\times a^n=a^{m+n}$

we apply this law to obtain,

$(1.7\times 10^4)\times(8.5\times 10^{-2})=14.45\times10^{4+-2}$

This simplifies to

$(1.7\times 10^4)\times(8.5\times 10^{-2})=14.45\times10^{2}$

We need to rewrite this in standard form;

$(1.7\times 10^4)\times(8.5\times 10^{-2})=1.445\times 10^1\times10^{2}$

We apply the product law again to get

$(1.7\times 10^4)\times(8.5\times 10^{-2})=1.445\times 10^{1+2}$

This simplifies to

$(1.7\times 10^4)\times(8.5\times 10^{-2})=1.445\times 10^{3}$

ANSWER TO QUESTION 2

$(6.8\times 10^2)\times(1.3\times 10^{-3})$

We rewrite to obtain;

$(6.8\times 10^2)\times(1.3\times 10^-3)=(6.8\times 1.3)\times(10^2\times 10^{-3})$

Recall this product law of indices

$a^m\times a^n=a^{m+n}$

we apply this law to obtain,

$(6.8\times 10^2)\times(1.3\times 10^-3)=8.84\times10^{2+-3}$

This simplifies to

$(6.8\times 10^2)\times(1.3\times 10^-3)=8.84\times10^{-1}$

This is already in standard form.

8 0

3 years ago