1.what is the sum or difference? 3x^8-7x^8A.-4x^16B. -21x^8C. -4x^8D. 10x^-8

Mathematics

2 answers:

Annette [7]3 years ago

8 0

Answer:

Step-by-step explanation:

Dafna1 [17]3 years ago

5 0

To simplify the given equation, you want to combine like terms. Since both terms have x^8, we can add the coefficients and leave the x^8
3x^8-7x^8 (do 3-7)
=-4x^8 so the answer is C

Hope this helps

You might be interested in

What is (4y) to the second power when y =-5

Degger [83]

So it's 4x-5 equal to -20 to the second power
-20x-20 =400
The answer is 400

7 0

3 years ago

a bowl contains 4 peaches and 4 apricots. Maine randomly selects one, puts it back, and randomly selects another. what is the pr

almond37 [142]

1/4 or 25% because...

The probability that Maine picks an apricot is 4/8

The probability that Maine picks an apricot after putting the first apricot back is still 4/8

4/8 x 4/8 = 16/64 = 1/4

4 0

2 years ago

Select all ratios equivalent to 1:8.

DochEvi [55]

Answer: 2:16 - 3:24 - 4:32 - 5:40 - 6:48 - 7:56 - 8:64 // just keep adding each side to its own side

Step-by-step explanation:

Well I don't know the answer choices so

6 0

2 years ago

Use an area model to solve. 2 2/3 x 1 1/3?

natima [27]

<span>the answer is : 9.77777777778</span>

6 0

3 years ago

Read 2 more answers

URGENT!!!

Makovka662 [10]

Answer:

Train A - 50 miles per hour

train B - 30 miles per hour

Step-by-step explanation:

Let x mph be the speed of the train B, then the speed of the train A is (x+20) mph.

In 3 hours,

train A travels 3(x+20) miles
train B travels 3x miles

In total, they covered the distance of 240 miles, so

$3(x+20)+3x=240\ \ \ \text{[Divide by 3]}\\ \\x+20+x=80\\ \\2x=80-20\\ \\2x=60\\ \\x=30\ mph\\ \\x+20=30+20=50\ mph$

8 0

2 years ago