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Leya [2.2K]
3 years ago
11

Simplify the polynomial (−8x) x (−2x)

Mathematics
1 answer:
harkovskaia [24]3 years ago
4 0
Negative multiplied by a negative is positive
8 multiplied by 2 is 16 
x mutiplied by x is equal to x square
combine them all up and you get ......
16 x^{2} is the answer :-)
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The equation below can be used to find the length of a foot or forearm when you know one or the other. (length of the foot) = 0.
3241004551 [841]
This is child's play. 

So, basically:
Y=Length of foot
X= Length of your forearm. 
This is simple. Your equation is Y=0.860x + 3.302
So, if you have a forearm (x) that is 17 inches long, then plug in x as 17. This leaves you to evaluate for Y.
New equation: Y=0.860(17) +3.302
Work it out, you get: Y=14.62 + 3.302
Work that out, you get: Y= 17.922 inches long. 
And of course, Y is the foot.

So, your answer: If the forearm is 17 inches long, then the foot is 17.922 inches long. Simple.

So, part 2:
Rate of change. Well, you need slope then, because that's the same thing.
Y=mx+b, Where m=slope
Your answer turns to be 0.860 inches per length of arm, for rate of change.

Skipping the data, as that's only something you'd know.

Yes, it is indeed a function. There can't be any exponents greater than 1 on the placeholder, and it's obviously not a straight line if you plug it in. 

So yeah, it's a function.

~Hope this helps m8







5 0
3 years ago
Read 2 more answers
Three times the number of red marbles in a bag is the same as 33 1/3 percent of the number of red marbles in the bag increased b
sattari [20]

Answer:

24 red marbles

Step-by-step explanation:

Ok, why not let  R = number of red marbles.

The first sentence says:

3 * R =  (33 and 1/3) % * R  + 64

or

3R = 100/3 %*R + 64

3R = (1/3)*R  + 64

9R = R + 192

8R  = 192

R = 24 red marbles

6 0
3 years ago
Megan bought 2 1/4 pounds of bananas for $0.80 per pound and 1 1/2 pounds of strawberries for $1.10 per pound. How much more did
Dennis_Churaev [7]

Answer:

$0.15

Step-by-step explanation:

Cost of each pounds of banana = $0.80

Number of pounds of banana = 2 1/4 pounds

Total cost of banana = $0.80 × 2 1/4 pounds

= 0.80 × 9/4

= 0.80 × 2.25

= 1.8

Total cost of banana = $1.8

Cost of each pounds of strawberry = $1.10

Number of pounds of strawberry = 1 1/2 pounds

Total cost of strawberry = $1.10 × 1 1/2 pounds

= 1.10 × 3/2

= 1.10 × 1.5

= 1.65

Total cost of strawberry = $1.65

How much more did Megan spend on bananas than on strawberries?

Total cost of banana - Total cost of strawberry

= $1.8 - $1.65

= $0.15

3 0
3 years ago
Read 2 more answers
Find the length of a diagonal of a square whose perimeter is 48
Kazeer [188]

Answer:

\large\boxed{12\sqrt2}

Step-by-step explanation:

<em>a</em> - side of  square

The formula of a perimeter of a square:

P=4a

We have P = 48. Substitute:

48=4a              <em>divide both sides by 4</em>

12=a\to a=12

You can use the Pythagorean theorem, and calculate the length of a diagonal or use the formula of a diagonal of a square:

d=a\sqrt2

Substitute:

d=12\sqrt2

7 0
3 years ago
Read 2 more answers
If the number of apples in a basket is divisible by 8 and 10, what is the smallest number other than 1 that is also divisible by
valentinak56 [21]
Factor and find lcm
8=2*2*2
10=2*5
lcm=2*2*2*5=40
answer is 40
I know because of math
6 0
3 years ago
Read 2 more answers
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