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lesantik [10]
3 years ago
12

Help me w this please guysssssss

Mathematics
1 answer:
Sphinxa [80]3 years ago
7 0
I think
the answer is 12.56
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HELP. Multiply the polynomials and simplify the answer. Show your work.
Aliun [14]

Answer:

Part 1)

=12a^5-6a^4-5a^3-24a^2+12a-7

Part 2)

(2x^3-10x^2+5x+14)\div(x-2)=2x^2-6x-7

Step-by-step explanation:

Part 1)

We would like to multiply:

(3a^3-2a-7)(4a^2-2a+1)

Distribute each term from the first group into the second group. So:

=3a^3(4a^2-2a+1)-2a(4a^2-2a+1)-7(4a^2-2a+1)

Distribute further:

=(12a^5-6a^4+3a^3)+(-8a^3+4a^2-2a)+(-28a^2+14a-7)

Combine like terms:

=(12a^5)+(-6a^4)+(3a^3-8a^3)+(-28a^2+4a^2)+(-2a+14a)+(-7)

Simplify:

=12a^5-6a^4-5a^3-24a^2+12a-7

Part 2)

We would like to divide:

(2x^3-10x^2+5x+14)\div(x-2)

Using long division.

Please refer to the attached document.

For the first step, x goes into 2x³ 2x² times. Hence, we multiply our divisor by 2x².

Next, x goes into -6x^2 -6x times. Hence, we multiply our divisor by -6x.

Finally, x goes into -7x -7 times. So, we multiply our divisor by -7 and we simplify.

Therefore:

(2x^3-10x^2+5x+14)\div(x-2)=2x^2-6x-7

7 0
3 years ago
Hey can you help thanks due in 22 min
lubasha [3.4K]

Answer: 1.25 or 1 1/4 pts

4 0
3 years ago
Read 2 more answers
Which equation does NOT represent direct variation? A. Y=x/21 B. y/x=5/8 C. y-3= 3x D. y-5x=0
Serjik [45]
The gradient of the function is constant s the independent variable (x) varies The graph passes through the origin. That is to say when x = 0, y = 0. Clearly A and D pass through the origin, and the gradient is constant because they are linear functions, so they are direct variations. The graph of 1/x does not have a constant gradient, so any stretch of this graph (to y = k/x for some constant k) will similarly not be direct variation. Indeed there is a special name for this function, inverse proportion/variation. It appears both B and C are inverse proportion, however if I interpret B as y = (2/5)x instead, it is actually linear. I believe the answer is C. Hope I helped!
6 0
3 years ago
Read 2 more answers
if you divide a positive number by 12, the answer would be less than the original number? always, sometimes, or never​
elena55 [62]

Answer:

Always

Step-by-step explanation:

The rules for positive numbers is that addition and multiplication makes numbers larger. Subtraction and division makes numbers smaller.

Since 12 is a positive number, the result of dividing a positive number by 12 will make it smaller.

8 0
4 years ago
A florist uses 225 branches of winterberry to make 75 wreaths. Based on the ratio or unit rate, how many branches of winterberry
kondaur [170]

Answer:

the number of branches required to use 25 wreaths is 75 branches

Step-by-step explanation:

Given that

The florist used 225 branches of winterberry for making 75 wreaths

First we have to compute the unit rate or the ratio

= 225 ÷ 75

= 3 : 1

Now the number of branches required to use 25 wreaths is

= 3 × 25

= 75 branches

Hence, the number of branches required to use 25 wreaths is 75 branches

6 0
3 years ago
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