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arsen [322]
3 years ago
12

Simplify 2x − 8y + 3x2 + 7y − 12x

Mathematics
2 answers:
Tatiana [17]3 years ago
8 0
<span><span><span><span><span>2x </span>− <span>8y </span></span>+ <span>3<span>x^2 </span></span></span>+ <span>7y </span></span>− <span>12x
</span></span><span><span><span><span><span><span><span>2x </span>+ </span>−<span>8y </span></span>+ <span>3<span>x^2 </span></span></span>+ <span>7y </span></span>+ </span>−<span>12x</span></span>Combine Like Terms:<span><span><span><span><span>2x </span>+ <span>−<span>8y </span></span></span>+ <span>3<span>x^2 </span></span></span>+ <span>7y </span></span>+ <span>−<span>12x</span></span></span><span><span><span>(<span>3<span>x^2</span></span>) </span>+ <span>(<span><span>2x </span>+ <span>−<span>12x</span></span></span>) </span></span>+ <span>(<span><span>−<span>8y </span></span>+ <span>7y</span></span>)</span></span><span><span><span>3<span>x^2 </span></span>+ <span>−<span>10x </span></span></span>+ <span>−<span>y
Answer
</span></span></span><span><span>3<span>x^2 </span></span>− <span>10x </span></span>− <span>y</span>
zavuch27 [327]3 years ago
6 0
Here,s the answer i got   3x2<span> - 10x - y</span> just by simplifying 
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Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
sashaice [31]

Answer:

k = –10

Step-by-step explanation:

From the question given above, the following data were obtained:

f(x) = x³ – 6x² – 11x + k

Factor => x + 2

Value of K =?

Next, we shall obtained the value of x from x + 2. This is illustrated below:

x + 2 = 0

Collect like terms

x = 0 – 2

x = –2

Finally, we shall determine the value of k as illustrated below:

f(x) = x³ – 6x² – 11x + k

x = –2

Thus,

f(–2) = 0

x³ – 6x² – 11x + k = 0

(–2)³ – (–2)² – 11(–2) + k = 0

–8 – (4) + 22 + K = 0

–8 – 4 + 22 + K = 0

10 + k = 0

Collect like terms

k = 0 – 10

k = –10

Thus, the value of k is –10

7 0
3 years ago
HELP 20 POINTS!
Butoxors [25]
For the first blank where it asks for the perimeter, the perimeter is all the outside sides of a shape added up. So, 6 + 1 + 2 + 4 + 4 + 5 = 22.

For the second blank, you just multiply the entire perimeter by 5, so, 22 times 5=110.

For the third blank, it is basically the same as the previous question. The answer is 5.

For the fourth blank, it is the same perimeter as the first blank, but instead of centimeters, it is in k. So, 22k.

Hope this helped! :)
4 0
3 years ago
Read 2 more answers
At Best Buy they have a 60" TV that sells for $1250 and is on sale for 15% off. If the sales tax is 6.5%, what is the final cost
NNADVOKAT [17]

Answer:

Step-by-step explanation:

The sale price = Initial Cost - 15% of the initial Cost

The sale price = 1250 - 15/100 * 1250

The sale price = 1250 - 187.5

The Sale Price = 1062.5

Now you add on the sales tax

Cost with Sales Tax = 1062.50 + 6.5/100 * 1063

Cost with Sales Tax = 1062.50 + 69.06

Cost with Sales Tax = 1131.56 dollars.

7 0
3 years ago
Phoebe is concerned that it the error is not fixed, her pay increase wll be less in future
SSSSS [86.1K]

The difference in the pay rate of Phoebe in 5 years will be $11850

<h3>How to calculate the pay? </h3>

Your information is incomplete. Therefore, an overview will be given. Let's assume that the pay rate is $20000. When there is a 5% increase, the new pay rate will be:

= $20000 + (5% × $20000)

= $20000 + $1000

= $21000

When there is $0.75 increase per hour, the new pay rate on 5 years will be:

= (0.75 × 43800)

= $32850

The difference will be:

= $32850 - $21000

= $11850

Learn more about pay on:

brainly.com/question/13592880

#SPJ1

3 0
2 years ago
In65 - lnX = 39<br> What does X=?
Hunter-Best [27]

Answer:

<h2>The answer is 7.47</h2>

Step-by-step explanation:

In this problem we are going find the natural logarithmic of the numbers involved and solve for x

ln65-Ln x= 39\\

from tables

<h3> ln 65= 4.17</h3>

4.17-ln x= 39\4.17-39= lnx\\-34.83=lnx\\

taking the exponents of both sides we have

e^-^3^4^.^8^3= x\\x= 7.47

3 0
3 years ago
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