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3 years ago

Evaluate the following expression for x=2 and y=1 3x+8y+10

Mathematics

1 answer:

natita [175]3 years ago

6 0

Answer:

Step-by-step explanation:

$3(2) + 8(1) + 10$
$6 + 8 + 10$
$14 + 10$
$24$

Therefore, the answer is 24.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

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A 12 ft long playground is marked off into 1/5 ft long section for a game,how many sections are there

Mrac [35]

So its 12 divided by 1/5 so
12 x 1= 12
1 x 5= 5

That is 12 over 5 and u will divide the numerator by the denominator to get 2.4
Dont know if thts exactly right bcuz its been a while since i learned this but i hope it helps

4 0

3 years ago

f. If a salesperson receives a commission of 12% of sales, what is the salesperson's commission on $250,000 of sales?

Gala2k [10]

Answer:

30,000

Step-by-step explanation:

250,000 * .12 = 30,000

in real life the commission would be split between the owner, broker and salesperson

salespeople often do not keep the entire commission

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2 years ago

5. Which polynomial is equal to (x5 + 1) divided by (x + 1)?

Mkey [24]

Answer:

B $x^4-x^3+x^2-x+1$

Step-by-step explanation:

Given,

Dividend = $(x^5+1)$

Divisor = $(x+1)$

Step 1: First The dividend is $(x^5+1)$ and Divisor is $(x+1)$ when divided first time the quotient will be $x^4$ and remainder will be $-x^4+1$

Step: 2 Now the new dividend is $-x^4+1$ and Divisor is $(x+1)$ when divided the quotient will be $x^4-x^3$ and remainder will be $x^3+1$

Step: 3 Now the new dividend is $x^3+1$ and Divisor is $(x+1)$ when divided the quotient will be $x^4-x^3+x^2$ and remainder will be $-x^2+1$

Step: 4 Now the new dividend is $-x^2+1$ and Divisor is $(x+1)$ when divided the quotient will be $x^4-x^3+x^2-x$ and remainder will be $x+1$

Step: 5 Now the new dividend is $x+1$ and Divisor is $(x+1)$ when divided the quotient will be $x^4-x^3+x^2-x+1$ and remainder will be 0.

Hence When the polynomial $(x^5+1)$ is divided by $(x+1)$ the answer or quotient will be equal to $x^4-x^3+x^2-x+1$ and remainder will be 0.

5 0

3 years ago

Account A and Account B both have a principal of $1,000 and an annual interest rate of 4%. No additional deposits or withdrawals

postnew [5]

Account A
Total-$1800
Interest-$800

Account B-
Total-$2191.12
Interest-$1191.12

Account B by $391.12

4 0

3 years ago

Show that ifAB=IandAC=I, then it follows that B=C. Explain how this proves thatthe inverse of the matrix A is unique.

Anna007 [38]

Answer with Step-by-step explanation:

Suppose that a matrix has two inverses B and C

It is given that AB=I and AC=I

We have to prove that Inverse of matrix is unique

It means B=C

We know that

B=BI where I is identity matrix of any order in which number of rows is equal to number of columns of matrix B.

B=B(AC)

B=(BA)C

Using associative property of matrix

A (BC)=(AB)C

B=IC

Using BA=I

We know that C=IC

Therefore, B=C

Hence, Matrix A has unique inverse .

6 0

3 years ago