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sineoko [7]
2 years ago
14

Solve the system of equations by adding them together term by term to eliminate one variable:

Mathematics
1 answer:
Ber [7]2 years ago
3 0
It is 4 pennies and 20 quaters
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2. Any angle with these properties (i. E is center, AE and AB are radii) is called a central angle.

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4. An important property of these angles is that the measure of the arc AB = m(AEB)

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3 years ago
What do you multiply to get 8 and add to get 4
nasty-shy [4]

Hi Mitchell

-1*8+12

(-1*8)+12

-8+12=4

I hope that's help :0

3 0
3 years ago
Skill in adding and subtracting decimals is useful for calculating ______ .
Sholpan [36]

Answer:

<u>the amount saved in buying a pair of $32.95 blue jeans on sale for $26.50</u>

Step-by-step explanation:

all are pretty good answers but that one is most reasonable

have a nice day :)

7 0
2 years ago
Read 2 more answers
Answer please I’m dying from math
charle [14.2K]

Answer:

\huge\boxed{\text{D)} \  15x^4 + 2x^3 - 8x^2 - 22x - 15}

Step-by-step explanation:

We can solve this multiplication of polynomials by understanding how to multiply these large terms.

To multiply two polynomials together, we must multiply each term by each term in the other polynomial. Each term should be multiplied by another one until it's multiplied by all of the terms in the other expression.

  • <em>We can do this by focusing on one term in the first polynomial and multiplying it by </em><em>all the terms</em><em> in the second polynomial. We'd then repeat this for the remaining terms in the second polynomial.</em>

Let's first start by multiplying the first term of the first polynomial, 3x^2, by all of the terms in the second polynomial. (5x^2+4x+5)

  • 3x^2 \cdot  5x^2 = 15x^4
  • 3x^2 \cdot 4x = 12x^3
  • 3x^2 \cdot 5 = 15x^2

Now, we can add up all these expressions to get the first part of our polynomial. Ordering by exponent, our expression is now

  • \displaystyle 15x^4 + 12x^3 + 15x^2

Now let's do the same with the second term (-2x) and the third term (-3).

  • -2x \cdot 5x^2 = -10x^3  
  • -2x \cdot 4x = -8x^2
  • -2x \cdot 5 = -10x
  • Adding on to our original expression: \displaystyle 15x^4 + 12x^3 - 10x^3 + 15x^2 - 8x^2 - 10x

  • -3 \cdot 5x^2 = -15x^2
  • -3 \cdot 4x = -12x
  • -3 \cdot 5 = -15
  • Adding on to our original expression: \displaystyle 15x^4 + 12x^3 - 10x^3 + 15x^2 - 8x^2 - 15x^2 - 10x - 12x - 15

Phew, that's one big polynomial! We can simplify it by combining like terms. We can combine terms that share the same exponent and combine them via their coefficients.

  • 12x^3 - 10x^3 = 2x^3
  • 15x^2 - 8x^2 - 15x^2 = -8x^2
  • -10x - 12x = -22x

This simplifies our expression down to 15x^4 + 2x^3 - 8x^2 - 22x - 15.

Hope this helped!

7 0
2 years ago
Read 2 more answers
Help me with number one and number six before answering say which number you are answering please help me and thank you.
Ksenya-84 [330]
1) 3 times 15 is 45
6) because in order for it to even have a slope it has to be constant through out the whole thing.
5 0
3 years ago
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