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3 years ago

How to add and subtract polynomials

Mathematics

1 answer:

lara [203]3 years ago

7 0

Answer:

You add polynomials when there are plus signs. You subtract them when there is a minus sign. Remember to only add/subtract like terms within the polynomials.

Step-by-step explanation:

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A certain bridge arch is in the shape of half an ellipse 106 feet wide and 33.9 feet high. At what horizontal distance from the

nata0808 [166]

Answer:

The horizontal distance from the center is 49.3883 feet

Step-by-step explanation:

The equation of an ellipse is equal to:

$\frac{x^2}{a^{2} } +\frac{y^2}{b^{2} } =1$

Where a is the half of the wide, b is the high of the ellipse, x is the horizontal distance from the center and y is the height of the ellipse at that distance.

Then, replacing a by 106/2 and b by 33.9, we get:

$\frac{x^2}{53^{2} } +\frac{y^2}{33.9^{2} } =1\\\frac{x^2}{2809} +\frac{y^2}{1149.21} =1$

Therefore, the horizontal distances from the center of the arch where the height is equal to 12.3 feet is calculated replacing y by 12.3 and solving for x as:

$\frac{x^2}{2809} +\frac{y^2}{1149.21} =1\\\frac{x^2}{2809} +\frac{12.3^2}{1149.21} =1\\\\\frac{x^2}{2809}=1-\frac{12.3^2}{1149.21}\\\\x^{2} =2809(0.8684)\\x=\sqrt{2809(0.8684)}\\x=49.3883$

So, the horizontal distance from the center is 49.3883 feet

8 0

4 years ago

Which of the following illustrates the Addition Property of Inequalities? If a > b, then a + c > b + c If a < b, then a

timama [110]

Answer:

both of these

Step-by-step explanation:

3 0

3 years ago

A change purse contains an equal number of pennies, nickels, and dimes. The total value of the

Nutka1998 [239]

Answer:

Step-by-step explanation:

If there are "x" of each coin, then the value of the coins will bw (1 + 5 + 10)x, which equals 560 (given).

16x = 560 -->

x = 35

There are 35 of each type of coin

3 0

3 years ago

What are the variables in 3c + 5 + 7s + 2 + x

DaniilM [7]

Answer: C, S, and X

Step-by-step explanation: These are the variables to your equation.

7 0

3 years ago

Read 2 more answers

Can anyone please help me! if solve it I will give 30 points and brainliest.

NeTakaya

The biggest cone that can fit into a cube of side 3cm would have a diameter of 3 and height of 3, therefor if the volume of a cone = πr^2h*1/3, then:
Volume = π*1.5^2*3*1/3
= 2.25π
= 9π/4 cm^3

6 0

3 years ago

How to add and subtract polynomials​

How to add and subtract polynomials