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2 years ago

What is the formula for elimintation

Mathematics

2 answers:

bekas [8.4K]2 years ago

8 0

Answer:

You can add the same value to each side of an equation. So if you have a system: x – 6 = −6 and x + y = 8, you can add x + y to the left side of the first equation and add 8 to the right side of the equation.

Step-by-step explanation:

inysia [295]2 years ago

3 0

Answer:

The elimination method for solving systems of linear equations uses the addition property of equality. You can add the same value to each side of an equation. So if you have a system: x – 6 = −6 and x + y = 8, you can add x + y to the left side of the first equation and add 8 to the right side of the equation.

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The angle of elevation to the top of a skyscraper is measured to be 2 degrees from a point on the ground 1 mile from the buildin

Alex

Answer:

0.034921 miles or 1843774 feet tall

Step-by-step explanation:

Using trigonometric functions we know that $x=rcos(\theta)$ and $y=rsin(\theta)$ where $\theta$ =angle and r is the hypotenuse of the triangle.

First we will calculate the hypotenuse using the x equation, since we know x = 1 mile (distance from the building on the ground) we have:

$x=rcos(\theta)\\\\1=rcos(2)\\\\r=\frac{1}{cos(2)} \approx. 1.0061mi$

Now we will calculate the height of the building using the y equation and so:

$y=rsin(\theta)\\\\y=\frac{1}{cos(2)} \times sin(2) = \frac{sin(2)}{cos(2)}=tan(2)=0.034921mi$

The building is 0.034921 miles or approximately 184.3774 feet tall.

4 0

2 years ago

Volume of composite figures

Feliz [49]

<u>✍️</u><u>Answer:</u>

The volume of the figure is 381 cubic in

$v=L*W*H$

$v=(16)(7)(3)+1/2(3)(5)(6)$

$v=336+45$

$v=381 in^3$

✮✮✮✮✮✮✮✮✮

<u>hope it helps...</u>

<u>have a great day!!</u>

7 0

2 years ago

Find the perimeter of the following triangle. Round your answer to the nearest hundredth.

vladimir2022 [97]

Step-by-step explanation:

step 1. The perimeter (P) is the length around the triangle.

step 2. P = 6 + 5 + L (the length of the hypotenuse)

step 3. L = sqrt(6^2 + 5^2) = sqrt(61) where sqrt is the square root

step 4. P = 11 + sqrt(61) = 18.81.

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2 years ago

Which equation represents the graph below?

tamaranim1 [39]

I am fairly certain it is C

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2 years ago

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The number of walls, w, that Joe can paint in t hours is given by the equation w=32t−1. Answer the questions below.

klio [65]

We have been given an equation $w=\frac{3}{2}t-1$ that represents umber of walls, w, that Joe can paint in t hours. We are asked to find the number of hours it will take Joe yo paint 7 walls.