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m_a_m_a [10]
4 years ago
15

How do you solve this using substitution? -x+y=1 x+y=-1

Mathematics
1 answer:
Alexeev081 [22]4 years ago
4 0
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form: (-1,0)
Equation form: x=-1,y=0
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To the nearest tenth, find the perimeter of ∆ABC with vertices A(2,4), B(-2,1) and C(2,1).
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If you plot the triangle on a graph, you'll see that the shape is a right triangle. Using the distance formula we can calculate the distance between point A and point B, which is the hypotenuse. 

√<span><span><span>(<span>2− (−2)</span>)^</span>2 </span>+ <span><span>(<span>4−1</span>)^</span>2
</span></span>√<span><span><span>(<span>2+2</span>)^</span>2 </span>+ <span><span>(<span>4−1</span>)^</span>2
</span></span>√<span><span><span>(4)^</span>2 </span>+ <span><span>(3)^</span>2
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</span>= 5

5 + 6 + 8 = 19. The perimeter of triangle ABC is 19 units. Hope this helps:)

~Ash</span>
3 0
3 years ago
Big​ food, drug, and discount​ retailers, such as​ safeway, walgreens, and​ target, buy various types of candy bars by the truck
Brums [2.3K]
The matching function is what the example situation needs to perform to channel intermediaries in contributing values. In addition, the method is used to "match" the unmatched factors to its designated type. The Cobb-Douglas' equation is commonly used in describing the matching function.
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3 years ago
What is the exact value? (Picture provided)
creativ13 [48]

Answer:

b.  (√15)/4

Step-by-step explanation:

Since Sin Ф = (opposite side)/Hypotenuse, we have 2 sides of a right triangle.  

Use Pythagorean theorem to solve for the missing leg (the adjacent side)

 1² + b² = 4²

    1 + b² = 16

            b² = 15

                 b = √15

So the adjacent side is √15, so Cos Ф = (√15)/4

6 0
3 years ago
Read 2 more answers
Which absolute value function defines this graph?
lorasvet [3.4K]

Answer:

A. f(x) = -4|x + 2| + 3

Step-by-step explanation:

An absolute value graph is a v-shaped graph whose equation has the form y = a| x - h| + k where (h,k) is the vertex. On the graph the vertex is (-2,3). This means its equation is y = a| x --2| + 3. It simplifies to y = a|x+2|+3. To find a, look at the answer options. Each option has 4 or -4. Since the graph faces downward, it has a negative leading coefficient of a = -4. The equation is y = -4|x+2|+3

7 0
3 years ago
Benford’s law states that the probability that a number in a set has a given leading digit, d, is
Fiesta28 [93]

Answer:

Benford’s law states that the probability that a number in a set has a given leading digit, d, is

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The division property of logarithm should be use to make it as a single logarithm  

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P(1) = 0.301

Step-by-step explanation:

3 0
3 years ago
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