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Alexandra [31]
3 years ago
13

Solving by substitution -3x-3y=3 and y=-5x-17

Mathematics
1 answer:
Blizzard [7]3 years ago
8 0
-3x - 3 (5x - 17) = 3
-3x - 15x + 51 = 3. combine like terms
-18 x + 51 - 51 = 3 - 51
-18x = -48 divide by -18
x = 3
put 3 in for x
-3 (3) -3y = 3 multiply
-9 +9 - 3y = 3 + 9 combine like terms
-3y = 12 divide by -3
y = -4
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I’d like to know how to solve this problem.
sergiy2304 [10]
Can you show the problem? Those are the questions but I need the actual graph.
6 0
3 years ago
Segment BD is an altitude of triangle ABC. Find the area of the triangle. Triangle ABC with altitude BD is shown. Point A is at
pogonyaev
Where's the "triangle with alt. BD?"  This problem can be solved without the diagram, but the solution would be easier with it.

BD is the altitude.  Find the length of BD by finding the dist. between (-1,4) and (2,4); it is 2-(-1), or 3.  |BD| = 3.

I've graphed the triangle myself and have found that the "base" of the triangle is the vertical line thru (2,1) and (2,6); its length is 6-1, or 5.

Thus, the area of this triangle is  A = (b)(h) / 2, or  A = (5)(3) / 2 = 10/3 square inches.
7 0
3 years ago
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Use the arc length formula and the given information to find r. Show your work for full credit. s = 8.1 ft θ = (3.14/3)rad r = ?
VladimirAG [237]
This question is simple I'm a little confused on the specifics so I will try my best to help.

s=θ(r)
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4 0
3 years ago
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When an object is dropped from a building (height 1450 feet )
Law Incorporation [45]

Given

h=P(t)=-16t^2+1450

Evaluate P(5), as shown below

\begin{gathered} P(5)=-16*5^2+1450 \\ \Rightarrow P(5)=-400+1450=1050 \end{gathered}

Therefore, the answer is 1050ft.

7 0
1 year ago
WILL GIVE BRAINLIEST
In-s [12.5K]

Answer:

C. 3⁶

Step-by-step explanation:

Exponents with the same base follow this exponential rule for division:

  • xᵃ/xᵇ = xᵃ⁻ᵇ

When the bases are the same, we can subtract the exponents.

The bases are the same in this problem: 3. Therefore, we can subtract the exponents from each other:

  • 3⁸/3²
  • 3⁸⁻²
  • 3⁶

The final and correct answer is C. 3⁶.

8 0
2 years ago
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