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Effectus [21]
3 years ago
7

Solve the system using substitution. Show all work. (3 points) y=-2x+6 3y-x+3=0

Mathematics
1 answer:
mihalych1998 [28]3 years ago
7 0
3(-2x + 6) - x + 3 = 0
-6x + 18 - x + 3 = 0
-7x + 18 + 3 = 0
-7x +21 = 0
-7x = -21
-7x/-7 = -21/-7
x = 3
y = -2(3) + 6 
y = -6 + 6
y = 0
x= 3 y = 0
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∠1 and ∠2 are complementary.
kobusy [5.1K]
If two angles are complimentary then their sum would equal to 90 degree.
i.e., x + 3x + 30 = 90
4x = 90 - 30
x = 60 / 4
x = 15

In short, Your Answer would be Option A

Hope this helps!
6 0
3 years ago
Read 2 more answers
Using the distance formula, d = √(x2 - x1)2 + (y2 - y1)2, what is the distance between point (-10, 12) and point (5, 3) rounded
Whitepunk [10]

Answer:

<h3>The answer is 17.5 units</h3>

Step-by-step explanation:

Using the distance formula

<h3>d =  \sqrt{ ({x2 - x1})^{2} +  ({y2 - y1})^{2}  }</h3>

the distance between (-10, 12) and (5, 3) is

<h3>d =  \sqrt{ ({5 + 10})^{2}  +  ({3 - 12})^{2} }</h3><h3>d =  \sqrt{ {15}^{2}  + ( { - 9})^{2} }</h3><h3>d =  \sqrt{225 + 81}</h3><h3>d =  \sqrt{306}</h3><h3>d = 3 \sqrt{34}</h3>

d = 17.492855

We have the final answer as

<h3>d = 17.5 units to the nearest tenth</h3>

Hope this helps you

4 0
3 years ago
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1/2expand the equation 1/2(3+4t-10)=
Ivanshal [37]

\frac{1}{2} (3 + 4t - 10)

\frac{3}{2}  +  \frac{4t}{2}  -  \frac{10}{2}

(\frac{3}{2}  -  \frac{10}{2})  + 2t

\frac{ - 7}{2}  + 2t

- 3.5 + 2t

8 0
3 years ago
Please help me with this I’m stuck and I’ll write a lot of points
d1i1m1o1n [39]

Answer:

b:100'

a:75

b:50

Step-by-step explanation:

5 0
3 years ago
A triangle has side lengths of 19 centimetres, 19 centimetres, and 20 centimetres. Is this triangle equilateral?​
Sedbober [7]

Answer:

no a equilateral triangle has the same length sides all the way around

6 0
3 years ago
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