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ozzi
2 years ago
10

Solve the following linear system of equations using substitution. Y=3x-5 Y=2x-6

Mathematics
2 answers:
Anettt [7]2 years ago
7 0
3x-5=2x-6
Move 2x to the same side as 3x.
3x-2x = x
X-5=-6
add 5 to the -6.
X = 5-6
X=-1
Tanya [424]2 years ago
4 0
Y=3x-5
y=2x-6

Move the X's to the other side on both equations to make equations easier to solve.

-3x+y=-5
-2x+y=-6

Subtract equations.

-x=1
x=-1

y=3x-5

y=3(-1) -5

y=-3-5
y=-8

~Hope I helped!~

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Answer:

(10,27)

Step-by-step explanation:

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8 0
2 years ago
I need help with exercises 3,4, and 6 please show all work and don’t answer number 5 just tell me if it is correct
joja [24]
*If you need me to do #5, DM me!

3. 
The area of a triangle can be given by (just plug and chug as always):
A_t = \frac{1}{2} bh = \frac{1}{2}(3)(4) = 6ft^2
The area of the triangle is 6ft².

4. I will divide into a triangle and a rectangle (because the actual equation for the area of a pentagon requires it to be a perfect pentagon). Let's do the triangle first (height is 3 because you subtract 12 from 15):
A_t = \frac{1}{2} bh = \frac{1}{2}(8)(3) = 12m^2
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Now we just add them:
96+12 = 108m^2

So, the area of that pentagon is 108m².

5. You are actually wrong on this one because the area of a triangle is:
A_t = \frac{1}{2}bh
So, just halve your answer and it will be correct.

6. We can just split it into 4 triangles of equal area and then multiply the area of 1 triangle by 4 to get the total area. Let's do just that:
A_t = \frac{1}{2}bh = \frac{1}{2}(2.5)(5) = 6.25cm^2
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So, the area of the given rhombus is 25cm².
8 0
3 years ago
Help me plz I really appreciate it
mojhsa [17]
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8 0
2 years ago
Read 2 more answers
What is the volume of a rectangular prism 8 inches long, 3 inches wide,and 5 inches high?
Nitella [24]

Answer:

V=whl=3·5·8=120

Step-by-step explanation:

Just use l x w x h and there you go.

3 0
2 years ago
What is the greatest common factor of 48 and 84? A.8 B.12 C.4 D.24
LiRa [457]
48 = 2*2*2*2*3
84 = 2*2*3*7

Looking for common factors we get the GCF to be 2*2*3 = 12

Its B
7 0
3 years ago
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