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natta225 [31]
2 years ago
7

Im doing an extra credit assignment and I need someone to help me solve by substitution method

Mathematics
1 answer:
AnnyKZ [126]2 years ago
6 0

Answer:

(-2,1)

Step-by-step explanation:

that is where the two graphs intersect

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X+78=3x-2 <br> ..................
photoshop1234 [79]

Answer:

x=40

Step-by-step explanation:

x+78=3x-2\\\mathrm{Subtract\:}78\mathrm{\:from\:both\:sides}\\x+78-78=3x-2-78\\x=3x-80\\\mathrm{Subtract\:}3x\mathrm{\:from\:both\:sides}\\x-3x=3x-80-3x\\\\

-2x=-80\\\frac{-2x}{-2}=\frac{-80}{-2}\\x=40

6 0
3 years ago
The sum of t and 2 is equal to 5 less than t
Alex17521 [72]
The sum (addition) of t and 2 is equal to (=) 5 less than (subtraction) t

2 + t = t - 5  
7 0
3 years ago
Read 2 more answers
What is the next number on sequence 2 7 8 3 12 9
Kamila [148]
The term of this sequence is: 
<span>-(17/30)n^5+(113/12)n^4-(173/3)n^3+(1915/12)n^2-(5813/30)n+85 </span>
<span>Therefore,term number 7 is:-146/1=-146 </span>
8 0
3 years ago
DUE IN 27 minutes PLEASE HELP EASYY
trapecia [35]

Answer:

6 + 0 = 0 + 6 = 6

12 X (3 X 9)

2 + 6x

3 + 7 + 8 = 7 + __ + 3

27 - 108

-15 - 5m

(6 + 5) + 1

8x + 28

26 X 1 = 1 X 26 = 26

24 + 4s

Step-by-step explanation:

i hope this helps :))

7 0
3 years ago
Gabriel wants to paint the model. How
enyata [817]

Answer:

<h2>The area of the base is 144 square inches.</h2><h2>The area of each triangular face is 66 square inches.</h2><h2>Grabiel needs 408 square inches of paint.</h2>

Step-by-step explanation:

The complete problem is attached.

Notice that the figure is a square pyramid, where its base dimensions are 12 inches by 12 inches, which represents an area of

B=12 \times 12 = 144 \ in^{2}

The slant height of the pyramid is 11 inches, which allow us to find the area of each triangle face

A=\frac{1}{2}bh =\frac{1}{2}(12)(11)= 66 \ in^{2}

But there are four triangle faces, so A_{faces} =4(66)=264 \ in^{2}.

Therefore, the area of each triangular face is 66 square inches.

So, the total surface area would be the sum

S=144+264=408 \ in^{2}

Therefore, Gabriel needs 408 square inches to paint the whole model.

4 0
3 years ago
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