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trasher [3.6K]
3 years ago
9

Solve this system using elimination. 3x+4y=5 2x+3y=4 Show work please

Mathematics
1 answer:
inna [77]3 years ago
5 0
3x+4y=5
2x+3y=

-2(3x+4y)=5(-2)
3(2x+3y)=4(3)

-6x-8y=(-10)
6x+9y=12

Add the equations

-6x-8y=(-10)
+ 6x+9y=12
-----------------
0x+y=2
y=2

Substitue y into an equation

6x+9(2)=12
6x+18=12
6x=-6
x = -1
y = 2
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Alex saved x dollars.
steposvetlana [31]
Answer:
Ethan = 1.(3x)

Step-by-step explanation:
Let's split "Ethan saved 1/3 more than that"
That = x
So, Ethan saved 1/3 more than x
Meaning that Ethan = x + 1/3x
Combine like terms
Ethan = 1 1/3x
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Ethan = 1.(3x)

Hope this helps :)
Have a great day


4 0
3 years ago
Describe fully the single transformation that takes shape p onto shape q
Arturiano [62]

Answer:

The single transformation that takes shape 'p' onto shape 'q' is a dilation by a scale factor of 3 with the center point (1, 0)

Step-by-step explanation:

The coordinates of the vertices of shape ΔP are;

A(2, 3), B(2, 1), C(3, 1)

The length AB = 3 - 1 = 2

The length CB = 3 - 2 = 1

∴ The length AC = √(2² + 1²) = √5

The coordinates of the vertices of shape ΔQ are;

A'(4, 9), B'(4, 3), C'(7, 3)

The length A'B' = 9 - 3 = 6

The length C'B' = 7 - 3 = 3

∴ The length A'C' = √(6² + 3²) = √(45) = 3·√5

∴ Figure Q ΔA'B'C' is a dilation of figure P ΔABC by a scale factor of A'B'/AB = 6/2 = 3

The distance of point B(2, 1) from the point (1, 0) = √((2 - 1)² + 1²) = √2

The distance of point B'(4, 3) from the point (1, 0) = √((4 - 1)² + 3²) = 3·√2

Therefore, the distances of points on figure Q from (1, 0) = 3 × the distances of points on figure from (1, 0)

Therefore, figure 'Q' can be obtained from figure 'P' by a dilation of figure 'P' by a scale factor of 3 with the center of dilation at point (1, 0).

5 0
3 years ago
3x + 5y = 23<br><br> y = x + 3
Ratling [72]

Answer:

(1,4)

Step-by-step explanation:

7 0
3 years ago
Find the amount of the discount on a $234 item with a discount of 15%. A. $40.00 B. $23.40 C. $35.10 D. $35.01
Nady [450]
234 * 0.15 = 35.1

Your answer is C. $35.10.
6 0
3 years ago
Read 2 more answers
PLEASE HELP WITH THIS SHORT QUESTION. BEST REASONING WILL GET LOTS OF POINTS AN WILL BE MARKED BRAINIEST!
egoroff_w [7]

Answer:

the numbers closest the the right are the bigger numbers, and the ones to the left are the smaller numbers

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