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DerKrebs [107]
3 years ago
7

Explain why the equation 5x-7=7 has only one solution? NEED ASAP

Mathematics
1 answer:
kotykmax [81]3 years ago
8 0
The answer for this is 2.8
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Use a net to find the surface area of the prism.
lawyer [7]
The surface area of the prism will be given by:
SA=2(L×W)+2(L×H)+2(H×W)
SA=2(12×5)+2(12×9)+2(5×9)
SA=120+216+90
SA=426m²

Answer: 426m²
5 0
3 years ago
Alice wants to put wall-to-wall carpeting in a small room with the floor plan shown.
AURORKA [14]
I found the complete problem. 

If Alice divides it into two trapezoids, the area formula would be: A = [(a+b) / 2] * h 
Trapezoid 1
A = [(7.5 + 15)/2 * 5
A = (22.5/2) * 5 
A = 11.25 * 5 
A = 56.25 sq. ft

Trapezoid 2
A = [(5 + 10)/2 * 7.5
A = (15/2) * 7.5
A = 7.5 * 7.5 
A = 56.25 sq. ft

Total area = 56.25 + 56.25 = 112.50 sq. ft.

3 0
3 years ago
How to do this! Completely lost!!
Korvikt [17]
The solution is 3, -9
x = 3, y = -9




4 0
3 years ago
Whats 5 plusssssssssss 7 (yw)
Tresset [83]

Answer:

12

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
]. six pears and three apples cost $3.90. two pears and five apples cost $3.30. how much does one pear cost
Ilya [14]
Write the equation of the cost
p stands for the cost per pear, a stands for the cost per apple
6p + 3a = 3.9
2p + 5a = 3.3

Solve the equation system
To solve the equation system, we work on eliminating variable p so we will find the number of a. To eliminate, we have to change the coefficient of p to the same number (i will change it to coefficient 6)
6p + 3a = 3.9 (multiply 1)
2p + 5a = 3.3 (multiply 3)
---------------------------------
6p + 3a = 3.9
6p + 15a = 9.9
-------------------- - (substract)
      -12a = -6
           a = -6/-12
           a = 0.5

To find the cost per pear, subtitute the number of a to one of the equation
2p + 5a = 3.3
2p + 5(0.5) = 3.3
2p + 2.5 = 3.3
2p = 3.3 - 2.5
2p = 0.8
p = 0.4

The cost of one pear is $0.4
6 0
3 years ago
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