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puteri [66]
1 year ago
12

Look at picture .. pls !!

Mathematics
1 answer:
sveticcg [70]1 year ago
5 0

Answer:

A

Step-by-step explanation:

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Elimination Method 7x=3y+45 4x+5y=19 (Show it step by step please!)
Fittoniya [83]

\left\{\begin{array}{ccc}7x=3y+45&|\text{subtract 3y from both sides}\\4x+5y=19\end{array}\right\\\left\{\begin{array}{ccc}7x-3y=45&|\text{multiply both sides by 5}\\4x+5y=19&|\text{multiply both sides by 3}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}35x-15y=225\\12x+15y=57\end{array}\right}\qquad|\text{add both sides of the equations}\\.\qquad47x=282\qquad\text{divide both sides by 47}\\.\qquad \boxed{x=6}\\\\\text{Put the value of x to the second equation}

4(6)+5y=19\\\\24+5y=19\qquad\text{subtract 24 from both sides}\\\\5y=-5\qquad\text{divide both sides by 5}\\\\\boxed{y=-1}\\\\Answer:\ \boxed{x=6\ and\ y=-1}

8 0
3 years ago
Show work for 1.6 > 1.3
Brrunno [24]
1.6 is let's say one pie and 6/10 of a pie and that's how much a baker made which is obviously more that 1 pie and 3/10 of a pie that the baker made. A process for that is 1.6 =1 6/10 = 16/10 and if u cross multiply that by 1.3 = 1 3/10= 13/10 the value in the 16/10 side will be 160 which is more that the value on the 13/10 side which is 130
6 0
2 years ago
Which equation represents seven times a number decreased by 2 is 19? A)   7 + x -­ 2 = 19 B)   7x + 2 = 19 C)   2x - ­ 7 = 19 D)
Helen [10]

Answer:

7n - 2 = 19

Step-by-step explanation:

7 times a number is 7n.

7 times a number, decreased by 2, is 7n - 2.

7 times a number, decreased by 2, is 19  is represented by 7n - 2 = 19

4 0
3 years ago
What is a radius in geometry, and what are some examples of it?
mixer [17]
A radius is a straight line from the centre to the edge of a circle. i’m not sure about any examples sorry :/
6 0
2 years ago
7m-17=60 solve one and two step equation
lord [1]

Answer:

11

Step-by-step explanation:

Hope it helps you :)

5 0
2 years ago
Read 2 more answers
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