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Evgen [1.6K]
3 years ago
11

Which digits repeat in the decimal number 28.1543

Mathematics
1 answer:
juin [17]3 years ago
4 0

the 43 repeats because the bar is over those two numbers only :)

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7x - y = - 1 + -7x + 3y = - 25
Fittoniya [83]
Hope this helps you out :D

It’s 2 equations so in order to solve the previous system, you can use different methods, as for example substitution or addition of equations. In this case, you use the second one, due to the fact you have 7x in one equation and -7x in the other equation. In this way you can easily eliminate variable x and then solve for y. With the value of y you can replace in any of the two equations and solve for x.

7x-y=-1
-7x+3y=-25

Summarizing, you proceed as follow:
- add up the given equations

7x - y = -1

-7x+3y=-25
——————
0 +2y=-26

- solve for y in the previous equation

2y=-26
y=-26/2
y=-13


- replace the obtained value of y in one of the given equations, and solve for x

7x-(-13)=-1

7x+13=-1

7x=-1-13

7x=-14

x=-14

x=-14/7

x=-2


Hence, the solution of the given systems of equation is:

X=-2

Y=-13

4 0
3 years ago
1. Express the ratio in three<br> different ways (grey to white.)
ad-work [718]
Answer: 2/3, 2:3, and 2 to 3

Explanation: there are three different ways to write ratios - using fractions, semi colons, and the word “to”
5 0
3 years ago
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The hanger image below represents a balanced equation.
Savatey [412]

Answer:

The answer is 1/5 + z = 3/5

Step-by-step explanation:

6 0
3 years ago
I cant find the height to the area!!! THE SHAPE IS A TRIANGLE
Igoryamba

Answer:

x = 7.3

Step-by-step explanation:

area = base × height / 2

21.9 = 6 × x / 2

43.8 = 6x

x = 7.3

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And electrician has the following links of cable 25 inches 47 inches and 8 feet how much cable does he have and feet
vlabodo [156]

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The electrician has 14 feet of cable.

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