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faust18 [17]
2 years ago
10

Plzzzzzz help Solve the system by Substitution.

Mathematics
1 answer:
tankabanditka [31]2 years ago
4 0

Answer:

B

Both systems can be sloved by susbituding (1,2)

Step-by-step explanation:

(1)- x−4y=−7

Substitute in the x and y values: 1 - 4 (2) = -7

Multiply the numbers : 1 - 8 = -7

Calculate the difference: -7 = -7

(2) - −x+2y=3

Substitute in the x and y values: -1 + 2 (2) = 3

Multiply the numbers : -1 + 4 = 3

Calculate the sum: 3 = 3

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A small piece of metal weighs 0.77 gram. What is the value of the digit in the tenths place?
Lady_Fox [76]
<span>The value of the digit in the tenths place is 7. The value of the digit in the hundredths place is 7. The first number to the right of the decimal is in the tenths place and the second number to the right is in the hundredths place. The 0 is in the ones place and is the first number to the left of the decimal.</span>
4 0
3 years ago
After a 16% increase the price of a pair of running shoes was $40.60. What was the old price of the shoes
Delvig [45]

Answer:

34.10

Step-by-step explanation:

Note:

16% = .16

Important:

What was the <u>old price</u> of the shoes

Solution:

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5 0
2 years ago
(3x + 4) (x-2) answer
Otrada [13]
3x^2+-8

This answer for (3x+4) (x-2)
7 0
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How many lines of symmetry does a regular octagon have?
Lesechka [4]

Answer:

8

Step-by-step explanation:

  • An Equilateral Triangle (3 sides) has 3 Lines of Symmetry
  • A Regular Pentagon (5 sides) has 5 Lines of Symmetry
  • A Regular Hexagon (6 sides) has 6 Lines of Symmetry
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