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Vadim26 [7]
3 years ago
11

-4x - 10y = 2 -6x - 10y = -12

Mathematics
1 answer:
valentinak56 [21]3 years ago
5 0

Answer: (x,y) = (7,-3)

Step-by-step explanation:

-4x - 10y = 2.........(1)

-6x - 10y = -12.........(2)

Subtract (2) from (1)

-4x — (-6x) -10y — (-10y) = 2 — (-12)

-4x + 6x + 0 = 2 + 12

2x = 14

x = 14/2

x = 7.

Substitute 7 for x in (1)

-4(7) - 10y = 2

-28 — 10y = 2

-10y = 2 + 28

-10y = 30

y = 30/-10

y = -3.

(x,y) = (7,-3)

Hope this helps?

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The volume of a pyramid is 50 3 . What is the volume of a prism that has a congruent base and is the same height as the pyramid?
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Answer:

150 mm^3

Step-by-step explanation:

The formula of a pyramid is

V=1/3(Bh)

The formula for a rectangle is

V=(Bh)

They both have the same Bh, so because the formula of a pyramid states that it's 1/3 of Bh, and 1/3 of Bh = 50, the volume of a whole Bh is 150mm^3.

Hope this makes sense

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3 years ago
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Answer: 2.4 as a decimal or 12/5 in fraction form

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Which variable is the easiest to turn in to opposites? Why? <br> 2x + 4y = 5<br> 3x - 5y = 6
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4 years ago
PLS ANSWER
avanturin [10]

The set of points that represents a function is given by:

A {(2, 1), (7, 9), (3, 12), (4, 10)}.

<h3>When does a relation represents a function?</h3>

A set, or a relation, represents a function when <u>each value of x is mapped to only one value of y</u>.

In this problem, we have that option A represents a function, as:

  • In option B, x = 2 and x = -2 are mapped to two values.
  • In option C, x = 4 is mapped to four values.
  • In option D, both x = 1 and x = 2 are mapped to two values.

Hence the set of points that represents a function is given by:

A {(2, 1), (7, 9), (3, 12), (4, 10)}.

More can be learned about relations and functions at brainly.com/question/12463448

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8 0
2 years ago
Please help.
yan [13]
131 3/4 ⇒ 115 5/8 ⇒ 5 2/3

Subtract 131 3/4 by 115 5/8.

131 3/4 ⇒ 131 6/8
131 6/8 - 115 5/8 = 16 1/8

Now add 16 1/8 + 5 2/3 and this will give you how much weight she lost in all.

16 1/8 ⇒ 16 3/24
5 2/3 ⇒ 5 16/24
16 3/24 + 5 16/24 = 21 19/24

Felice lost 21 19/24 pounds in all.
4 0
3 years ago
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