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ivann1987 [24]
3 years ago
14

Can someone help with 23 please

Mathematics
2 answers:
klasskru [66]3 years ago
8 0
3x+4y = 15
4y = -3x + 15
 y = -3x/4 + 15/4
y = (15 -3x)/4

answer is the first one.
1. y = (15 -3x)/4
timama [110]3 years ago
3 0
Subtract 3x from both sides to make it 4y=15-3x. Then isolate y by dividing both sides by 4 to make y= (15-3x)/4 so it would be #1

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A rectangular field is 300 meters long and 250 meters wide. What is the area of the field in square kilometers
lidiya [134]

Answer:

0.075 sq km

Step-by-step explanation:

Given that there is a rectangular field with dimensions of length =300 m and width = 250 m.

We have to calculate area of this rectangle in the units of square kilometres.

Let us convert length and width into km

1000m = 1 km

Hence length = 300/1000= 0.3 km and

width = 250/1000 = 0.25 km.

ARea = length x width = 0.3 x 0.25

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7 0
3 years ago
Solve for v.<br> 6v-7+2(5v+1) = -2(v + 4)
kipiarov [429]

Answer:

v = -1/6

Step-by-step explanation:

Combine all like terms, getting 18v = -3. Then, divide both sides by 18 to get -3/18, or v = -1/6

Hopefully this helps- let me know if you have any questions!

8 0
3 years ago
Provide an example of an operation that is commutative.Provide an example of an operation which is not commutative
kompoz [17]
Addition is commutative.
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Division is not commutative.
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4 0
3 years ago
What is the radius of a circle if its center is (-3,-2) and one point on the circle is (5,-2)?
Len [333]

Answer:

A

Step-by-step explanation:

The distance from the centre to a point on the circle is the radius.

Calculate radius r using the distance formula

r = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 3, - 2) and (x₂, y₂ ) = (5, - 2)

r = \sqrt{(5+3)^2+(-2+2)^2}

  = \sqrt{8^2+0^2}

  = \sqrt{64} = 8 → A

5 0
3 years ago
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