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Alchen [17]
3 years ago
13

Counterexample for: The sum of a negative and a positive number is always negative

Mathematics
1 answer:
vredina [299]3 years ago
4 0

Answer:

The sum of a negative and a negative is always a positive

Step-by-step explanation:

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Write a slope-intercept equation for a line passing through the point (5,-5) that is parallel to the line x = -2. Then write a s
Gnesinka [82]

Answer:

1. y=-2x+5

2. y=1/2x-7.5

Step-by-step explanation:

you plug in the cordinates for the y intercept and you already have the slope.

y=mx+b

m= slope which is -2

6 0
3 years ago
The difference of p and 4
Iteru [2.4K]
  • Difference Means subtraction

p-4

Or

4-p

  • There is a unlike term [p] and 4.So we can't subtract.
  • We can only subtract when there is p and 4p(4p-p).Answer would be 3 p.
5 0
2 years ago
Find the value of x
avanturin [10]

Answer:

Step-by-step explanation:

1. 56 + 81 = 137

2. The exterior angle theorem means that the 2 angles within a triangle that is on the opposite side of the angle outside the triangle could be added to find the angle that is outside of the triangle.

3. 56 and 81 are on the opposite side of the "x" outside the triangle which means that they could be added together which equals 137 degrees.

Hope this helps!

3 0
3 years ago
Read 2 more answers
AB = 10 and AC = 2 StartRoot 10 EndRoot. What is the perimeter of △ABC?
WITCHER [35]

Answer:

20 + 2 units

Step-by-step explanation:

because the perimeter of ∆ ABC is the answer 20 + 2

4 0
2 years ago
Emily wants to know the volume of a beach ball. She deduces that the beach ball has diameter of 12 inches, and then uses the fol
Over [174]

Answer:

D. She used the beach's ball's diameter when she should have used the radius

Step-by-step explanation:

To find the volume of the beach ball, using the volume of a sphere is the right formula to use, which is ⁴/3πr³.

The formula she used is correct.

Since the diameter of the ball is assumed to be 12 inches, what is needed to find the volume is the radius.

Radius (r) = ½(diameter) = ½(12) = 6 in.

This is where Emily made a mistake.

She used the diameter of the beach ball instead of its radius (r) which is needed in the equation.

She should have gotten,

V = ⁴/3(3.14)(6)² = 904.32 cubic inches

7 0
3 years ago
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