2 years ago

Conjecture: The difference between two negative numbers is always negative. Write a counterexample. *

Mathematics

1 answer:

Katen [24]2 years ago

4 0

If you add two negative numbers you get a sum that is less than both of the numbers. so -1+-2=-3

You might be interested in

the first term of an arithmetic sequence is 10 and the sum of the first five terms is 250,find the sequence

Crazy boy [7]

Answer:

The sequence is:

10, 30, 50, 70, 90.....................

Step-by-step explanation:

We have,

First term (a) = 10

Common difference (d) = ?

Sum of first 5 terms ( $S_{5}$ ) = 250

or, $\frac{n}{2} [{2a+(n-1)d}] = 250$

or, $\frac{5}{2} [2*10 + 4d]=250$

or, $\frac{5}{2} * 4[5+d]=250$

or, 10(5 + d) =250

or, 5 + d = 25

∴ d = 20

Now,

2nd term = a + d = 10 + 20 = 30

3rd term = a + 2d = 10 + 2*20 = 10 + 40 = 50

4th term = a + 3d = 10 + 3*20 = 10 + 60 = 70

5th term = a + 4d = 10 + 4*20 = 10 + 80 = 90

8 0

2 years ago

A pool in the shape of a rectangular prism is being filled with water. The length and width of the pool is 24 feet and 15 feet.

Zina [86]

478.8u^3 should be the answer

5 0

2 years ago

Identify the terms, coefficients, and constants in the expression 20x+13.

anzhelika [568]

Answer: coeficient is 20 and the constant which is 13

Step-by-step explanation:

6 0

1 year ago

What is the value of the discriminant of 0=-2x^2+6x+13

klemol [59]

D=(b^2)-(4)(a)(c)

36-(4)(-2)(13)= 139

6 0

2 years ago

A sphere has a radius of 9 inches. What is the volume of the sphere in cubic inches in terms of π?

miv72 [106K]

Answer: 3 054 in^2

Step-by-step explanation:

Sphere volume formula = 4/3 pi r^3

So... 4/3 pi 9^3

= 3 053.63 in^2

6 0

2 years ago