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3 years ago

Look at the following numbers:

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

8 0

Answer:

It is 5,-5

Step-by-step explanation:

when you have two numbers that are the same, but one is a negative, the sum will be zero. In this case you can read it as 5-5=0

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What is 13/2 - 2/13.

skad [1K]

13/2 = 6.5
2/13 = 015
6.5-0.15 = 6.35

4 0

3 years ago

Which equation would you use to find how high the bird is flying?

damaskus [11]

Answer:

The first one

Step-by-step explanation:

An easy way is SOH CAH TOA

SOH is that you use sine if you there is the opposite (in this case the question mark) and hypotenuse (the diagonal line)

CAH is that you use cosine for the adjacent side (1100) and the hypotenuse.

TOA is using tangent for the opposite and adjacent side.

To fine the question mark, you would use tangent. And plug in the given (1100 for the adjacent). So tan45 = x/1100.

If you need more help or clarification, let me know!

6 0

4 years ago

I need help please in the number 2

ANEK [815]

2x3=6
3x2=6
6 divided by 2=3
6 divided by 3=2

7 0

4 years ago

Given that the quadratic equation has equal roots (k^2-1)x^2-2kx-3k-1=0

Alik [6]

Answer:

(See explanation for further details)

Step-by-step explanation:

The real expression is:

$(k^{2}-1)\cdot x{{2} - 2\cdot k \cdot x - 3\cdot k + 1 = 0$

The general equation for the second-order polynomial is:

$x = \frac{2\cdot k \pm \sqrt{4\cdot k^{2}-4\cdot (k^{2}-1)\cdot (-3\cdot k + 1)}}{k^{2}-1}$

This condition must be observed for the case of a quadratic equation with equal roots:

$4\cdot k^{2} - 4\cdot (k^{2}-1)\cdot (-3\cdot k + 1) = 0$

$k^{2} + (k^{2}-1)\cdot (3\cdot k + 1) = 0$

$k^{2} + 3\cdot k^{3} - 3\cdot k - k^{2}-1 = 0$

$3\cdot k^{3} - 3\cdot k - 1 = 0$

7 0

4 years ago

Anna started reading at 4:00 pm and finished at 4:20 pm. How many degrees did the minute hand turn?

klasskru [66]

The minute hand moved 315 degrees.

3 0

3 years ago