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3 years ago

How do add negative numbers

2 answers:

8 0

Example:2-(-1)+(-7)=5
It’s always easier if you just add parenthesis so you can see clearly whats happening. Hope you have a good day.

Yakvenalex [24]3 years ago

4 0

well, a negative plus a negative always will be a negative

example:

-1+-1=-2

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What is the slope of the line that passes through the points (-3, -9)(−3,−9) and (22, -4) ?(22,−4)? Write your answer in simples

bezimeni [28]

Answer:

1/5

Step-by-step explanation:

Equation: $\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

Points: (-3, -9) and (22, -4)

$y_{2}$ is the second y point that shows up on the question, basically go by order. So it's -4

$y_{1}$ is -9, because again, in order of which coordinates pop-up first in the question

$x_{2}$ is 22, $x_{1}$ is -3

Now input into the equation, to make it easier we'll split the fraction into 2 equations:

$\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$ = $y_{2} - y_{1}$ and $x_{2} - x_{1}$ , we'll put them back in a fraction later

$y_{2} - y_{1}$ = -4 - (-9) = -4 + 9 = 5

$x_{2} - x_{1}$ = 22 - (-3) = 22 + 3 = 25

now put it in the fraction, remember y on top x on the bottom:

5/25, simplify, 1/5

4 0

3 years ago

HELPPPPPPPP<br><br> In WXY, y=690 cm, w=440 cm and angle X=163°. Find angle W to the nearest degree

Ede4ka [16]

Answer:

The angle W is approximately 7°.

Step-by-step explanation:

Since angle X is adjacent to sides y and w and opposite to side x, we calculate the length of side x by Law of the Cosine:

$x = \sqrt{y^2+w^2-2\cdot y\cdot w \cdot \cos X}$ (1)

Where:

$y, z$ - Side lengths, in centimeters.

$W$ - Angle, in sexagesimal degrees.

If we know that $y = 690\,cm$ , $w = 440\,cm$ and $X = 163^{\circ}$ , then the length of the side x is:

$x = \sqrt{y^2+w^2-2\cdot y\cdot w \cdot \cos X}$

$x\approx 1118.199\,cm$

By Geometry we know that sum of internal angles in a triangle equals 180°. If X is an obtuse, then Y and W are both acute angles. By Law of the Sine we find angle W:

$\frac{x}{\sin X}= \frac{w}{\sin W}$ (2)

$\sin W = \left(\frac{w}{x} \right)\cdot \sin X$

$W = \sin^{-1}\left[\left(\frac{w}{x} \right)\cdot \sin X\right]$

If we know that $X = 163^{\circ}$ , $w = 440\,cm$ and $x\approx 1118.199\,cm$ , then the angle W is:

$W = \sin^{-1}\left[\left(\frac{w}{x} \right)\cdot \sin X\right]$

$W \approx 6.606^{\circ}$

Hence, the angle W is approximately 7°.

3 0

3 years ago

Please Help me with this question!!

kipiarov [429]

Answer:

Third one one

(1 x^8/ 2^2y^5)^3

Step-by-step explanation:

Quotient of power: a^m/a^n = a^(m-n)

[(x^3y^-2) /(2^2x^-5y^3)]^3 = (x^8/ 2^2y^5)^3

So. It's third option

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3 years ago

Rosa enlarged an image on the copy machine. The actual measurement was 3.6 inches by 6 inches. The enlarged version is 6 inches

Nesterboy [21]

The anwser is going to be six 6

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3 years ago

1.4. Frederick works in a grocery store and also mows lawns. He earns $10 per hour a

dmitriy555 [2]

Answer: Im very sure the answer is

Step-by-step explanation:

5 0

3 years ago

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