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3 years ago

Plz tell me which one is it

Mathematics

2 answers:

agasfer [191]3 years ago

7 0

Answer:

Step-by-step explanation:

svet-max [94.6K]3 years ago

4 0

The answer is D , sorry if it’s not

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The sigh of the product of two integers with the same sign is positive. What is the sigh of the product of three integers with t

tatyana61 [14]

Answer:

There are two possibilities

a) If the integers are positives the product will be positive.

b) If the integers are negatives the product will be negative.

Step-by-step explanation:

We need to use rule of signs to explain the answers

for answer "a"

We have (+)(+)( + ) equals positive

for answer "b"

We have (-)(-) = + then this multiply by the last integer which has negative sign

(+)(-) = -

6 0

4 years ago

One lap around the school is 5/8 mile. Carin ran 3 1/2 laps. How far did she run.

Stells [14]

Use the distance of 1 lap to multiply the number of laps ran

3 0

3 years ago

What is the equation of the line that passes through the given points in slope intercepterpt form? (-2,3) and(3,-4)

Basile [38]

Answer:

Step-by-step explanation:

( - 2 , 3 )

( 3 , - 4 )

m = $\frac{-4-3}{3-(-2)}$ = - $\frac{7}{5}$

y - 3 = - $\frac{7}{5}$ ( x - ( - 2 ) )

y = - $\frac{7}{5}$ x - $\frac{14}{5}$ + 3

y = - $\frac{7}{5}$ x + $\frac{1}{5}$

3 0

3 years ago

Describe the motion of a car with an acceleration of –2 m/s2.

AURORKA [14]

I'm not sure exactly about the squared part but that would be going backwards with a rate of -2 m/s.

7 0

4 years ago

Figure ABCD is parallelogram with point A (-3,2) what rule would rotate the figure 90 counterclockwise

Mazyrski [523]

<h3>Answer:</h3>

(x, y) ⇒ (-y, x)

<h3>Explanation:</h3>

A point at y=1 on the y-axis will rotate to the point x = -1 on the x-axis when it is rotated 90° CCW about the origin. Hence the value of x for the image point is the opposite of the y-value of the original point.

A point at x=1 on the x-axis will rotate to the point y=1 on the y-axis when it is rotated 90° CCW about the origin. Hence the value of y for the image point is the x-value of the original point.

In summary, ...

... (x, y) ⇒ (-y, x)

_____

<em>Comment on rotation matrices</em>

The rotation matrix for rotatation through the angle θ CCW about the origin is ...

$\left[\begin{array}{cc}\cos{(\theta)}&-\sin{(\theta)}\\\sin{(\theta)}&\cos{(\theta)}\end{array}\right]$

When θ = 90°, this matrix becomes ...

$\left[\begin{array}{cc}0&-1\\1&0\end{array}\right]$

and multiplication by coordinates (x, y) gives ...

$\left[\begin{array}{cc}0&-1\\1&0\end{array}\right]\times\left[\begin{array}{c}x\\y\end{array}\right] = \left[\begin{array}{c}-y\\x\end{array}\right]$

7 0

4 years ago