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4 years ago

PLEASE HELP I NEED TO PASS THIS CLASSS!!!!!!!!!!

Mathematics

1 answer:

Nuetrik [128]4 years ago

5 0

Answer:

1, 2, 4

Step-by-step explanation:

The triangles are similar by AAA or SSS (yes)

The sides are proportional (yes)

The length of AB is 21, not 15 (no)

The length of BC is 9 (yes)

The dilation is an enlargement, not reduction (no)

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Plz help i need this soon

wlad13 [49]

Answer:

b= (m)(-150)

Step-by-step explanation:

1800-1350 = 450

450/3 = 150

b= m*-150

7 0

3 years ago

3 Select all the equations that the number 7 will make true. (1 Point) <br>

Nastasia [14]

3+4

that is one of em but you did not provide me with an image so i cant really answer but give u a simple equation like that one on top.

4 0

3 years ago

Is -8 an irrational number?<br> yes or no

kherson [118]

no bc it is not no no no no no no no

3 0

3 years ago

Find a vector 3 units long in the opposite direction from v = 〈3, 1,-4).

lutik1710 [3]

Unit vector along the direction v = <3,1,-4> is :

$\hat{v} = \dfrac{3i + j -4k}{\sqrt{3^2 + 1^2 + 4^2}}\\\\\hat{v} = \dfrac{3i + j -4k}{5.1}$

So, unit vector opposing the $\hat{v}$ is :

$\hat{v'} = -\hat{v}\\\\\hat{v'} = -( \dfrac{3i + j -4k}{5.1})\\\\\hat{v'} = \dfrac{-3i - j +4k}{5.1}$

so, vector of magnitude 3 units in opposite direction from v is :

$\vec{V} = 3\hat{v'}\\\\\vec{V} = \dfrac{3}{5.1}( -3i -j+4k)$

Hence, this is the required solution.

5 0

3 years ago

NEED HELP GIVING BRAINLIEST

Pie

For this case we have by definition, that the equation of a line in the slope-intersection form is given by:

$y = mx + b$

Where:

m: It's the slope

b: It is the cutoff point with the y axis

We need two points through which the line passes to find the slope:

$(0, -4)\\(1,0)$

We found the slope:

$m = \frac {y2-y1} {x2-x1}\\m = \frac {0 - (- 4)} {1-0} = \frac {4} {1} = 4$

So, the equation is of the form:

$y = 4x + b$

We substitute a point to find "b":

$-4 = 4 (0) + b\\-4 = b$

Finally, the equation is:

$y = 4x-4$

Answer:

Option D

4 0

3 years ago