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3 years ago

Need help will give brainlest please this practice test makes no sense need explanation

Mathematics

1 answer:

AlexFokin [52]3 years ago

6 0

Answer:

Step-by-step explanation:

Well, I can tell the answer just by looking:

- The shape moved counterclockwise by one quadrant

- The shape got SMALLER

- Rotations go counterclockwise. So that's a 90 degree rotation.

- Shape gets smaller so it's dilated by a number less than 1. Dilate by 1/2

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Write an equation in slope-intercept form for the line that has the given slope and contains the point. Please show some work.(

zavuch27 [327]

Answer:

An equation in the slope-intercept form will be:

$y=\frac{-1}{2}x+0$

Step-by-step explanation:

Given the points

(4,-2)

(2,-1)

Finding the slope between points

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(4,\:-2\right),\:\left(x_2,\:y_2\right)=\left(2,\:-1\right)$

$m=\frac{-1-\left(-2\right)}{2-4}$

$m=-\frac{1}{2}$

We know that the slope-intercept form of the line equation is

$y=mx+b$

where m is the slope and b is the y-intercept.

substituting the values m=-1/2 and the point (4, -2) to determine the y-intercept i.e. 'b'.

$y=mx+b$

$-2=\frac{-1}{2}\left(4\right)+b$

$-2+b=-2$

$b=0$

substituting the values m=-1/2 and b=0 to determine the line equation in slope-intercept form

$y=mx+b$

$y=\frac{-1}{2}x+0$

Thus, an equation in the slope-intercept form will be:

$y=\frac{-1}{2}x+0$

8 0

3 years ago

The length of the longest side of a triangle is 3 times the shortest side. The length of the middle side is 7cm less than twice

astraxan [27]

Answer:

Step-by-step explanation:

YW NP CAN I GET BRAINLIST

4 0

3 years ago

Which list shows these numbers in order from least to greatest

Rainbow [258]

Answer:

B) -5, -2.4, 20%, sqrt(9), 3pi

Step-by-step explanation:

sqrt(9) = 3

3pi = 3 * 3.14 = 9.42

20% = 0.2

Answer: B) -5, -2.4, 20%, sqrt(9), 3pi

4 0

3 years ago

Read 2 more answers

Write the quadratic equation whose roots are 3 and -6, and whose leading coefficient is 3.

Delvig [45]

Answer:

Step-by-step explanation:

if the roots are 3 and -6, we can start with:

$(x-3)(x+6)=0$

But the leading coefficient must be 3, we just add a 3 to one of the x's:

$( 3 x-3)(x+6)=0$

But now we have to make sure the roots work again:

$( 3 x-9)(x+6)=0$

So our equation is:

[/tex]f(x)=3x^2+9x-54[/tex]

4 0

4 years ago

A homeowner plans to hang wallpaper on one wall of a bedroom that is 15 feet long. If a strip of wallepe wallpaper is 20 INCHES

sukhopar [10]

Answer:

The homeowner will require 9 strips of wallpaper.

Step-by-step explanation:

The question is asking <em>"how many 20 inches fit into 15 feet?".</em>

We know that

1 foot = 12 inches;

therefore, 15 feet will be

15 ft * 12 in/ft = 180 in.

Now, the number of 20 inches wallpaper strips that will fit into 180 in long wall will be

180 in/ 20 in = 9

Therefore, the homeowner will require 9 strips of wallpaper.

3 0

4 years ago