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3 years ago

HELP PLEASE

Mathematics

1 answer:

sveta [45]3 years ago

3 0

Answer:

Step-by-step explanation:

im not for sure but i think its c

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The coordinates of the preimage of polygon ABCD and the image ofA'B'C'D' are given below. What rule describes the transformation

I am Lyosha [343]

The coordinates of polygon ABCD are:

A(4,3) B(4,0) C(-1, 1) D(-1, 4)

and

The coordinates of the transformed polygon A'B'C'D' are:

A'(1, 1) B'(1, -2) C'(-4,-1) D'(-4, 2)

To understand the transformed rule, just remove the coordinates of the actual polygon from the transformed polygon.

A' - A = (1, 1) - (4, 3) = (1 - 4, 1 - 3) = (-3, -2)

Similarly,

B' - B = (1, -2) - (4, 0) = (1 - 4, -2 - 0) = (-3, 2)

The same result will be obtained from other points (C and D). Therefore, the first option (-3, 2) is correct.

3 0

1 year ago

3. A package of 23 medicated cough drops costs $3.00. What is the unit cost (unit rate)? O $0.11 per cough drop O $1.30 per coug

Simora [160]

Answer:

$ 0.13

Step-by-step explanation:

4 0

3 years ago

A biker rode 45 miles in 180 minutes. At what speed (in miles per hour) was the biker travelling? A. 4 B. 17 C. 9 D. 12

Anastasy [175]

Answer:

v = 15 miles / hour

Step-by-step explanation:

Given:

Distance covered by biker = s=45 miles

time taken by him = t=180 minutes

TO Find:

speed in miles per hour = v = ?

Solution:

As it is given that the distance covered is 45 miles

and time taken by him is 180 minutes

as one hour have 60 minutes

so time taken by rider = t = 180 /60

= 3 hours

this step is done because we have to find speed in miles per hour

Now

The formula for finding the distance is

distance = speed * time

s = v * t

we have to find v

so dividing both sides by t

$\frac{s}{t} = \frac{v*t}{t}$

it becomes

$v = \frac{s}{t}$

Putting the values

$v = \frac{45}{3}$

solving it gives

v = 15 miles / hour

which is the required speed

in the given options it is not available

5 0

3 years ago

PLEASE HELP! GEOMETRY.

vitfil [10]

I hope this helps you

3 0

3 years ago

If f(x) = 2х2 + 3 and g(x) = х2 -7, find (f- а)(x).

Lerok [7]

Answer:

C. x^2 -4

Step-by-step explanation:

What you do is subtract the functions as said by

(f-g)(x).

so:

f(x)-g(x)

(2x^2+3) - (x^2 -7)

2x^2 -x^2 +3 - 7= x^2 -4

7 0

3 years ago