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3 years ago

Khan academy anyone can help me plz on this

Mathematics

1 answer:

FromTheMoon [43]3 years ago

6 0

The answer is B. X is less than or equal to 0.

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Find the perimeter AND area of the parallelogram ABCD. Show all work

nexus9112 [7]

Since, this is parallelogram

so, opposite sides are equal

We will find value of sides

Calculation of AB:

we are given point A=(-2,3)

point B=(4,0)

we can use distance formula

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

now, we can plug values

$AB=\sqrt{(4+2)^2+(3-0)^2}$

$AB=3\sqrt{5}$

Since, this is parallelogram

so, opposite sides are equal

so,

$CD=AB=3\sqrt{5}$

Calculation of AD:

point A =(-2,3)

point D=(-5,2)

we can use distance formula

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

now, we can plug values

$AD=\sqrt{(-5+2)^2+(2-3)^2}$

$AD=\sqrt{10}$

Since, this is parallelogram

so, opposite sides are equal

so,

$BC=AD=\sqrt{10}$

Calculation of AE:

point A=(-2,3)

point E=(-3,1)

we can use distance formula

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

now, we can plug values

$AE=\sqrt{(-3+2)^2+(1-3)^2}$

$AE=\sqrt{5}$

(a)

we know that

perimeter of a parallelogram is sum of all sides

so,

perimeter is

$=AB+BC+CD+DA$

now, we can plug values

$=3\sqrt{5}+\sqrt{10}+3\sqrt{5}+\sqrt{10}$

$=6\sqrt{5}+2\sqrt{10}$ ...........Answer

(b)

we can use area of parallelogram formula

$A=AE\times CD$

we can plug values

$A=\sqrt{5}\times 3\sqrt{5}$

$A=15$ ............Answer

4 0

3 years ago

What is equivalent to 16.8 - 18.6

In-s [12.5K]

Answer:

16.8-18.6= -1.8

Step-by-step explanation:

It must be negative

4 0

3 years ago

carl takes a random sample of 100 students in his school and finds that 72% of the sample prefers pizza over burgers. there are

Sonbull [250]

For every 100 students, 72 prefer pizza.
The are 15 groups of 100 students each amongst 1500 students;
The total number of students preferring pizza then is;
15*72= 1080

6 0

3 years ago

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3c =______________fl oz

Harlamova29_29 [7]

3 cups=24 fluid ounces.

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3 years ago

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What is the sum of -6 4/5 and -6 4/5

shepuryov [24]

Answer:

i may be correct or not, i am not sure

Step-by-step explanation:

-34/5+-34/5 is -68/5 which is 13 3/5

8 0

4 years ago

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