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2 years ago

HELP Given: ABCD is a parallelogram and AC bisects BD. Prove: AC bisects

Mathematics

1 answer:

34kurt2 years ago

8 0

2) $ABCD$ is a rhombus (a parallelogram with perpendicular diagonals is a rhombus)

3) $\overline{AC}$ bisects $\angle BCD$ (diagonals of a rhombus bisect the angles from which they are drawn)

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Help me now now plz I’m trying to passssss

wlad13 [49]

I’m sure your answer is D. 180 - 125 will get you 55.!
Have a nice day!

4 0

2 years ago

Two plants, plant A and B, are being grown in a science experiment. Plant A is 6 cm tall and growing at a rate of 4 cm/day. Plan

Irina18 [472]

By the second day of growth

6 0

3 years ago

What is the sign of f on the interval -2

TEA [102]

Answer:

$f$ is sometimes positive and sometimes negative.

Step-by-step explanation:

$f(x)=(x-3)(x+2)(x+4)(x+4)(x-1)(2x-9)$

Take $x=-1\in(-2,\frac{9}{2})\ as-2$

$f(-1)=(-1-3)(-1+2)(-1+4)(-1-1)(-2-9)\\\\=(-4)(1)(3)(-2)(-11)\\\\=-264\\\\f(-1)$

Take $x=2\in(-2,\frac{9}{2})\ as\ -2$

$f(2)=(2,-3)(2+2)(2+4)(2-1)(2\times2-9)\\\\=(-1)(4)(6)(1)(-5)\\\\=120\\\\f(2)>0$

Hence $f(x)$ for $x=-1$ and $f(x)>0$ for $x=2$

So $f$ is sometimes positive and sometimes negative in the interval.

3 0

3 years ago

How many eight-digit serial numbers contain three of one digit, two of another digit, two of yet another digit, and one of still

Harlamova29_29 [7]

It is easier to understand the problem if you create a number based on the criteria and then perform the computations. I am going to choose: 111 22 33 4

There are 10 options for the first "1" and only 1 option for the other two 1's

There are 9 remaining options for the first "2" and only 1 option for the other 2

There are 8 remaining options for the first "3" and only 1 option for the other 3

There are 7 remaining options for the "4"

10 x 1 x 1 x 9 x 1 x 8 x 1 x 7

10 x 9 x 8 x 7 = 5,040

Answer: 5,040

6 0

3 years ago

Can u guys help me please ?‍♀️

Over [174]

Answer:

r = 8 ft

Step-by-step explanation:

The formula for circumference of a circle is

C = 2 * pi *r

We know the circumference is 16 pi

16 pi = 2 pi r

Divide each side by 2pi

16 pi /2 pi = 2 pi r / (2pi)

8 = r

7 0

3 years ago