All categories

3 years ago

Please help me with this (ASAP)

Mathematics

1 answer:

oee [108]3 years ago

4 0

Well what does the question ask you

You might be interested in

EF is the median of trapezoid ABCD.

BARSIC [14]

Answer:

Part A) $x = 11$

B) length of BC = x + 12 = x + 12 = 11 + 12 =23

length of EF = 4x - 18 = 4(11) - 18 = 44 - 18 =26

length of AD = 3x - 18 = 3(11) - 4 = 33 - 4 =29

Step-by-step explanation:

Median of trapezium is $m=\frac{base1+base2}{2}$

In provided figure, base1 is x+12 and base2 is 3x-4

A) solve for value of x

calculate the median $m=\frac{base1+base2}{2}$

$4x-18=\frac{x+12+3x-4}{2}$

$4x-18=\frac{4x+8}{2}$

$4x-18=2x+4$

$2x-18=4$

$2x = 18 + 4$

$2x = 22$

$x = 11$

B) To find the length of BC, AD and EF , put the value of x in equation of lines

length of BC = x + 12 = x + 12 = 11 + 12 =23

length of EF = 4x - 18 = 4(11) - 18 = 44 - 18 =26

length of AD = 3x - 4 = 3(11) - 4 = 33 - 4 =29

5 0

3 years ago

The formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by p

yawa3891 [41]

500=4πr^2. first divide 500 from four which will equal 125, then divide 125 with π and it will equal 39.788 . finally √39.788. the answer will be r=6.3 or 6

8 0

3 years ago

Help please and thank you!

Usimov [2.4K]

Answer:

Option A

Explanation:

$\rightarrow \sf sin\left(\dfrac{7\pi }{6}\right)$

$\rightarrow \sf \sin \left(\pi +\dfrac{\pi }{6}\right)$

$\rightarrow \sin \left(\pi \right)\cos \left(\dfrac{\pi }{6}\right)+\cos \left(\pi \right)\sin \left(\dfrac{\pi }{6}\right)$

$\rightarrow \sf 0 * \dfrac{\sqrt{3}}{2}+\left(-1\right) * \dfrac{1}{2}$

$\rightarrow \sf -\dfrac{1}{2}$

7 0

2 years ago

When five is added to three more than a certain the result is 19 what is the number?

gulaghasi [49]

Answer: It should be 11

Step-by-step explanation:

11 + 3 = 14 14 is three more than 11 and when you add 5 you get 19

8 0

3 years ago

State the domain and range and determine if it's a function?<br> Domain:<br> Range:<br> Function?

kramer

Step-by-step explanation: Let's first write the coordinates of each point.

When finding the coordinates of a

given point, be very careful with your signs.

On the x-axis, left means negative and right means positive

and on the y-axis, down means negative and up means positive.

The points in this problem are (-1, -2), (4, -2), (1, 1), (2, 3).

The domain is the set of all x-coordinates.

So here, the domain or D = {-1, 4, 1, 2}.

The range is the set of all y-coordinates.

So here, the range is {-2, 1, 3}.

Notice that I only listed the 1 once.

We only need to mention it once in our range.

Finally, let's determine if it' a function.

If none of the x-coordinates repeat, it's a function.

Since none of them do repeat, it's a function.

8 0

3 years ago