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3 years ago

In the figure below, EC || AB. Find the length of EC.

Mathematics

2 answers:

serious [3.7K]3 years ago

7 0

The answer is A I hope this helps

timofeeve [1]3 years ago

4 0

Answer:

Letter a)

Step-by-step explanation:

quizlet

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Beth purchased a computer, and its value depreciated exponentially each year. Beth will sketch a graph of the situation, where x

Katyanochek1 [597]

What is x?

It is the number of years since purchase. Can this be negative?

NO! Years cannot be negative. So we disregard negative x-axis.

What is y?

It is the value of the computer at that year. A computer starts off with a positive value (y axis) and depreciates to 0 after some years. Can this be negative?

NO! At 0 value, the computer is worth nothing! There is nothing known as negative value. So we disregard negative y-axis.

The graph that Beth will sketch will have to be in the 1st quadrant (positive x-axis & positive y-axis).

ANSWER: Quadrant I only

3 0

3 years ago

elsa,ryan, and jim sent a total of 116 text messgaes during the weekend. ryan sent 4 times as many messages as jim. elsa sent 10

kozerog [31]

The number of messages sent by Elsa, Ryan and Jim are 11 , 84 and 21 respectively.

Explanation

Suppose, the number of messages Jim sent is $x$

As Ryan sent 4 times as many messages as Jim, so the number of messages sent by Ryan $= 4x$

Also, Elsa sent 10 fewer messages than Jim, so the number of messages sent by Elsa $= x-10$

Given that, they sent a total of 116 text messages. So the equation will be.......

$x+4x+(x-10)=116\\ \\ 6x-10=116\\ \\ 6x= 126\\ \\ x= \frac{126}{6}= 21$

So, the number of messages sent by each of them.....

$Jim = 21\\ Ryan = 4*21= 84\\ Elsa= 21-10= 11$

4 0

3 years ago

Q2) The isoscsles right triangle has 2 of it’s sides 10,10 it’s area is

nydimaria [60]

Answer:

Step-by-step explanation:

side a = 10

Area of isosceles triangle = $\frac{\sqrt{3}a^{2}}{4}\\\\$

= $\frac{\sqrt{3}*10*10}{4}\\\\=\sqrt{3}*5*5\\\\=25\sqrt{3}\\\\=25*1.732$

= 43.3 square units

3 0

3 years ago

How do I solve the following equation

nalin [4]

Answer:

z = 72

Step-by-step explanation:

-1/4z + 12 = -6

× 4

-z + 48 = - 24

-z = - 72

z = 72

7 0

2 years ago

Read 2 more answers

Is the function f(x) = (- 7) ^ x an exponential function ? If so , identify the base . If not , why not ?

Degger [83]

Answer:

Yeah, the base is -7

Step-by-step explanation:

8 0

3 years ago