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3 years ago

14

Very confused on 1-3. please help

1 answer:

Arte-miy333 [17]3 years ago

6 0

1. the length of side DA is 2
2. the length of side AB is 4
3. ∆ADF is congruent to ∆BDE because all three pairs of sides are equal to one another.
side AD is congruent to side BD.
side DF is congruent to side DE.
side EB is congruent to side FA.

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How would I find all real solutions in x^4/3 -10^2/3 +21= 0

Oxana [17]

Answer:

Step-by-step explanation:

This equation looks complicated.We have to make it easier

let's say x^2/3 = t and x^4/3 = t^2

t^2-10t+21=0 [ we can factorize this equation as a (t-3)(t-7) ]

(t-3)(t-7)=0 [ that means , t can be 3 or 7 ]

But don't forget we have to find x not t so,

t=x^2/3=3 ∛ x^2 = 3 x^2 = 9 x=3 or x= -3

t=x^2/3=7 ∛x^2 = 7 x^2 = 343 x ~18.5 or x ~ -18.5

7 0

2 years ago

Based on the graph below, what is the y-intercept?<br><br><br><br> -5<br> -3<br> 3<br> 5

Crank

The y-intercept is -3

7 0

2 years ago

Read 2 more answers

EMERGENCY (NEED HEP NOW!!!)

diamong [38]

Answer:

x=-2.25,y=-2.25

Step-by-step explanation:

The given system is

$4x - y = - 9 \\ 3x - 3y = 0$

We want to solve the system for x and y that makes the system true.

Let us multiply the first equation by 3 while maintaining the second equation:

$12x -3 y = - 27 \\ 3x - 3y = 0$

Subtract the current second equation from the first one.

$12x = - 27$

Divide through by 12:

$x = - \frac{27}{12} = - 2.25$

From the second equation we have:

$3x = 3y$

This implies that:

$x = y = - 2.25$

8 0

3 years ago

When 0.5(20x – 50y + 36) – 0.25(–100x + 40y – 12) is simplified, what is the resulting expression?

stiks02 [169]

Answer:

<h2> $35x - 35y + 21$ </h2>

solution,

$0.5(20x - 50y + 36) - 0.25( - 100x + 40y - 12) \\ = 10x - 25y + 18 + 25x - 10y + 3 \\$

Combine the like terms:

$= 10x + 25x - 25y - 10y + 18 + 3 \\$

Simplify:

$35x - 35y + 21$

Hope this helps...

Good luck on your assignment...

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2 years ago

The circumference of a circle is 32π. What is the diameter of this circle?

lawyer [7]

C = 2 (pi) r

32 (pi) = c

32 (pi)= 2 (pi) r

r= 16

2r = d
d= 32

hope that helps

4 0

3 years ago