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3 years ago

12

The corresponding sides of triangles ABC and DEF are congruent. Which statements are always true for triangles ABC and DEF ? Sel

ect all that apply.

2 answers:

Vedmedyk [2.9K]3 years ago

7 0

12+56 u
4678

Formation is explanation is 356

BARSIC [14]3 years ago

6 0

They will always have the same measurements and be added to 90 to get 180

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HELP! 40 points!

Vitek1552 [10]

Y-14=12# x+1 answer of math

7 0

3 years ago

Read 2 more answers

A small airplane flies 1200 miles with an average speed of 300 miles per hour. 2 hours after the plane leaves, a Boeing 747 leav

inysia [295]

The small plane has the following parameters

Distance = 1200 miles

Speed = 300miles/hour

time = ?

$\begin{gathered} \text{Speed =}\frac{dis\tan ce}{time} \\ time\text{= }\frac{1200}{300} \\ \text{time = 4 hours} \end{gathered}$

If a Boeing 747 leaves 2 hours later, the total time becomes 4hours + 2 hours = 6 hours

Considering the distance of the small plane after 6 hours, we have

$\begin{gathered} \text{distance = sp}eed\times\text{ time} \\ d\text{ = 300 }\times6 \\ d\text{ =1800 miles} \end{gathered}$

So the total distance = 1800 miles

Hence the speed of the Boeing 747 will be

$\begin{gathered} \text{Speed =}\frac{dis\tan ce}{time} \\ \text{distance = 1800 miles } \\ time\text{ = 2hours} \end{gathered}$ $\begin{gathered} \text{speed = }\frac{1800}{2} \\ \text{speed = 900 miles/hour} \end{gathered}$

The average speed of the Boeing 747 is 900 miles/ hour

8 0

1 year ago

The number 199,557 contains two sets of digits in which one digit is ten times as great as the other. What are the values of the

Oxana [17]

The answer is 90000 and 9000
500 and 50

3 0

3 years ago

Read 2 more answers

Find the value of x.

eduard

Answer:

$4/12=x/18$

$x=4*18/12$

$x=6$

<u>--------------------------</u>

<u>hope it helps...</u>

<u>have a great day!!</u>

<u></u>

6 0

3 years ago

Write the equation of a parabola whose directrix is y=9.75 and has a focus at (8, 0.25).

lana [24]

Answer:

y = (-1/19)(x - 8)² + 1521/76

Step-by-step explanation:

A parabola moves in such a way that it's distance from it's focus and directrix are always equal.

Now, we are given that directrix is y = 9.75 and focus is at (8, 0.25). Focus can be rewritten as (8, ¼) and directrix can be rewritten as y = 39/4

If we consider a point with the coordinates (x, y), it means the distance from this point to the focus is;

√((x - 8)² + (y - ¼)²)

Distance from that point to the directrix is; (y - 39/4)

Thus;

√((x - 8)² + (y - ¼)²) = (y - 39/4)

Taking the square of both sides gives;

((x - 8)² + (y - ¼)²) = (y - 39/4)²

(x - 8)² + y² - ½y + 1/16 = y² - (39/2)y + (39/4)²

Simplifying this gives;

(x - 8)² - (39/4)² = (½ - 39/2)y

(x - 8)² - 1521/4 = -19y

(x - 8)² - 1521/4 = -19y

Divide both sides by -19 to get;

y = (-1/19)(x - 8)² + 1521/76

6 0

3 years ago