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2 years ago

What can’t talk but will reply when spoken to?

Mathematics

2 answers:

Ostrovityanka [42]2 years ago

8 0

Answer:

echo

Step-by-step explanation:

Hope this helps!

(Brainliest?)

Neko [114]2 years ago

3 0

Answer:

Hope it helps! :D

Step-by-step explanation:

An echo is a natural phenomenon when sound reflects back to the listener with a delay after the actual sound time. When we shout and then we could hear the same sound back, that is called the echo. So it doesn't come without one making a sound. So it is only a reply and can not initiate sound production first.

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Using the figure below, select the pairs of complementary angles.

Mila [183]

Answer:

c) <DBE and <EBC

Step-by-step explanation:

This is because when added together, both angles equal 90 degrees.

Complementary angles always equal 90 degrees.

8 0

2 years ago

the boat in calm water is 30 km / h. How far can tourists travel by boat if they have to return after 2 hours to the place from

xeze [42]

Answer:

60km

Step-by-step explanation:

They travel 30km in the first hour, then turn back and travel the same 30km backwards.

7 0

2 years ago

A geometry class has a total of 27 students. The number of females is 13 less than the number of males. How many males and how m

Zanzabum

Answer:

20 males, 7 females

Step-by-step explanation:

x=males

x-13=females

x+x-13=27

2x-13=27

2x=40

x=20

20-13=7

6 0

2 years ago

Simply the square root of negative 50

ZanzabumX [31]

Answer:

5√2

I think, that sign mean square root.. just letting you know.

Hope I helped!

<em>*simplyeliza*</em>

8 0

2 years ago

Write the equation of a line, in slope-intercept form, that has a slope of m=9 and passes through the point (4, 31)

Darina [25.2K]

Answer:

9x-y = 5

Step-by-step explanation:

Equation of line in slope intercept form:

y-y1 = m*(x-x1), m=9, (x1,y1)=(4,31)

y-31 = 9*(x-4)

y-31 = 9x-36

9x-y = 36-31

9x-y = 5

4 0

2 years ago