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Tomtit [17]
3 years ago
9

There are 20 rows of seats on the concert hall:25 seats are in the 1st row

Mathematics
1 answer:
lapo4ka [179]3 years ago
7 0

Answer:

20x25=500 10x25+10×25=500

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Write using exponential notation 9*9*4*4*4*4
kolezko [41]
9^2*4^4 is the correct answer I believe.
8 0
3 years ago
The table shows the solution to the equation |2x − 5| − 2 = 3: Step 1 |2x − 5| = 3 + 2 Step 2 |2x − 5| = 5 Step 3 2x − 5 = 5 or
telo118 [61]
<span> |2x − 5| − 2 = 3
</span><span>1) |2x − 5|  = 3 +2
2)</span><span> |2x − 5| = 5  
3) 2x-5 = 5, or 2x-5= -5
4)2x=10, or 2x=0
5) x = 5 , or x = 0

Check:
</span> |2x − 5| − 2 = 3
 |2*5− 5| − 2 = 3 or  |2*0 − 5| − 2 = 3
|5|-2=3               or   |-5| -2 =3
3=3 (true)           or    3=3 (true)

All steps are correct.

     
3 0
3 years ago
Find all values of x which make this inequality true.<br> | x + 11 | ≥ 2
mote1985 [20]

Answer:

There are infinite solutions of x such as 0,1,2 ...

i.e for all x≥0 given inequality is true.

i.e x€[0,∞)

3 0
2 years ago
The time required to make one bouquet in a flower stall is of an hour. Find the time
solong [7]

Answer:

13.5 hours

the fitness gram pacer test is a multi stage aerobic capacity test that progressivly gets more difficult as it continues

5 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST. please help
kondor19780726 [428]

Answer:

x = 11.4 m

y = 21 m

man's shadow =  9.6 m

Step-by-step explanation:

measure of third angle must be 50 degrees (180 - (40 + 90))

you can take tan50° = 15/y and 'y' will equal approx. 21

to find 'x' you can take tan21° = (21-x) /25 and 21 - x = 25 · tan21°

21 - x = 9.6

-x = -11.4

x = 11.4

man's shadow is the difference of 21 and 11.4, which is 9.6

4 0
2 years ago
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