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Aleksandr-060686 [28]
3 years ago
13

show how to multiply 6x298 using friendly numbers and then using properties and mental math.write about which method you like be

tter and why
Mathematics
1 answer:
Mnenie [13.5K]3 years ago
4 0
Multiply 300 times 5. you know that 3 times 5 equals 15. 15 plus 2 zeros is 1500. 1500 is the estimated answer
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At a camp, 20 children were surveyed to see what size shirt they wear. 5 of the students said they were a Small shirt. If there
Kisachek [45]

Answer:

aproximately 77

Step-by-step explanation:

because you need to divide 308 by 20 you get 15.4 then u multiply 15.4 by 5 and then u get 77

5 0
3 years ago
Help me with this problem please
Ymorist [56]

Answer:

-15

Step-by-step explanation:

3^2 - 3 x [(5^2 - 9) / 2 ]

9 - 3 x [(25 - 9) / 2]

9 - 3 x (16/2)

9 - 3 x 8

9 - 24

-15

5 0
3 years ago
Read 2 more answers
Does someone know the answer? Simplify it <br> 3(2a^2-3a+1)-(2a+7)
igor_vitrenko [27]

Answer:

5a3-5a2

Step-by-step explanation:

7 0
2 years ago
Is XYZ = ABC? If so, name which similarity postulate or theorem applies.
vazorg [7]

C. Similar - AA

There is no information given that shows differences between the two triangles so you can assume that they're similar.  The two angles are next to each other with no side interrupting them, and no side length is given, therefore the answer is Similar - AA (angle - angle)

3 0
3 years ago
Read 2 more answers
Mr. Smith estimates that
OLEGan [10]

Answer:

B. 7.5 hours

Step-by-step explanation:

Assuming that both hoses fill at the same rate, then by simple proportion,

To raise the pool by 1 foot of water:

1 hose ---> takes 3 hours

2 hoses ----> fills twice as fast ---> will take half the time ---> 3/2 = 1.5 hrs

Hence with 2 hoses, it will take 1.5 hours to fill 1 foot of water.

to fill 5 feet of water, we will need 1.5 hours x 5 feet = 7.5 hours

5 0
3 years ago
Read 2 more answers
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