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Rufina [12.5K]
2 years ago
15

Which is the best estimate of the difference between

Mathematics
1 answer:
Romashka-Z-Leto [24]2 years ago
7 0

Answer:

c. 5

Step-by-step explanation:

678 rounds to 700 and 218 rounds to 200. 700-200=500

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Explain how you could use a number line to show that -4 + 3 and 3 + (-4) have the same value
iogann1982 [59]
Find (-4) on the number line and move 3 to the right.  You will end up at (-1).

Find (3) on the number line and move 4 to the left.  You will end up at the same value of (-1).
6 0
3 years ago
Two gears in a machine are aligned by a mark drawn from the center of one gear to the center of the other. If the first gear has
Aleksandr [31]

Answer:

5

Step-by-step explanation:

for the first gear

revolutions/teeth

1 / 24

2 / 48

3 / 72

4 / 96

5 / 120

6 / 144

for the second gear

revolutions/teeth

1 / 40

2 / 80

3 / 120

4 / 160

<em>the two marks will meet after 120 teeth, 5 revolutions of the first gear and 3 revolutions of the second.</em>

the way to get that amount of teeth is

24 = 2 \times 2 \times 2 \times 3 =  {2}^{3}  \times 3

40 = 2 \times 2 \times 2 \times 5 =   {2}^{3}  \times 5

the Least Common Multiple equals the product of all factors, but those factors who are repeted for both numbers should be only once.

{2}^{3} \times 5 \times 3 = 120

120 teeth are 5 revolutions for gear1 and 3 por gear2

8 0
3 years ago
A rectangular prism with a square base is cut from the center of a triangular prism. Each side of the square base measures 1.7 u
anzhelika [568]

Answer:

45.4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is another name for CA
abruzzese [7]

Answer:

i think its b

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Geometry help please
Nana76 [90]

Answer:

CED = 117

Step-by-step explanation:

21x +21 = 7x +49

21x - 7x = 49 - 21

14x = 28

x = 28/14

x = 2

7x + 49

=7(2) + 49

=14 + 49

=63

180 -63 = 117

CED= 117

8 0
2 years ago
Read 2 more answers
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