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Evgen [1.6K]
3 years ago
7

2.

Mathematics
2 answers:
ivann1987 [24]3 years ago
7 0

Answer: A

Step-by-step explanation:

LUCKY_DIMON [66]3 years ago
5 0

Answer:

A. -45

Step-by-step explanation:

Since it says the dolphin dove 45 feet below sea level, it would mean that the integer is negative.

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Share 4000 in a ratio 3:4:1​
muminat

Answer:

3/8 x 4000 = 1500

4/8 x 4000 = 2000

1/8 x 4000 =500

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2 years ago
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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
3.14•8.7•8.7•14.7 <br> Round to the nearest hundreds
Trava [24]

Answer:

3493.70

Step-by-step explanation:

if you multipy all these in a calculator you get a long number, look at the third digit behind the decimal, if its 5+ then make the second digit behind the decimal one number higher. If its 4 or under than keep the number the same. To round, cut off all the digits behind the second digit thats past the secimal

5 0
3 years ago
Last year, 50 students attended the winter carnival. This year, 60 students attended the carnival. Which statement below correct
SVETLANKA909090 [29]

Answer: 20% increase

Step-by-step explanation:

change/ original number

(60 - 50 / 50) x 100 = 20

20%

5 0
3 years ago
Read 2 more answers
Can sum1 hurry and give me the answers to theses pls !!
suter [353]

Answer:

i dont understand what you want us to do lol?

Step-by-step explanation:

6 0
2 years ago
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