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Angelina_Jolie [31]
3 years ago
15

Explain how you can use a quick picture to find 3×2.7

Mathematics
2 answers:
Katen [24]3 years ago
6 0
5×2.7=13.5
7×2=35, carry the 3.
5×2=10, then add the 3 that was on top and then bring down the final result 13.
Once you've done that you have 135. Your final step is to move the decimal one place to the left which you then get 13.5.
Your final result is 13.5.
Hope this helped.

DanielleElmas [232]3 years ago
5 0
Here is an quick example <span>A "quick picture" is an estimate than? 5 x 2.7 ..... 5 x 3= 15 Its been a long time since elementary school and I do not remember "quick picture" The question was How can you use a "quick picture" to find 5 x 2.7? the answer is 13.5.......an estimate would be 15
dose this help?</span>
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Answer the following.
nexus9112 [7]

Step-by-step explanation:

1075 students were asked how close they live to the college. The table shows the results below with some values missing. Enter the correct values in the boxes remembering to use the % symbol where necessary.

<u>20 to 25: </u>given 20%

20% of 1,075 = 215

<u>15 to 19: </u>given 12%

12% of 1,075 = 129

<u>10 to 14: </u>given 516 students

(516/1,075)*100 = 48%

<u>5 to 9: </u>given 162 students

(162/1,075)*100 = 15.07%

<u>< 5: </u>given 53 students

(53/1,075)*100 = 4.93%

3 0
10 months ago
A rectangle has a width of 9 units and a length of 40 units. What is the length of a diagonal?
aleksandr82 [10.1K]

Answer:

41 units

Step-by-step explanation:

Pythagorean's  theorem,

Hypotenuse² = base² + adjacent²

Diagonal² = length² + width²

                 = 40² + 9²

                 = 1600 + 81 = 1681

Diagonal = √1681 = 41 units

7 0
2 years ago
Tickets for a county fair are $8 for an adult and $5 for a child. If you have a 15% discount card, how
FrozenT [24]

Answer:

$21.25

Step-by-step explanation:

The cost of the 2 adult tickets before the discount is $8 * 2 = $16

The cost of the 2 child tickets before the discount is $5 * 2 = $10

The total cost before the discount is $16 + $10 = $26

The total cost after the discount is

$26 * (1 - 0.15) =

$26 * 0.85 =

$21.25

4 0
1 year ago
A 24.6 g marble sliding to the right at 62.0 cm/s overtakes and collides elastically with a 12.3 g marble moving in the same dir
Softa [21]

Answer:

Velocity of the 24.6 g marble is 31 cm/s.

Step-by-step explanation:

Given:

Marble 1:

Mass of the marble (m_1) = 12.3 gm

Velocity of m_1 before collision v_1_i = 15.5 cm/s

Velocity of m_1 after collision v_1_f = 77.5 cm/s

Marble 2:

Mass of the marble (m_2) = 24.6 gm

Velocity of m_2 before collision v_2_i = 62 cm/s

Velocity of m_2 after collision v_2_f = ?

From the law of conservation of momentum, we know that momentum before equals the momentum after :

So,

⇒ P(i)=P(f)

⇒ (m_1\times v_1_i )+(m_2\times v_2_i) =(m_1\times v_1_f)+(m_2\times v_2_f)

⇒ Plugging the values.

⇒ (12.3\times 15.5) +(24.6\times 62)=(12.3\times 77.5)+(24.6\times v_2_f)

⇒ 190.65+1525.2=953.25+24.6\times v_2_f

⇒ 1715.85=953.25+24.6\times v_2_f

⇒ 1715.85-953.25=24.6\times v_2_f ...subtracting both sides 953.25

⇒ 762.6=24.6\times v_2_f

⇒ \frac{762.6}{24.6}\ =v_2_f ...dividing both sides with 24.6

⇒ 31=v_2_f

⇒ v_2_f =31 cm/s

The velocity of the 24.6 g marble after the collision is 31 cm/s and it will move opposite to of the 12.3 g marbles that is towards left.

6 0
3 years ago
2.5 hours travelled and 187 distance traveled in miles ( I have to find the unit rate)
Elena L [17]

Answer:

The first one is 75 and the second one is 81

Step-by-step explanation:

put 187.5 into calculator then divide it by the bottom number/denominator in this case 2.5 and then you get 75

put 303.75 into calculator then divide it by the denominator or 3.75 and you get an answer of 81

so 81 miles per hour

I really hope this helps!

8 0
3 years ago
Read 2 more answers
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