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notsponge [240]
3 years ago
10

Erica (35 kg ) and Danny (44 kg ) are bouncing on a trampoline. Just as Erica reaches the high point of her bounce, Danny is mov

ing upward past her at 4.9 m/s . At that instant he grabs hold of her.
Mathematics
1 answer:
Tema [17]3 years ago
5 0

Answer:

v= 2.66 m/sec

Step-by-step explanation:

supposing we have to find their speed just as he grabs her.

Applying law of conservation of Energy

That is

p_i= p_f

Initial momentum = p_i = 35×0+ 44×4.9= 210.6 kg.m/sec.

final momentum p_f= (35+44)v

let the final velocity of combined body be v

therefore,

79v= 210.6

v= 2.66 m/sec.

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People are mean by only wanna get points like that person who answered before me
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The table shows the growth, in centimeters, of plants in two different soils after two weeks.
kodGreya [7K]

it Might be D. Soil B had greater growth because its data have a greater median.

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For each set of data find mean median and mode 30,20,14,18,38,22​
lakkis [162]

Answer:

See below

Step-by-step explanation:

Mean: \frac{30+20+14+18+38+22}{6}=23.\overline6\overline6

Median: 14, 18, 20, 22, 30, 38 -> (20+22)/2 = 21

Mode: No mode as all elements are of equal frequency

3 0
3 years ago
Give the property that justifies each step.
hjlf

Answer:

Please check the explanation below.

Step-by-step explanation:

Some of the properties are defined as:

  • <em>Distributive property</em>

a(b+c) = ab+ac

For example,

suppose a=1, b=2, c=3

1(2+3) = 1(2) + 1(3)

5 = 2+3 = 5

  • <em>Subtraction property of Equality</em>

if (a=b), then a-c = b-c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a-c = b-c ⇒ 1-3 = 1 - 3  ⇒ -2 = -2

  • <em>Addition property of Equality</em>

if (a=b), then a+c = b+c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a+c = b+c ⇒ 1+3 = 1+3  ⇒ 4 = 4

  • <em>Multiplicative property of Equality</em>

if (a=b), then a×c = b×c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a×c = b×c ⇒ 1×3 = 1 × 3  ⇒ 3 = 3

  • <em>Division property of Equality</em>

if (a=b), then a÷c = b÷c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a÷c = b÷c ⇒ 1÷3 = 1 ÷ 3  ⇒ 1/3 = 1/3

Let's solve the given equation using the above properties.

5(x+10) = 20        Given

5x+50 = 20          1) Distriburive property ∵ a(b+c) = ab+ac

5x = -30               2) Subtraction property of Equality ∵ if (a=b), then a-c = b-c

x = -6                    3) Division property of Equality  ∵ if (a=b), then a÷c = b÷c

         

5 0
3 years ago
Which of the following represents *picture attached*
uranmaximum [27]

Answer:

The answer is option C

Step-by-step explanation:

104

E 6

x = 1

Write the number as a product with the factor 1

104

E 6 × 1

n = 1

Rewrite the sum

That's

104

6 × E 1

n = 1

Find the sum of n terms of 1 using the formula

n

E 1

k= 1

Which is

6(104) = 624

Hope this helps you

6 0
4 years ago
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