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3 years ago

Solve the equation.

Mathematics

2 answers:

vekshin13 years ago

6 0

4.9x + 4.4 = 19.1
4.9x = 19.1 - 4.4
4.9x = 14.7
x = 3

answer is B. 3

Bingel [31]3 years ago

6 0

4.9x = 19.1 - 4.4 = 14.7
49x = 147
x = 147 ÷ 49 = 3
B is thus my answer.

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Maurinko [17]

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4 years ago

A 4 foot tree was planted in 2012 outside a high school. The tree grew continuously by 22% each year from that point. Find out w

Brut [27]

Answer:

The height of the tree in 2020 was of 19.63 feet.

Step-by-step explanation:

Exponential equation for growth:

The exponential equation for the growth of an amount has the following format:

$H(t) = H(0)(1+r)^t$

In which H(t) is the amount after t years, H(0) is the initial amount and r is the growth rate, as a decimal.

A 4 foot tree was planted in 2012 outside a high school.

This means that $H(0) = 4$

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This means that $r = 0.22$

Find out what the height of the tree was in 2020.

2020 is 2020 - 2012 = 8 years after 2012, so this is H(8).

$H(t) = H(0)(1+r)^t$

$H(t) = 4(1+0.22)^t$

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$H(4) = 4(1.22)^8 = 19.63$

The height of the tree in 2020 was of 19.63 feet.

6 0

3 years ago

I need help with number 18

algol13

Answer:

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Step-by-step explanation:

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4 years ago

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Answer: D

Step-by-step explanation:

Standard Deviation σ2 =

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Σ(xi - μ)2/N

=(3 - 61.7)2 + ... + (99 - 61.7)2/10

=58414.1/10

= 5841.41

σ = √5841.41

= 76.429117488036

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=8758.4/10

= 875.84

σ = √875.84

= 29.59459410095

D) (79 - 79)2 + ... + (79 - 79)2/10

=0/10

= 0

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= 0

I hope this helps, mark as Brainliest please.

6 0

3 years ago