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2 years ago

Please help , thank you so much !!

Mathematics

1 answer:

Shkiper50 [21]2 years ago

3 0

Answer:

that is scientifically impossible

Step-by-step explanation:

one you can't add, subtract, round up, or use decimals write that down.

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What is the answer to the following <br>-1+8=

GenaCL600 [577]

Answer:

Step-by-step explanation:

-1+8=7

8 0

3 years ago

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I really need some help .............

Effectus [21]

Answer:

Step-by-step explanation:

add the number of minutes for each day and then divide that number by the number of days

$35+60+65+60+85$ $=305$

$305 / 5 = 61$

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3 years ago

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Thu wants to play "guess my number".she states,"when I triple my number and add five,I get twenty-six. What's my number?" what i

Mama L [17]

Let's break this up:
let x = the number
"when I triple my number" is the same as
3x
"and add five" is the same as
+5
We combine it to get
3x+5
"I get twenty-six"
=26
combine to get
3x+5=26
Now we just solve:
subtract 5 from both sides to get
3x=21
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6 0

3 years ago

A country's population in 1991 was 114 million. In 1997 it was 120 million. Estimate the population in 2014 using exponential gr

Rufina [12.5K]

The answer is 138 million.

Step 1. Calculate the growth rate.
Step 2. Calculate the population number in 2014.

We will use the formula for exponential growth:
A = P * eⁿˣ
where:
A - the final amount (value)
P - the initial amount (value)
e - the mathematical constant (e ≈ 2.72)
n - the growth rate
x - the time

Step 1:
A = 120 million = 120 000 000
P = 114 million = 114 000 000
n = ?
x = 1997 - 1991 = 6
Therefore:
$120 000 000 = 114 000 000 * e ^{n*6} \\ e ^{n*6} =120 000 000 /114000000 \\ e ^{n*6} =1.05 \\$
Logarithm both sides of the equation:
$ln(e ^{n*6})=ln(1.05) \\ n*6*ln(e) = ln(1.05) \\ 6n=ln(1.05) \\ n = \frac{ln(1.05)}{6} \\ n = \frac{0.05}{6} \\ n = 0.0083$

Step 2:
Now when we know the growth rate, it is easy to estimate the population in 2014
A = ?
P = 120 000 000
n = 0.0083
t = 2014 - 1997 = 17
$A = 120 000 000 * e ^{0.0083*17} \\ 
A = 120 000 000 * e^{0.1411} \\ 
A = 120 000 000 * 1.15 \\ 
A = 138 000 000
$
Thus, the population will be 138 million in 2014

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3 years ago

Sasha thought of a number. She called her number t. She divided her number by 7, added 23 to the result, and she got 43. What wa

tino4ka555 [31]

Answer:

161

Step-by-step explanation:

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3 years ago