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3 years ago

Classify 8 and 0.25 rational, integers, or whole number pls

1 answer:

5 0

8 and .25 are rational numbers because integers are negative and whole numbers don't include decimals and rational numbers can include whole number like 8 or 8/1 and .25.

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Easy math question please help

kondaur [170]

Answer:

Step-by-step explanation:

2x-3=7

Add 3 to both sides:

2x=10

Divide both sides by 2:

x=5

Hope this helps!

5 0

3 years ago

Read 2 more answers

A country's population in 1994 was 182 million. In 2002 it was 186 million. Estimate the population in 2004 using the exponentia

iogann1982 [59]

$\bf =ae^{kt}\qquad 
\begin{cases}
1994\impliedby \textit{year 0, starting point}\\
t=0\qquad P=182
\end{cases}\implies 182=ae^{k0}
\\\\\\
182=a\cdot e^0\implies 182=a\cdot 1\implies 182=a
\\\\\\
thus\qquad P=182e^{kt}\\\\
-------------------------------\\\\$

$\bf P=182e^{kt}\qquad 
\begin{cases}
2002\impliedby \textit{8 years later}\\
t=8\qquad P=186
\end{cases}\implies 186=182e^{k8}
\\\\\\
\cfrac{186}{182}=e^{8k}\implies ln\left( \frac{93}{91} \right)=ln(e^{8k})\implies ln\left( \frac{93}{91} \right)=8k
\\\\\\
\cfrac{ln\left( \frac{93}{91} \right)}{8}=k\implies 0.0027\approx k\implies \boxed{P=182e^{0.0027t}}$

what's the population in 2004? well, from 1994 to 2004 is 10 years later, so t = 10

plug that in, to get P for 2004

3 0

3 years ago

The length of a rectangle is 1 units more than the width. The area of the rectangle is 56 units. What is the width, in units, of

pishuonlain [190]

Answer:

Step-by-step explanation:

$56=8*7\\8-7=1$ The width is smaller, so it is 7.

8 0

3 years ago

I need help I don’t understand and I need to show my work who would help me??

stich3 [128]

Answer: b

Step-by-step explanation:

In the last question, you wrote on a second equation "13x ...." kkk

Let's go:

We have to check each one answer in the following system:

x - 2y = 7

3x + 7y = 8

I can use the substituition method to solve this system...

x = 7 + 2y

3x + 7y = 8

3(7 + 2y) + 7y = 8

21 + 6y + 7y = 8

13y = 8 - 21

13y = -13

y = -1

x = 7 + 2.(-1)

x = 5

Finally, the correct answer is the second one (letter b).

5 0

3 years ago

Read 2 more answers

Gavin, Colin and Dan share some sweets in the ratio 1:4:1. Gavin gets 11 sweets. How many did Colin get?

djverab [1.8K]

If Gavin got 11 sweets, then the new ratio would be: 11:44:11

Colin got 44 sweets.

4 0

3 years ago