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4 years ago

7x + 2y + 5 - 5x + Oy - 1 Simplify expresson

Mathematics

1 answer:

frozen [14]4 years ago

3 0

Answer:

To do this you have to combine like terms. For example, 7x and -5x.

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Are these equivalent 3r-18 and 3(r-6)

OLEGan [10]

Yes 3 times r is 3r and 3 times -6 is -18

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4 years ago

Which expresion has a value grater than 4 3 ?

ruslelena [56]

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Step-by-step explanation:

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3 years ago

Karen wants to string lights around the edge of her deck. The shape and dimensions of her deck are shown in the diagram

Marianna [84]

She would need 70 feet of lights

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3 years ago

What is the probability that the person is male or divorced

sukhopar [10]

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3 and one third %

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Step-by-step explanation:

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3 years ago

The population of a heard of cattle numbered was 5000 to begin with and was 10,000 after 10 years. If the population was growing

Lapatulllka [165]

Answer:

$r=0.0718$ . The closest value from your given choices is C)r=0.69

Step-by-step explanation:

To solve this we are using the standard exponential growth equation:

$f(t)=A(1+r)^t$

where

$f(t)$ is the final population after $t$ years

$A$ is the initial population

$r$ is the growth rate in decimal form

$t$ is the time in years

We know from our problem that the initial population is 5000, the final population is 10000, and the time is 10 years, so $A=5000$ , $f(t)=10000$ , and $t=10$ .

Let's replace the values and solve for $r$ :

$f(t)=A(1+r)^t$

$10000=5000(1+r)^{10}$

Divide both sides by 5000

$\frac{10000}{5000} =(1+r)^{10}$

$2=(1+r)^{10}$

Take root of 10 to both sides

$\sqrt[10]{2} =\sqrt[10]{(1+r)^{10}}$

$\sqrt[10]{2} =1+r$

Subtract 1 from both sides

$\sqrt[10]{2}-1=r$

$r=\sqrt[10]{2}-1$

$r=1.0718-1$

$r=0.0718$

We can conclude that the growth rate of our exponential equation is $r=0.0718$ . The closest value from your given choices is C)r=0.69

3 0

4 years ago