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Anuta_ua [19.1K]
3 years ago
7

19 - 4x + 15x. Please Help And Explain How To Do This.

Mathematics
1 answer:
Vlad1618 [11]3 years ago
3 0

Answer:

Step-by-step explanation:

19-4x+15x  combine like terms

19+11x

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The population of Mathloversville is given by the equation P=38e^0.095t , where t is the number of years from now. How long will
lys-0071 [83]

Answer:

Approximately 107years

Step-by-step explanation:

Given the population of Mathloversville modelled by the equation P=38e^0.095t where t is the number of years from now.

To find the time it will take the population to reach 1million from now, we will substitute P = 1,000,000 into the equation given

1,000,000 = 38e^0.095t

Dividing both sides by 38

1,000,000/38 = e^0.095t

Taking the ln of both sides

ln(1,000,000/38) = ln e^0.095t

ln26,315.79 = 0.095t

10.18 = 0.095t

t = 10.18/0.095

t = 107.16years

It will take approximately 107years for the population to reach 1million

5 0
4 years ago
A publisher wants to figure out how thick their new book will be. The book has a front cover and a back cover, each of which hav
denpristay [2]

Answer:

1in. x 2 + 1in. = 3in.

Step-by-step explanation:

5 0
3 years ago
1/5(15b-7)=3b-9 what is it I need help
jonny [76]
\frac{1}{5}(15b-7)=3b-9\ \ \ \ \ \ \ \ \ |\cdot5\\\\15b-7=15b-45\\\\15b-15b=-45+7\\\\0\neq-38\\\\There\ is\ no\ solution.
3 0
3 years ago
Find the zeros for (x+2)(x-4)
Montano1993 [528]

Answer:

<h2>x = -2 or x = 4</h2>

Step-by-step explanation:

The zeros:

(x + 2)(x - 4) = 0 ⇔ x + 2 = 0 or x - 4 = 0

x + 2 = 0          <em>subtract 2 from both sides</em>

x = -2

x - 4 = 0          <em>add 4 to both sides</em>

x = 4

7 0
3 years ago
7x + 2y = -7 <br> 11x + 5y = 2
Marat540 [252]

Answer:

x=−3 and y=7

Step-by-step explanation Solve: 7x+2y=−7for x:

7x+2y=−7

7x+2y+−2y=−7+−2y(Add -2y to both sides)

7x=−2y−7

7x

7

=

−2y−7

7

(Divide both sides by 7)

x=

−2

7

y−1

------------

−2

7

y−1forxin11x+5y=2:

11x+5y=2

11(

−2

7

y−1)+5y=2

13

7

y−11=2(Simplify both sides of the equation)

13

7

y−11+11=2+11(Add 11 to both sides)

13

7

y=13

13

7

y

13

7

=

13

13

7

(Divide both sides by 13/7)

y=7

------------------------

Substitute7foryinx=

−2

7

y−1:

x=

−2

7

y−1

x=

−2

7

(7)−1

x=−3(Simplify both sides of the equation)

7 0
3 years ago
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