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Butoxors [25]
3 years ago
10

What is the value of r? 1.2r−1 1.3r=40

Mathematics
1 answer:
Alexus [3.1K]3 years ago
4 0
  the value is 
1.2r-11.3r=40

-10.Ir=40
r=40/-10.1
r=-0.2525
 
hope this helps :):):)
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An integer is three more than another integer. Twice the larger integer is two less
Amiraneli [1.4K]

Answer:

The integers are 4 and 7 or -2 and 1.

Step-by-step explanation:

You can make a system of equations with the description of the two integers.

1. x = y + 3

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The simplest and the fastest way to solve this system in this case is substitution. You can substitute x for y + 3 in the second equation.

1. x = y + 3

2. 2(y + 3) + 2 = y^2

Now simplify and solve the second one. For convenience, I will just disregard the first equation for now.

2y + 6 + 2 = y^2

y^2 - 2y - 8 = 0

You can factor this equation to solve for y.

(y - 4) (y + 2) = 0

y = 4, y = -2

Now we can substitute the value of y for x in the first equation.

x = 7, x = 1

3 0
3 years ago
What is the value for f(x)4^2x -100 when x=2 ?<br><br> (the ^2x is a exponent)
PolarNik [594]

Answer:

156

Step-by-step explanation:

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Let x =2

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3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%7B3%7D%5E%7Bx%20%2B%202%7D%20%20-%20%20%7B3%7D%5E%7Bx%7D%20%20%3D%20%20%5Cfrac%7B8%7D%7B9%
ser-zykov [4K]

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3^{x + 2} - 3^{x} = \frac{8}{9}

⇒ 8(3^{x}) = \frac{8}{9}

⇒ 3^{x} = \frac{1}{9}   <em>multiplied both sides by 8</em>

⇒3^{x} = \frac{1}{3^{2} }

⇒ 3^{x} = 3⁻²

⇒ x = -2

Answer: x = -2

6 0
3 years ago
Select the postulate that specifies the minimum number of points in space
Tanzania [10]
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6 0
3 years ago
Jack has 3/4 cup of Tide left in the bottle. Each load of laundry requires 1/6 cup of Tide. How many loads of laundry can Jack w
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Answer:

4 1/2 loads

Step-by-step explanation:

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7 0
3 years ago
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