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posledela
3 years ago
13

How do you tell wether the ratios form a proportion 8/24 5/15

Mathematics
1 answer:
NeTakaya3 years ago
3 0
You can cross multiply if it is equal to the same number it would be proportional.
8/ 24 5/15      8*15 = 5*24          120 = 120
Since they both sides are equal this proportion should be proportional.

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Show me how to solve step by step please
andrew-mc [135]

Answer:

188

Step-by-step explanation:

88 + 6= 94

94 + 94 = 188

188 divided by 2 = 94

94 - 6 = 88

88 was how much Paula paid

8 0
3 years ago
A line passes through the point (-4, -2) and has a slope of -5/2. Write an equation in slope- intercept form for this line.
kirill115 [55]

Answer:

<h2>           y = -⁵/₂x - 12 </h2>

Step-by-step explanation:

The point-slope form of the equation is y - y₀ = m(x - x₀), where (x₀, y₀) is any point the line passes through and m is the slope:

m = -⁵/₂

(-4, -2)    ⇒   x₀ = -4,  y₀ = -2

The point-slope form of the equation:

y + 2 = -⁵/₂(x + 4)

So:

y + 2 = -⁵/₂x - 10         {subtract 2 from both sides}

y = -⁵/₂x - 12             ←  the slope-intercept form of the equation

5 0
3 years ago
A fish is 5 feet below the surface of a lake. If its position can be recorded as -5 feet what would the position of 0 represent
eduard
The surface of the lake.
6
5
4
3
2
1
0   Here is the surface of the lake
-1
-2
-3
-4
-5 Here is the fish  
-6
5 0
3 years ago
A box of 10 bars of soap costs $10.88, while the same brand with 4 more bars costs $17.62. Which is the better buy? Round your a
horsena [70]

The box of 10 is a better buy because each bar of soap is worth $1.08 instead of $1.26 that you would pay for the box of 14.

7 0
3 years ago
Determine the value of K that would make this expression a perfect square
Mumz [18]

Answer: k=9/4

Step-by-step explanation: We can do this by finding a number that adds up to 3 when multiplied by 2. The best way to do this is to use ((b^2)/4) which can usually find you the number for a perfect square based on b, which we have. So, 3^2 / 4 =9/4, meaning k=9/4. We can check:

>x^2 +3x +9/4

> (x+3/2)(x+3/2)

Perfect square.

4 0
3 years ago
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