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Korolek [52]
3 years ago
14

Which of the following is true? a. A hypothesis is a measure, such as price or quantity, that can take on different values at di

fferent times. b. To test a hypothesis is the last step under the scientific method of studying economic problems. c. To identify a question and define the relevant variables is the last step under the scientific method. d. Assumption refers to a theory about how key variables relate to one another.
Mathematics
1 answer:
vova2212 [387]3 years ago
8 0

Answer:

Step-by-step explanation:

D

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Show that 2/4-x = 10/4+x<br><br> is equivalent to 12x = 32 for all values of x not equal to 4 or -4
Anika [276]

Answer:

See proof below

Step-by-step explanation:

Given the expression 2/4-x = 10/4+x

Cross multiply

10(4-x) = 2(4+x)

10(4) - 10x = 2(4)+ 2x

40 - 10x = 8 + 2x

-10x - 2x = 8 - 40

-12x = -32

Multiply both sides by -1

-1(-12x) = -1(-32)

12x = 32

This shows the required expression

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3 years ago
What is a double bond?
tatyana61 [14]
C two electrons with two atoms! <3
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3 years ago
You can fly from seattle to boise for $137.50, from Boise to Witchita for $92.50 and from Witchita to Austin for $162.50. Use me
natulia [17]
I guess in this equation we are assuming you are changing flights. So you would add 137.50+92.50+162.50 which equals  $392.50
7 0
4 years ago
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Solve the following equation. Express your answer as an integer, simplified fraction, or decimal rounded to two decimal places.
Andrej [43]
The width of a rectangle is going to be equal on both sides, as they’re parallel in a rectangular shape. We know the width is 86 yards, and we have two lots of these, therefore 86 multiplied by 2 is equal to 172 yards.

We still have two more sides, but once again, because this is a rectangle, those sides must be equal. Therefore if we subtract the 172 yards we know from the total perimeter of 438 yards we will end up with an answer of 266 yards. This figure is divided by two because we have a length on either side of the perimeter. Therefore the answer is 133 yards.

Hope this helps!
6 0
3 years ago
Find the circumference of a circle r=9
kvasek [131]

Answer:

254.34

Step-by-step explanation:

You first have to know the formula which is

c = \pi \:  {r}^{2}

You multiply 9 by 9 which gives you 81.

c = \pi \times 81

pi equals 3.14

so 3.14 × 81 = 254.34

3 0
3 years ago
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