2 years ago

7. What is the slope of the line that passes through (12, 10) and (11, 15)?

Mathematics

1 answer:

amid [387]2 years ago

5 0

Answer:

-5

Step-by-step explanation:

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Determine whether the function

makkiz [27]

The right answer is even

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2 years ago

Which of the following is an extraneous solution of (45-3x)^1/2=x-9?

Iteru [2.4K]

Answer:

C. x =3

Step-by-step explanation:

Extraneous solution is that root of a transformed equation that doesn't satisfy the equation in it's original form because it was excluded from the domain of the original equation.

Let's solve the equation first

$\sqrt{45-3x} = x-9\\Taking\ square\ on\ both\ sides\\{(\sqrt{45-3x})}^2 = {(x-9)}^2\\45-3x = x^2-18x+81\\0 = x^2-18x+81-45+3x\\x^2-15x+36 = 0\\x^2-12x-3x+36 = 0\\x(x-12)-3(x-12) = 0\\(x-3)(x-12)\\x-3 = 0\\=> x =3\\x-12 = 0\\x = 12\\We\ will\ check\ the\ solutions\ one\ by\ one\\So,\\for\ x=3\\\sqrt{45-3(3)} = 3-9\\\sqrt{45-9} = -6\\\sqrt{36}= -6\\6\neq -6\\For x=12\\\sqrt{45-3(12)} = 12-9\\\sqrt{45-36} = 6\\\sqrt{36}= 6\\6=6$

Hence, we can conclude that x=3 is an extraneous solution of the equation ..

3 0

3 years ago

A grocer needs to mix raisins at $2.00 a pound with granola at $3.25 a pound to obtain 10 pounds of a mixture that costs $2.50 a

blagie [28]

Four lbs of granola = 13 lbs
Six lbs of raisins = 12 lbs

13+12=25

25/$2.50=10

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2 years ago

20 points!! Please look at the picture below

Thepotemich [5.8K]

Answer:

I believe the answer is D.

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2 years ago

Find the mean and mode for this set of data. 5,6,8,3,5,7,4,11,5,7

katrin [286]

The mode is what number occurs most often. So in this set, the number that occurs most often is 5.

Mode = 5

The mean is the average of all the numbers in the set. To find the average of numbers, you add them all up then divide by how many numbers there are in the set. 5 + 6 + 8 + 3 + 5 + 7 + 4 + 11 + 5 + 7 = 61. 61 divided by 10 = 6.1 The answer is 6.1

Mean = 6.1

Good luck, my guy!

3 0

2 years ago

Read 2 more answers