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defon
4 years ago
6

The flower color of bigleaf hydrangeas is determined by the soil's pH. A gardener growing blue hydrangeas believes that lime may

be leaching out of a nearby sidewalk and increasing the pH of the soil. The gardener measures the hydrogen ion concentration and finds it to be 0.0000006 moles per liter. What is the pH and what color are his colors likely to be?
the blue- 5 the purple - 5.5 the pink - 6
Mathematics
1 answer:
barxatty [35]4 years ago
8 0
PH is calculated by the negative logarithm of the hydrogen concentration in a solution. Therefore, the pH in this case is:

pH = -log (0.0000006)
pH = 6.22

Therefore the correct answer among the choices is the last option, pH of 6 with a color pink.
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Jack bought a mug for 10$ and then sold it and got 20% profit. how much did jack sell his mug for?
alexgriva [62]

Answer:

20% of 10 is 2    

10 + 2 = 12   ye got 2 dollars back.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What polynomial has roots of −6, 1, and 4?
tester [92]

Answer:

The correct option is C.

Step-by-step explanation:

polynomial has roots of −6, 1, and 4.

We can write it as:

(x+6)(x-1)(x-4)

Now multiply the terms:

First multiply first and second bracket:

{x(x+6)-1(x+6)}(x-4)

{(x^2+6x-x-6)} (x-4)

Solve the like terms:

{(x^2+5x-6)}(x-4)

x(x^2+5x-6) -4(x^2+5x-6)

x^3+5x^2-6x-4x^2-20x+24

Solve the like terms:

x^3+x^2-26x+24

Hence it is proved that the correct option is C....

6 0
3 years ago
We all hate to bring change to a store. By using random numbers, we can eliminate the need for change and give the store and the
Sunny_sXe [5.5K]

Answer:

Round off to closest value.

Step-by-step explanation:

In order to remove the requirement for change, every time the client buys a product for $0.20 the random number that lies between 0 and 1 would be produced also the same would be rounded to the closest value i.e. 0 or 1. In the case when 0 arise so the customer would not have to pay any amount but if 1 arise so the customer have to pay $1. So this type of method would remove the requirement for a minor change

6 0
3 years ago
REPLY BACK PLEASE.. HAVE NO CLUE AT ALL
melisa1 [442]
Go on a calculator 
cosine=Adjacent/Hypotenuse
Cosine=6/ 3 the square root of 5
reduce to 1/square root of 5 which is your answer...so the answer is B)

Hope this helps!!

8 0
3 years ago
Read 2 more answers
What are ways using coordinate geometry, that I could determine that this is a trapezoid?
NemiM [27]

One method to see it's a trapezoid is to find the slope of lines BC and AD.

The slope formula is

m = (y2-y1)/(x2-x1)

You should find that BC and AD both have the same slope (of -1), so that means the lines are parallel. That proves we have a trapezoid.

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

To prove this trapezoid is isosceles, you can use the distance formula

d = \sqrt{ \left(x_1-x_2\right)^2 + \left(y_1-y_2\right)^2}

to find the lengths of AB and CD (the two non-parallel sides). You should find that AB = CD.

Because AB and CD are horizontal and vertical respectively, this means you can simply count out the spaces to find that AB and CD are 3 units each. For any other rotated version of this trapezoid, use the distance formula instead.

3 0
3 years ago
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