3 years ago

The quotient of eight and a number h is written as

Mathematics

2 answers:

Aleonysh [2.5K]3 years ago

8 0

The quotient of 8 and h is written as 8/h

BARSIC [14]3 years ago

8 0

8/h quotient is to divide so you are dividing by h

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The water level in a swimming pool decreases from 60 inches to 58.25 inches in one week.

Keith_Richards [23]

I think it’s gonna be A.

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3 years ago

11. The completion of a chemical reaction is expressed by the equation y = 300 - 4x - XP, where y is

alina1380 [7]

Answer:

The reaction ca occur at 10 degree Celsius or -14 degree Celsius.

Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

$y = 300 - 4x -x^2$

where y is the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

$160 = 300 - 4x -x^2\\x^2 + 4x - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14$

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

5 0

3 years ago

Let [n] = 1 if n is odd and 0 if n is even, for all positive integer n. if [n] * [n+8] = 0, then what is one possible value of n

astra-53 [7]

$[n][n+8]=0$

if either or both of $[n]$ and $[n+8]$ are 0, i.e. if one or both of $n$ and $n+8$ are even. But both will be even if $n$ is even, and odd otherwise, so any even $n$ will be a solution, e.g. $n=2$ .

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3 years ago

What is the value of the discriminant of the quadratic equation −1 = 5x2 −2x, and what does its value mean about the number of r

Zepler [3.9K]

For the equation:
-1=5 x^2 - 2 x
5 x^2 - 2 x + 1 = 0, then we substitute: a=5, b=-2, c =1
to discriminant formula: D= b^2 - 4 a c = (-2)^2 - 4 * 5 * 1 = 4 - 20 = - 16
Answer:
The discriminant is equal to -16 which means the equation has no real number solutions.

7 0

3 years ago

Read 2 more answers

To prepare for a bake-off, Lee used 640 grams of flour each day for 4 weeks. How many kilograms did Lee use in those 4 weeks?

dangina [55]

1week = 7days so
4weeks = 28 days
So 28 x 640 = 17920

1000grams = 1kg

17920 divide 1000 =17.92

Lee uses 17.92kg in those 4weeks

8 0

3 years ago