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3 years ago

Check my answer!

1 answer:

8 0

Factor out a 6

6 / 6x^2 = x^2
6 / -12x = -2x
6 / -18 = -3

6(x^2 - 2x - 3)

Multiply the first term to the last
1 x -3 = -3

(a x b) = -3
(a + b) = -2 (middle term)

(1 x -3) = -3
(1 + -3) = -2

Plug them in by replacing -2x and simplify

6(x^2 - 1x - 3x - 3)
6((x^2 - 1x) - (3x - 3))
6(x(x - 1) - 3(x - 1))
6(x - 3)(x - 1)

Or in this case, 6(x - 1)(x - 3)

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The temperature, HH, in degrees Celsius, of a cup of coffee placed on the kitchen counter is given by H=f(t)H=f(t), where tt is

hjlf

Answer:

A) f'(t) is negative

B) degc/min

c ) At 20 minutes after the coffee was put on the counter its temperature is 56degc and will decrease by about 1.125 in the next 45 seconds

Step-by-step explanation:

A ) f'(t) is Negative because as the cup of coffee is placed on the counter there is loss of heat from the cup of coffee to the surrounding as t increases hence f'(t) is negative

B ) The units of f'(20) = degc/min

C) At ║f'(20)║ = 1.5 and f'(20) = 56

║f'(20)║ = 1.5 represents the rate of change of temp every 20 minutes = 1.5

therefore after 45 seconds = 3/4 mins. change in temp = (3/4 * 1.5) = 1.125

At 20 minutes after the coffee was put on the counter its temperature is 56degc and will decrease by about 1.125 in the next 45 seconds

3 0

3 years ago

I WILL Give Brainlist !! ASAP Please Help its A Math Question geometry

Vesna [10]

The diagram which the locus of all the points in the plane that are 3cm away from a single point A is Option B

<h3>What is a locus?</h3>

A locus is defined as a set of points, which satisfies a given condition or situation for a shape or a figure.

It is important to note that:

The locus of points in a plane that are all the same distance from a single point is a circle with radius, r
A circle is the locus of all the points in the plane which are equidistant from the points in that plane
The locus of all points equidistant from the vertices of a square is a straight line that is perpendicular to the plane of the square, through the center of the square

We can see that for a circle, the locus of all points in the plane is the radius equidistant from that line.

Thus, the diagram which the locus of all the points in the plane that are 3cm away from a single point A is Option B

Learn more about locus here:

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2 years ago

How to remove the parentheses from − (2w−u−5)

kumpel [21]

Answer:

- 2w + u + 5

Step-by-step explanation:

- (2w - u - 5 ) ← distribute terms in parenthesis by - 1

= - 2w + u + 5

8 0

2 years ago

Read 2 more answers

The sum of two number is 19, and their difference is 1. Let x be the larger number and y be the smaller number. Write the first

xz_007 [3.2K]

X= 10 y= 9 the difference between the two numbers is one and they equal 19

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4 years ago

AVID class is having a bake sale, and they are selling cookies and cake to raise money for a field trip. A bag of

ella [17]

The situation can be represented by expression 3x + 5y = 900

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let x represent the number of cookies and y represent the number of cake slice.

The class wants to raise $900.Hence:

3x + 5y = 900

Find out more on equation at: brainly.com/question/1214333

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3 years ago