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3 years ago

16.1 – (–14.7) explain your work Please help

Mathematics

2 answers:

bekas [8.4K]3 years ago

8 0

Answer:

1.4 or 30.8

Step-by-step explanation:

1.4 is for regular math because it's basically 16.1 - 14.7

30.8 is for KCO or Keep Change Opposite (Beginners math)

Basically it would turn the equation into 16.1 + 14.7

You can use either but if you aren't sure ask your teacher about the strategy.

Hope this helps and if not tell me your strategy.

IrinaVladis [17]3 years ago

7 0

1.4 you subtract normally it as if you were doing whole numbers

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PLEASE HELP

kotykmax [81]

Answer:

$\displaystyle y=-\frac{1}{2}x+\frac{11}{2}$

Step-by-step explanation:

<u>Equation of the Line</u>

A line of slope m and y-intercept b can be expressed by the equation:

$y=mx+b$

The given line has the equation:

$8x-4y=-24$

Let's express it in the correct form:

$-4y=-24-8x$

Dividing by -4

$y=2x+6$

The slope of this line is m1=2. To find the slope m2 of a line perpendicular to this one, we use the following equation:

$m_1.m_2=-1$

Solving for m2:

$\displaystyle m_2=-\frac{1}{m_1}$

$\displaystyle m_2=-\frac{1}{2}$

The required equation has the form:

$\displaystyle y=-\frac{1}{2}x+b$

To find b, we use the point (3,4) through which the line passes:

$\displaystyle 4=-\frac{1}{2}(3)+b$

$\displaystyle b=4+\frac{3}{2}=\frac{11}{2}$

Thus the equation of the line is:

$\boxed{\displaystyle y=-\frac{1}{2}x+\frac{11}{2}}$

5 0

3 years ago

slader How many partitions of the set {1, 2, 3, . . . , 100} are there such that there are exactly three parts and elements 1, 2

My name is Ann [436]

Answer:

$3^{97}$ partitions.

Step-by-step explanation:

As we know if we have x number of elements we can arrange them in x! ways.

here we have 100 elements so we can arrange them in 100! ways.

Now if we have exactly three parts and 1,2 and 3 are in different parts then let consider 1 goes to part 1, 2 goes to part 2, and 3 goes to part 3. For the remaining 97 elements, we have three options for each element, thus we can arrange the remaining 97 elements in $3^{97}$ ways/partitions.

each of these partition will contain only three elements.

7 0

4 years ago

The score on a trivia game is obtained by subtracting the number of incorrect answer from twice the number of correct answer. If

brilliants [131]

Answer:

The player answer correctly 30 questions

Step-by-step explanation:

First we have to develop the information that gives us as 2 equations

x = correct answer

y = incorrect answer

z = score = 40

h = total answer = 50

2x - y = z x + y = h

2x - y = 40 x + y = 50

we clear the x of one equation and replace the value of x in the other equation

x = 50 - y

2x - y = 40

2(50 - y) - y = 40

100 - 2y - y = 40

-3y = 40 -100

y = -60/-3

y = 20

x = 50 - y

x = 50 - 20

x = 30

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3 years ago

The expression c- 0.25c can be used to find the cost of an item on sale for 25% off. Which expression below is equivalent to c-

Usimov [2.4K]

Answer:

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MaRussiya [10]

It is the 3rd option from the bottom of the 2nd collum.The numbers switch places when the letter changes (from b to b') but they remain the same.

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3 years ago