All categories

2 years ago

How do you do 16 * -4 by step by step

Mathematics

1 answer:

Grace [21]2 years ago

8 0

16 * -4 = -64

First, 16*4 = 64.

Second, a positive times a negative equals a negative.

Other justification:

16 x -4 means you add -4 to itself 16 times:

-4 + -4 + -4 + -4 + ... for a total of 16 times gives you -64.

You might be interested in

MATH HELP!!! 100PTS!!!

Lostsunrise [7]

Answer:

$x =\dfrac{20 +\sqrt{454}}{18}, \quad \dfrac{20 -\sqrt{454}}{18}$

Step-by-step explanation:

<u>Given functions</u>:

$p(x)=2x-4$

$r(x)=\dfrac{6x-1}{9x+1}$

Solve for p(x) = r(x):

$\begin{aligned}p(x) & = r(x)\\\implies 2x-4 & = \dfrac{6x-1}{9x+1}\\(2x-4)(9x+1)&=6x-1\\18x^2+2x-36x-4&=6x-1\\18x^2-40x-3&=0\end{aligned}$

As the found quadratic equation cannot be factored, use the Quadratic Formula to solve for x:

<u>Quadratic Formula</u>

$x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\quad\textsf{when }\:ax^2+bx+c=0$

Therefore:

$a=18, \quad b=-40, \quad c=-3$

Substitute the values of a, b and c into the <u>quadratic formula</u> and solve for x:

$\begin{aligned}\implies x & =\dfrac{-(-40) \pm \sqrt{(-40)^2-4(18)(-3)} }{2(18)}\\\\& =\dfrac{40 \pm \sqrt{1816}}{36}\\\\& =\dfrac{40 \pm \sqrt{4 \cdot 454}}{36}\\\\& =\dfrac{40 \pm \sqrt{4}\sqrt{454}}{36}\\\\& =\dfrac{40 \pm2\sqrt{454}}{36}\\\\& =\dfrac{20 \pm\sqrt{454}}{18}\end{aligned}$

Therefore, the solutions are:

$x =\dfrac{20 +\sqrt{454}}{18}, \quad \dfrac{20 -\sqrt{454}}{18}$

Learn more about quadratic equations here:

brainly.com/question/27750885

brainly.com/question/27739892

6 0

1 year ago

Which of the following questions represents a biased question? Do you plan to vote yes or no on Measure 2? Which do you prefer t

Naya [18.7K]

Last one is a biased question

8 0

3 years ago

Read 2 more answers

I NEED HELP ASAP PLS !!!

Ray Of Light [21]

Answer:

i hope this helps! :)

Step-by-step explanation:

1.) 130

2.) 56

3.) 5

4.) 10

5.) 24

6.) 91

6 0

3 years ago

Read 2 more answers

For the linear equation y = mx + b, what does b represent

notka56 [123]

Answer:

Initial Value / Starting Point

Step-by-step explanation:

Slope-intercept form of a linear equation is y=mx+b where m is the slope and b is the y-intercept, or the initial value.

7 0

2 years ago

Read 2 more answers

Suppose that a 2 by 10 rectangular grid of seats is filled with people. On the

weeeeeb [17]

688,747,536 ways in which the people can take the seats.

<h3></h3><h3>How many ways are there for everyone to do this so that at the end of the move, each seat is taken by exactly one person?</h3>

There is a 2 by 10 rectangular greed of seats with people. so there are 2 rows of 10 seats.

When the whistle blows, each person needs to change to an orthogonally adjacent seat.

(This means that the person can go to the seat in front, or the seats in the sides).

This means that, unless for the 4 ends that will have only two options, all the other people (the remaining 16) have 3 options to choose where to sit.

Now, if we take the options that each seat has, and we take the product, we will get:

P = (2)^4*(3)^16 = 688,747,536 ways in which the people can take the seats.

If you want to learn more about combinations:

brainly.com/question/11732255

#SPJ!

5 0

1 year ago