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3 years ago

Multiplying rational numbers (-7) (-2) SHOW WORK PLEASE

Mathematics

1 answer:

lyudmila [28]3 years ago

3 0

The answer is 14 because a negative number multiplied by another negative number is positive. So (-7)*(-2) is 14.

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Hope you have a great Valentine's Day!!!

bagirrra123 [75]

Answer:

It is B. Commutative Property of Addition. I selected d from the other answer and it was wrong, just trust me it b. Commutative.

Hope this helps you.

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2 years ago

2,750 milliliters into gallons.

yan [13]

Answer:

2,750 milliliters into gallons=0.72647314

Step-by-step explanation:

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1 year ago

Read 2 more answers

Which of the following equations represents the line that is graphed on the coordinate grid below?

tatiyna

Answer:

y = -(1/3)x + 2

Step-by-step explanation:

Keeping in mind the equation of a line: y = mx + c

Notice three discernible points on the graph: (0,2), (3,1), (6,0).

The first and last points mentioned represent the intercept on y-axis and the intercept on x-axis respectively.

Therefore, when x = 0, y = 2. And 2 = m(0) + c

c = 2

Also, when y = 0, x = 6. And 0 = 6m + 2

6m = -2. And m = -(2/6) = -(1/3)

Therefore, y = -(1/3)x + 2

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2 years ago

What was the value of 342000 - 9%=

lutik1710 [3]

Answer:

12641680.

Step-by-step explanation:

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3 years ago

Solve 8sin(pi/6 x) = 4 for the four smallest positive solutions

ryzh [129]

Simplify the given expression as shown below

$\begin{gathered} 8sin(\frac{\pi}{6}x)=4 \\ \Rightarrow sin(\frac{\pi}{6}x)=\frac{4}{8}=\frac{1}{2} \\ \Rightarrow sin(\frac{\pi}{6}x)=\frac{1}{2} \end{gathered}$

On the other hand,

$\begin{gathered} sin(y)=\frac{1}{2} \\ \end{gathered}$

Solving for y using the special triangle shown below

Thus,

$\begin{gathered} \Rightarrow y=30\degree\pm360\degree n=\frac{\pi}{6}\pm2\pi n \\ and \\ y=150\degree+360\degree n=\frac{5\pi}{6}+2\pi n \end{gathered}$

Then,

$\begin{gathered} \Rightarrow\frac{\pi}{6}x=y \\ \Rightarrow\frac{\pi}{6}x=\frac{\pi}{6}+2\pi n \\ \Rightarrow x=1+12n \\ and \\ \frac{\pi}{6}x=\frac{5\pi}{6}+2\pi n \\ \Rightarrow x=5+12n \end{gathered}$

The two sets of solutions are

$x=1+12n,5+12n$ <h2>Then, the four smallest positive solutions are</h2> $\Rightarrow x=1,5,13,17$ <h2>The answers are 1,5,13,17</h2>

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10 months ago