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Alex17521 [72]
3 years ago
15

Find the product (-3)(8)

Mathematics
2 answers:
snow_lady [41]3 years ago
7 0

Answer:

-24

Step-by-step explanation:

This is a simple multiplication problem. 8 times 3 is 24, and since one of the numbers is negative, the product (answer in multiplication) will be negative.

In multiplication and division of integers (positive and negative numbers), if the numbers have the same signs, the answer is ALWAYS positive, and if the numbers have different signs, the answer is ALWAYS negative.

arsen [322]3 years ago
7 0

Answer: -24

Step-by-step explanation: To multiply (-3)(8), it is important to understand that a negative times a positive is a negative so (-3)(8) is -24.

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Hyperloop, a new mode of travel, aims to reach a speed of 170 m/s . This is 50% less than the speed of sound.
mariarad [96]

Answer:

The speed of sound is 340\ m/s

Step-by-step explanation:

Let

x-----> the speed of sound

we know that

50\%=50/100=0.50

so

0.50x=170

solve for x

x=170/0.50=340\ m/s

5 0
4 years ago
What is the value of the rational expression below when x is equal to 4? x-12/x-8
Firlakuza [10]

Answer:

When x=4 we get the value of the given expression is

\frac{x-12}{x-8}=2

Step-by-step explanation:

Given rational expression is \frac{x-12}{x-8}

To find the value of the given rational expression \frac{x-12}{x-8}

when x is equal to 4 :

That is the value of the given rational expression \frac{x-12}{x-8}

when x=4 :

\frac{x-12}{x-8}

Put x=4 in the above rational expression we get

\frac{4-12}{4-8}

=\frac{-8}{-4}

=\frac{8}{4}

=2

Therefore  when x=4 we get the value of the given expression is

\frac{x-12}{x-8}=2

7 0
3 years ago
Two equations are given below:
Evgesh-ka [11]

The solution to the set of equations is (0,2).

Reasoning:

m + 4n = 8 -> 0 + 4(2) = 8

m = n - 2 -> 0 = 2 - 2

6 0
3 years ago
I’ve been trying on this question but in struggling. please help me
snow_lady [41]

Answer:

x \geq 15

Step-by-step explanation:

Solving an inequality is very similar to solving an equation, one uses inverse operations. The only major difference between the two is that when one multiplies or divides an inequality by a negative number, one must remember to flip the inequality sign to ensure that the inequality remains true. In this situation, such a rule does not come into play.

\frac{x}{5} - 8 \geq -5

Inverse operations,

\frac{x}{5}-8 \geq -5\\              +8\\\\\frac{x}{5} \geq 3\\*5\\\\x \geq 15

5 0
3 years ago
Solve the equation. Explain each step and identify the property used to reach each step.
Tom [10]

To isolate x, we will first subtract 0.8 from both sides.

0.6x + 0.8 = 1.4

-0.8 -0.8

0.6x = 0.6

Now all we have to do is divide both sides by 0.6, because it is the number besides x.

0.6x/0.6 = 0.6/0.6

x = 1

So you get the answer of x = 1.

7 0
3 years ago
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