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3 years ago

I need help PLEASE!!!!

Mathematics

1 answer:

olchik [2.2K]3 years ago

5 0

The question is number 1

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A train travels 150 km in the same time that a plane covers 525 km. If the speed of the plane is 20 km per hr less than 4 times

babunello [35]

Answer:

Step-by-step explanation:

3 0

3 years ago

Find the product of 2x4(3x2 4x 1). 6x6 8x5 2x4 6x8 8x4 1 5x6 6x5 3x4 5x8 6x4 1.

Vlada [557]

Product of polynomials can be done by using distributive property of multiplication over addition. The needed product is: Option

<h3>What is distributive property of multiplication over addition?</h3>

Suppose a, b and c are three numbers. Then we have:

$a(b + c) = a\times b + a\times c$

(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)

<h3>What are like terms?</h3>

Those terms which have same variables raised with same powers.

For example, $5x^3$ and $x^3$ are like terms since variable is same, and it is raised to same power 3.

For example $x^3$ and $4x^4$ are not like terms as the variables are same but powers aren't same.

For the given case, the expression is $2x^4(3x^2 +4x +1)$

Using the distributive property of multiplication over addition, we get the product result as:

$2x^4(3x^2 +4x +1) = 6x^{4+2} + 8x^{4+1} + 2x^4 = 6x^6 + 8x^5 + 2x^4$

(when like terms are multiplied, powers are added of the variables (same variable) due to property $a^b \times a^c = a^{b+c}$ )

Learn more about product of polynomials here:

brainly.com/question/9106484

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2 years ago

16 POINTS!!!! WILL MARK BRAINLIEST!!!!!! PLEASE HELP!!!!!!!!!

RideAnS [48]

I cant help with too much because im 14 and in the 8 th grade but for part c the answer is 200 dollars. If you have 100 bracelets and your selling them for 2 dollars a bracelet the answer will be 200 hundred dollar profit.

hope this helps! :)

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3 years ago

What is slope of the line -3y=8x -5?

professor190 [17]

When finding the slope of a line you need to get it into the form y=mx+b, m being your slope. So if you divide your entire problem by -3 to isolate your y, you get y=-8/3x+5/3. This means that -8/3 will be your slope.

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3 years ago

When x is divided by x% of x the result is...

worty [1.4K]

Let's take an example number of 100. And you divide it by 100% of 100.
100% of 100 is 100. So when you divide 100 by 100, you get 1. Therefore, any number you plug in for x, you always get 1. Hope this helped.

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3 years ago