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2 years ago

10x^3 - 6x^2 + 50x - 30

Mathematics

2 answers:

Arlecino [84]2 years ago

3 0

Answer:

Step-by-step explanation:

nadezda [96]2 years ago

3 0

Answer:

Factored :

2 (5x-3)(x^2+5)

Roots :

$x=\frac{3}{5} , i\sqrt{5} , -i\sqrt{5} \\$

Step-by-step explanation:

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Explain how you can identify a non proportional relationship?

noname [10]

Simply simplify the ratios/fractions into their simplest fraction form and divide the numerator by the denominator. If they are equal, they are in fact proportions, if not, they aren't

5 0

3 years ago

2067 Supp Q.No. 2a Find the sum of all the natural numbers between 1 and 100 which are divisible by 5. Ans: 1050

Alborosie

Answer:

1050

Step-by-step explanation:

Natural Numbers are positive whole numbers. They aren't negative, decimals, fractions. We can just divide 5 into 100 to find how many natural numbers go up to 100 and just add them but that is just to much.

There is a easier method.

E.g: Natural Numbers that are divisible by a Nth Number. is the same as adding the Nth Numbers to a multiple of that Nth Term. For example, let say we need to find numbers divisible by 2. We know that 4 is divisible by 2 because 4/2=2. We can add the Nth numbers which is 2 to 4. 4+2=6. And 6 is divisible by 2 because 6/2=3. We can call this a arithmetic series. A series which has a pattern of adding a common difference

Back to the problem, we can use the sum of arithmetic series formula,

$y = x( \frac{z {}^{1} + {z}^{n} }{2} )$

Where x is the number of terms in our sequence. Z1 is the fist term of our series. ZN is our last term. And y is the sum of all of the terms

The first term is 5, the numbers of terms being added is 20 because 100/5=20. The last term is 100.

$y = 20( \frac{5 + 100}{2} )$

$y = 20( \frac{105}{2} )$

$y = 1050$

5 0

2 years ago

Compare -15/4 and -3 3/8

muminat

Answer:

-15/4 > -3 3/8

Step-by-step explanation:

I converted -15/4 into a mixed number with a denominator of 8. First, I made it a mixed number (-3 1/4) and then I converted it to eighths (-3 2/8). Compared to -3 3/8, -15/4 is larger.

4 0

2 years ago

What is the equation of the line that passes through the point (–2,7) and has a slope of zero?

scZoUnD [109]

Answer:

y = 7

Step-by-step explanation:

Given:

x1 = -2

y1 = 7

slope (m) = 0

y - y1 = m ( x - x1 )

y - 7 = 0 ( x - (-2) )

y - 7 = 0 ( x + 2 )

y - 7 = 0

y = 7

4 0

1 year ago

What is the first step to solve this equation: -3x + 12 = -40

ElenaW [278]

Answer:

Your supposed to cancel out 12 on both sides so u subtract 12 on both sides so the equation would be

-3x= -52

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers