3 years ago

A model train uses a scale of 148. One car of the model train is 6 inches long

Mathematics

1 answer:

KengaRu [80]3 years ago

3 0

Answer:24

Step-by-step explanation:

Hope this helps

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Help i need to know whats the slope-intercept equation

rjkz [21]

Answer:

$y=\frac{-1}{3}x -7$

Step-by-step explanation:

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2 years ago

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The corresponding lengths of two cuboids are 12 and 3. What is the ratio of their volumes?

damaskus [11]

Answer:

I think 4:1 I'm not that sure tho

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2 years ago

The factorization below is missing two positive integers a and b. 6x^(3)+18x^(2)-240x=6x(x-a)(x+b) Factor the polynomial and the

Dvinal [7]

Answer:

a = 5

Step-by-step explanation:

Hello, please consider the following.

$6x^3+18x^2-240x=6x(x^2+3x-40)\\\\\text{** The sum of the zeroes is -3=-8+5 and the product is -40=-8*5. **}\\\\\text{** So, we can factorise. **}\\\\6x^3+18x^2-240x=6x(x^2+3x-40)=6x(x^2+8x-5x-40)\\\\=6x(x(x+8)-5(x+8))\\\\\large \boxed{=6x(x+8)(x-5)}$

So, a = 5.

Thank you.

7 0

3 years ago

Solve 5x^2 - 7x+2 -0 by completing the square. What are the solutions?

trapecia [35]

5x² - 7x + 2 = 0

5(x² - 7/5 x) + 2 = 0

5(x² - 7/5 x + 49/100 - 49/100) + 2 = 0

5(x² - 2 • 7/10 x + (7/10)²) - 49/20 + 2 = 0

5(x - 7/10)² - 9/20 = 0

5(x - 7/10)² = 9/20

(x - 7/10)² = 9/100

x - 7/10 = ± √(9/100)

x - 7/10 = ± 3/10

x = 7/10 ± 3/10

x = 10/10 = 1 or x = 4/10 = 2/5

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2 years ago

Expression of "Eight less than half the sum of 4 and k” into symbol

jolli1 [7]

Answer:

$\frac{4+k}{2} -8$

Step-by-step explanation:

We're going to have to work backwards.

The sum of 4 and k is $4+k$ .

Half is simply that divided by 2.

$\frac{4+k}{2}$

Now, we'll subtract 8 from it.

$\frac{4+k}{2} -8$

Bam!

7 0

2 years ago