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irakobra [83]
3 years ago
12

Find the product (3s+6t)(s+t)

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0

Answer:

  3s^2 +9st +6t^2

Step-by-step explanation:

Each term of one factor is multiplied by all terms of the other factor and like terms are combined. This is an application of the distributive property.

  = 3s(s +t) +6t(s +t)

  = 3s^2 +3st +6st +6t^2

  = 3s^2 +9st +6t^2

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Zanzabum
The correct answer is b
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3 years ago
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A line has gradient 5.
MAVERICK [17]

Answer:

x = k - 3

Step-by-step explanation:

Given parameters:

  Gradient of the line = 5;

Coordinates; M(x, 8)

                       N(k, 23)

Solution:

If we use the expression for finding the slope of the line, we can solve this problem;

     Slope  = \frac{y_{2} - y_{1}  }{x_{2} - x_{1} }

    where

    x₁ = x    y₁ = 8

    x₂ = k    y₂ = 23

Input the parameters:

       5  = \frac{23 - 8}{k -x }

          15 = 5(k - x)

           3= k- x

           k - x = 3

 Express x in terms of k;

          -x = 3 - k

Multiply through by -1;

          x = -3 + k

          x = k - 3

7 0
3 years ago
A wire 22 cm long has a mass of 374 g. What is the mass of 13 cm of this wire?
taurus [48]

Answer:

<u>2</u><u>2</u><u>1</u><u> </u><u>g</u>

The up pinned pic is of inverse variation typed answer.. If u want word problem type answer here are the steps (EVEN IF THE STEPS ARE DIFFERENT ANSWERS REMAIN SAME)

Step-by-step explanation:

Mass of wire from 22cm = 374g

Mass of wire from 1 cm = 374÷22 = 17g

Mass of wire from 13 cm = 13×17 = <u>2</u><u>2</u><u>1</u><u> </u><u>g</u>

7 0
3 years ago
Karen reads 20 pages of her book in half hour if she reads about 3 hours of tha
creativ13 [48]

Answer:

120 pages

Step-by-step explanation:

1/2 h ↔ 20 pages

1 h ↔ 40 pages

3 h ↔ 120 pages


8 0
3 years ago
I don't think anyone will respond to a good attempt​
deff fn [24]

The answer is gonna be 15

7 0
3 years ago
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