3 years ago

A company make concrete bricks shaped like rectangular prisms.

1 answer:

3 0

Each brick contains 10*9*4=360 inches cubed. Since 1 brick = 360in³, we want to know how much 360in³ goes into 18000in³ (or how many bricks go into 18000in³). To do this, we simply divide 18000in³ by 360in³ to get 50 bricks

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If f(x) = 27 +3 and g(x) = x - 7, find (f - g)(x).

KatRina [158]

Answer:

(f - g)(x) = 37 - x

Step-by-step explanation:

(f - g)(x) = (27 +3) - (x - 7)

= 27 + 3 - x + 7

= 37 - x

3 0

3 years ago

Read 2 more answers

In the diagram shown, m 1= 50 and m2 = (2x-20)

stepladder [879]

Answer:

x = 35

Step-by-step explanation:

Since m1=m2 :

$2x - 20 = 50 \\ 2x = 70 \\ x = 35$

6 0

3 years ago

Evaluate the expression. (-3)^-2

Wewaii [24]

$~~(-3)^{-2}\\\\\\=\dfrac 1{(-3)^2}~~~~~~~~~~~~~~~~~~~~~~~~~;\left[k^{-n} = \dfrac 1{k^n},~~~ k \neq 0\right]\\\\\\=\dfrac 1{(-1)^2 \cdot 3^2}\\\\\\=\dfrac 1{1 \times 9}\\\\\\=\dfrac 19$