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prohojiy [21]
2 years ago
12

Which expression is equivalent to –3.6x + 48?

Mathematics
1 answer:
Anna11 [10]2 years ago
7 0

Answer:

D. -1.2(3x-40)

Step-by-step explanation:

Multiply -1.2 x 3x and -1.2 x -40.

-1.2 x 3x= -3.6x

-1.2 x -40= 48 (two negatives cancel each other out, so it will be +48)

= -3.6 +48.

You can also automatically eliminate B. and C. because multiplying the  -4 within the perenthesis would not give you 48.

A. says (3x + 40), which would give us a negative 48.

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PLEASE HELP!! WILL GIVE Points Using the known angle, what side is known? What side is unknown? Use opposite, adjacent, or hypot
ruslelena [56]

4.

known side: opposite (150m)

unknown sides: adjacent and hypotenuse

using Tan to find the distance from the tower's base to the key.

why do we use Tan to find the distance?

the tower creates an angle of 72 degrees with the ground, which will be called α, and it is 150m high from the ground which is opposite ∠α. (shown in picture). we can see that the distance from the base of the tower to the key is the adjacent of the ∠α.

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5.

4.

known side: opposite (150m)

unknown sides: adjacent and hypotenuse

using Sin to find the distance that the ant travelled.

why do we use Sinn to find the distance?

the tower creates an angle of 72 degrees with the ground, which will be called α, and it is 150m high from the ground which is opposite ∠α. (shown in picture). the ant travelled along the tower's body, which is the hypotenuse of the triangle, from the top until reaching the ground.

Sin α =  opposite / hypotenuse

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6.

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2 years ago
From a rectangular metal sheet whose measure 30cm×20cm, a circular portion whose radius is 10.5cm is cut off .Find the area of r
miskamm [114]

Answer:

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3 years ago
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