3(2 + x)
3(2) + 3(x)
<span>With the distributive property, you can multiply numbers inside parenthesis by numbers outside a parenthesis.
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x(a + 1 + 4)
x(a) + x(1) + x(4)
ax + x + 4x
The number must be distributed across every term.
Answer:
See below.
Step-by-step explanation:
sin2x-tanx
= 2sinx cosx - sinx/cos
= (2sinx cos^2x - sin x) / cos x
= sinx ( 2 cos^2x - 1 ) / cos x
Now sin x / cos x = tanx and 2 cos^2 x - 1 = cos2x
so this simplifies to cos2x tan x.
Answer:
x-3
Step-by-step explanation:
the inverse is x-3
this is the answer
Answer:
options aren't given but the correct answer will be
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Angles and Lines</u>
It's convenient to recall two basic principles of angles:
The sum of internal angles in a triangle is 180°
Two linear angles are supplementary, i.e. they sum 180°.
Angles ABC and CBD are linear. Since we know the measure of angle CBD, thus the measure of angle ABC is 180°-6x.
Now focus on the triangle. The sum of its internal angles is:
x + 40 + 3x + 10 + 180 - 6x = 180
Simplifying:
-2x + 230 = 180
Subtracting 230:
-2x = -50
Dividing by -2:
x = -50 / (-2) = 25
x = 25°
Now find the measure of angle CAB