In this case, you already used 310 minutes out of 500 minutes monthly. So the remaining time for your cell phone should be: 500 minutes -310 minutes= 190 minutes.
You still have 1 week this month, that means the 190 mins time must be divided into 1 week or 7 days. Then the duration you of cell phone use for each day should be: 190 minute/7days= 27.14 minutes/day
Answer:
7
Step-by-step explanation:
All you have to do to solve this is subtract 18 from 25
1. <span>The yz-plane is the plane x = 0. </span>
So, The general rule of reflection over the yz- plane is <span>(x,y,z) →(−x,y,z)
</span>
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<span>2. Applying the rule found in (1)
</span>
<span>the new points of the shape after this reflection will be
</span>
P(–1, 2, 0) ⇒⇒⇒ <span>P'(1, 2, 0)
</span>Y(2, 3, 0) <span>⇒⇒⇒ Y'(-2, 3, 0)
</span>
R(–3, 4, 0) ⇒⇒⇒ <span>R'(3, 4, 0)
</span>
A(–2, 1, 5) ⇒⇒⇒ A'(2, 1, 5)
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3. Applying the transformation rule <span>(x, y, z) → (x + 2, y + 4, z – 3)
</span>
<span />to the points from number 2
<span>P'(1, 2, 0) ⇒⇒⇒
P" (3 , 6 , -3 )
</span><span>Y'(-2, 3, 0) ⇒⇒⇒ Y" (0 , 7 , -3)
</span><span>R'(3, 4, 0) ⇒⇒⇒ R" ( 5 , 8 , -3)
</span>A'(2, 1, 5) ⇒⇒⇒ A" ( 4 , 5 , 2)
a. reflection across one of the lines of symmetry of the figure.