Answer:
<h2><em>
[2(x+y)-25]cm</em></h2>
Step-by-step explanation:
Let the height of their oldest sister isabella be z centimeters. Roger is x centimeters tall and Olivia is y centimeters tall.
If their oldest sister, Isabella, is 25 centimeters shorter than the double of the sum of Roger and Olivia's height, this can be expressed as shown;
First let us get the sum of Roger and Olivia's height;
The sum of Roger and Olivia's height = (x+y)cm
The double of the sum of their ages = 2* (x+y)cm = 2(x+y)cm
Now if Isabella, is 25 centimeters shorter than the double of the sum of their ages, the expression will be [2(x+y)-25]
<em>Since the height of isabella is z, the expression that model isabella's height will be expressed as z =[2(x+y)-25]cm</em>
Answer:
3.28 cm
Step-by-step explanation:
The computation is shown below:
The Radius of a circle be R
And, An arc be A
So, the length of the arc would be
L = (A ÷ 360°) × 2 × 3.14 × R
Here R = 6 cm
Angle = 5 minutes and 15 seconds
As we know that the clock has the complete revolution in 60 minutes
So
60 minutes = 360°
As we know that
60 seconds = 1 min
So,
1 = 1min ÷ 60seconds
15 seconds = 15 seconds × ((1 ÷ 60)
= (15 ÷ 60) min
= 0.25 min
So,
5 minutes and 15 seconds
= 5 min + 0.25 min
= 5.25 min
60 minutes = 360°
So,
1 = 360° ÷ 60min
For 5.25min
= (5.25min) × (360° ÷ 60min)
= 31.5°
Then we have A = 31.5°
Now the far would be
L = (31.5° ÷ 360°) × 2 × 3.14 × 6cm
= 3.28 cm
Answer:
32
6.4
Step-by-step explanation:
since the absolute value of everything is positive, we can subtract 66-34, to learn that it covered 32 units, in means of distance, and then 32 divided by 5 is 6.4, which mean it covered an average of 6.4 units per minute