Answer:
13cm
Step-by-step explanation:
Answer:
311.6 cm
Step-by-step explanation:
To solve this problem, let's call:
k = Keith's height
n = nephew's height
Since the ratio is 15:7, we have
(1)
Then, Keith's height is increased by 16%, so the new height of Keith is
(2)
While the nephew's height is doubled:
(3)
We also know that Keith is now 34 cm taller than his nephew, so
(4)
Substituting (2) and (3) into (4), we get

And substituting (1),

Solving for n,

So the current height of the nephew is:

While Keith's current height is

So their total current height is

Answer:
12.247 Hope I helped
Step-by-step explanation:

Answer:
25.12
Step-by-step explanation:
You would multiply 3.14 times 8 to get 2512. From there you can notice that there are 2 points after the decimal place so you need to move it over 2 places. Your final answer would be 25.12.
Answer:
D: 216 E: 2038
Step-by-step explanation:
For D:
P= - 55/4 × t + 340
Substitute in for t (2022-2013=9)
-55/4 × 9 = - 123.75
-123.75+340= 216.25
Round down to 216
For E:
The owl population =0
0=-55/4×t+340
-340=-55/4 × t
-340÷-55/4=t
T=24.7272
Round to 25
25+2013 =2038