Answer:
The tree will be 20 Ft
Step-by-step explanation:
5:8
?:32
8×4=32
5×4=20
20 is the answer
Let x be total hours of battery life. We have been given that battery life of Vera's phone is down to 2/5. So remaining battery life,

We have been also given that it drains another 1/9 every other hour. Now let us substitute our given information into an equation.

Now we will solve for x.


Let us convert 2/5 into minutes. We know 1 hour has 60 minutes.

Therefore, remaining battery life will be 5 hours and 24 minutes.
Answer:
see explanation
Step-by-step explanation:
Given
4
- 5a² + 1 = 0
Use the substitution u = a², then equation is
4u² - 5u + 1 = 0
Consider the product of the coefficient of the u² term and the constant term
product = 4 × 1 = 4 and sum = - 5
The factors are - 4 and - 1
Use these factors to split the u- term
4u² - 4u - u + 1 = 0 ( factor the first/second and third/fourth terms )
4u(u - 1) - 1(u - 1) = 0 ← factor out (u - 1) from each term
(u - 1)(4u - 1) = 0
Equate each factor to zero and solve for u
u - 1 = 0 ⇒ u = 1
4u - 1 = 0 ⇒ 4u = 1 ⇒ u = 
Convert u back into terms of a, that is
a² = 1 ⇒ a = ± 1
a² =
⇒ a = ± 
Solutions are a = ± 1 , a = ± 
Answer:
diameter is 16.60 ft
the circumference is 52.12ft
Step-by-step explanation:
Hope this helps!
Answer:
A) (2+x)/(4+x) × 100 = 75
B) 4
Step-by-step explanation:
2 out of 4
(2+x) out of (4+x)
(2+x)/(4+x) × 100 = 75
(2+x)/(4+x) = 3/4
8 + 4x = 12 + 3x
x = 4