10% as a decimal the answer is 0.10
let's firstly convert the mixed fractions to improper fractions and then multiply.
Answer:
Step-by-step explanation:
7/25 ÷ (-0.35) = -4/5 or -0.8
<em>Ace Carlos</em>
We are given : m∠WYX=(2x−1)° and m∠WYZ=(4x+1)°.
∠WYX and ∠WYZ are complementary.
We know, sum of complementary angles is = 90°.
So, we need to add ∠WYX and ∠WYZ and set it equal to 90°.
m∠WYX + m∠WYZ = 90°.
Plugging values of ∠WYX and ∠WYZ in the above equation, we get
(2x−1)° + (4x+1)° = 90°.
Removing parentheses from both sides,
2x-1 + 4x+1 =90.
Combining like terms,
2x+4x= 6x and -1+1 =0
6x +0 =90.
6x=90.
Dividing both sides by 6.
6x/6 =90/6
x= 15.
Plugging value of x=15.
m∠WYX=(2x−1)° = 2*15 -1 = 30 -1 =29
m∠WYZ=(4x+1)° = 4*15 +1 = 60+1 = 61.
Therefore, ∠WYX=29° and ∠WYZ=61°.
Given that each covering is 15 windows long you need to calculate how many times is 15 in 50, to know how many coverings are necessary to cover the 50 windows.
The operation is a simple division: 50 ÷ 15 gives the number of times that 15 is contained in 50.
The result is 50÷15 = 3.33.
So, you need more than 3 coverings, and so take the next whole number, i.e. 4.
Answer: 4