Answer:
∠1=55°
Step-by-step explanation:
Since all the angles in a triangle have to add up to 180° we can make an equation
80°+45°+∠1=180°
∠1=55°
Answer:
In 50 years there'll be approximately 3582 elephants.
Step-by-step explanation:
If they are decreasing at a rate of 9% per year, it means it's population by year is:
population(0) = 400000
population(1) = population(0)*(100% - 9%) = population(0)*(91%)
population(2) = population(1)*(91%) = population(0)*(91%)*(91%) = population(0)*(91%)²
population(3) = population(2)*(91%) = population(0)*(91%)²*(91%) = population(0)*(91%)³
And so on, so the number of population as years passes is:
population(n) = population(0)*(91/100)^n
In this case we want to know the population of elephants when n = 50, so we have:
population(50) = 400000*(0.91)^50 = 3582.033
In 50 years there'll be approximately 3582 elephants.
x = 9
The sides on the left are proportional and can be used to find the sides on the right.
Since 72/8=9, 56/8 must equal 3x-20
Answer:
2/3
Step-by-step explanation:
There are 3 odd numbers in a dice which equals 1/2. Then there is 1/6 of a chance of rolling a 3. So it would be 1/2 + 1/6=4/6 which simplifies to 2/3.
Answer:
so im not sure what youre asking but hopefully i can help you with this a little. if you change the fractions to all have the same denominator, it will be easier for you to solve. since they can all have eight as a denominator, antonio wouldve eaten 2/8 of a box of cereal, jamie 1/8, and marianna 4/8. hope that helps a little :)
Step-by-step explanation: