Answer: x = -0.3, x = -25.8
<u>Step-by-step explanation:</u>
(x + 25)(9x + 10) = 180
x(9x+10) + 25(9x+10) = 180
9x² + 10x + 225x + 250 = 180
9x² + 235x + 250 = 180
9x² + 235x + 70 = 0
a=9 b=235 c=70
Use Quadratic Formula to find the roots:
,
,
= -0.3 , -25.8
Answer: orange juice : 125mg
cranberry: 90mg
Step-by-step explanation:
orange juice : 750 divided by 6 = 125 mg
cranberry juice: 135 divided by 1.5 = 90mg
I am fairly certain this is how you solve this probem. If the answer is wrong switch the equation to,
750 divided by 1.5 = 500 - orange juice
135 divided by 6= 22.5- cranberry juice
Answer:
x=1/2 I'm not sure it may be wrong
Answ
its a just did this
Step-by-step explanation:
Using simple interest, it is found that:
- The amount invested at 7% is $2,000.
- The amount invested at 8% is $8,000.
<h3>Simple Interest</h3>
Simple interest is used when there is a single compounding per time period.
The interest after t years in is modeled by:
In which:
- r is the interest rate, as a decimal.
In this problem:
- A total of $10,000 was invested, hence .
- Two accounts paying 7% and 8% annual interest, respectively, hence .
- The total interest earned for the year was $780, hence
Then:
Considering :
Considering :
Considering :
And:
Then:
- The amount invested at 7% is $2,000.
- The amount invested at 8% is $8,000.
You can learn more about simple interest at brainly.com/question/25296782