![destinyhammons12345](/avatars/19194.jpg)
destinyhammons12345
06.05.2021 •
Mathematics
Will give to whoever actually answers
Please please help me
Which of the following are true about essential questions?
An essential question helps to guide the research.
An essential question uses information to answer an evidence-based claim.
An essential question should be clear and of interest to the writer.
An essential question is developed into a thesis statement.
Solved
Show answers
More tips
- S Sport When is the Champions League final?...
- H Health and Medicine Is Folic Acid a Necessary Vitamin?...
- W Work and Career How to Start Your Own Business: Tips and Recommendations...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
Answers on questions: Mathematics
- M Mathematics Carey has $25.00 to spend. He decided to buy a DVD for $10.25 and spend the rest on bags of popcorn. If each bag of popcorn costs $1.99, how many bags of popcorn...
- M Mathematics In 1965, about 44% of the U.S. adult population had never smoked cigarettes. A national health survey of 1472 U.S. adults (presumably selected randomly) during 2010...
- M Mathematics Rory has 4 pounds of ground beef to make meatballs. He uses 3/8 pound per meatball to make 9 meatballs. How many 1/8-pound meatballs can rory make with the remaining...
- M Mathematics Please help I don’t understand this...
- M Mathematics Good morning everybody it s one nice morning...
- M Mathematics 3 Hello everyone I just wanted to let every one know that when you delete some ones question it can give them an warning, so please do not delete peoples answers...
- M Mathematics Who else hates online school?...
- M Mathematics How many solutions does the following equation have? 4x +-9x + -9 +-3 = -2x + -3x+-6 +-6...
- M Mathematics Helppp?? tysvmmmmmmmmmmmmmm...
- M Mathematics A man drives from home to the store Click on the graph until the graph th Distance From Home Time NEXT QUESTION...
Ответ:
Ответ:
Amount borrowed at 9% = 9,428.57
Amount borrowed at 7% = $18,857.14
Amount borrowed at 10% = $ 21,714.29
Step-by-step explanation:
Formula for simple interest :
I = PRT,
P= Principal, R =rate , T= time
Let x = amount borrowed at 9%.
y = amount borrowed at 7%.
z = amount borrowed at 10%.
i.e. x+y+z= 50000 (i) [Given : amount invested = 50000]
Interest on x = x (0.09)(1) [as P=x, T=1 year, r= 0.09]
= 0.09x
Similarly
Interest on y = y(0.07)(1) = 0.07y
Interest on z = z(0.1)(1)=0.1z
Total interest = 0.09x+0.07y+0.1z = 4340 (ii)
Also, y=2x [given] (iii)
Put y=2x in (i) and (ii), we get
x+2x+z= 50000 ⇒ 3x+z=50000 (iv)
0.09x+0.07(2x)+0.1z=4340 ⇒ 0.09x+0.14x+0.1z=4340
⇒ 0.23x+0.1z=4340 (v)
Multiply 10 on both sides of (v)
2.3x+z=43400 (vi)
Eliminate (vi) from (v)
0.7x=6600
⇒ x= 9,428.57
From (iii), y= 2(9428.57) =18,857.14
From (vi),
2.3(9428.57)+z=43400
⇒ 21685.71+z=43400
⇒ z= 43400-21685.71
⇒ z=21714.29
Hence, Amount borrowed at 9% = 9,428.57
Amount borrowed at 7% = $18,857.14
Amount borrowed at 10% = $ 21,714.29