1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mixas84 [53]
2 years ago
9

This is due in 10 minutes please help me

Mathematics
1 answer:
valkas [14]2 years ago
7 0

Given:

The rate of interest on three accounts are 7%, 8%, 9%.

She has twice as much money invested at 8% as she does in 7%.

She has three times as much at 9% as she has at 7%.

Total interest for the year is $150.

To find:

Amount invested on each rate.

Solution:

Suppose x be the amount invested at 7%. Then,

The amount invested at 8% = 2x

The amount invested at 9% = 3x

Total interest for the year is $150.

x\times \dfrac{7}{100}+2x\times \dfrac{8}{100}+3x\times \dfrac{9}{100}=150

Multiplying both sides by 100, we get

7x+16x+27x=15000

50x=15000

Dividing both sides by 50, we get

x=\dfrac{15000}{50}

x=300

So, the amount invested at 7% is 300.

The amount invested at 8% is

2(300)=600

The amount invested at 9% is

3(300)=900

Hence, the stockbroker invested $300 at 7%, $600 at 8%, and $900 at 9%.

You might be interested in
What is y=4,000-400 simplify to
const2013 [10]
It would just be y=3600 I believe. Don’t overthink it bud
6 0
3 years ago
Apply the distributive property to create an equivalent expression.<br><br> (6m – 7). 4=
Savatey [412]

Answer: 24m-28

Step-by-step explanation:

According to the distributive property ,

a(b+c) = ab+ac

(b+c)a = ba+ca , where a, b and c are any arbitrary expressions.

Given expression : (6m-7)\cdot4

By using distributive property , we have

(6m - 7)\cdot 4= (6m)(4)-(7)(4)\\\\= (6)(4)(m)-28 \ \ \ [\text{By associative property}]\\\\=24m-28

Hence, the required equivalent expression is 24m-28.

6 0
3 years ago
Read 2 more answers
An airport shuttle charges 15$ plus 1.15$ per mile. An equation is written as y = mx + b, where y is the cost for x miles. (plea
fomenos
Y=15$ and x=1.15$ per mile
8 0
2 years ago
What is the image point of (-1,4) after a translation left 5 units and up 2 units
shepuryov [24]

Answer:

(-6,6)

Step-by-step explanation:

8 0
3 years ago
Answer this question please and thank you.
Mice21 [21]
I think It’s 0.70 and in fraction is 512/729
7 0
3 years ago
Read 2 more answers
Other questions:
  • Square root of 2<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2%20%5Ctimes" id="TexFormula1" title=" \sqrt{2 \times" alt="
    9·1 answer
  • Quadrilateral EFGH is a scaled copy of quadrilateral ABCD. Select ALL of the true statements.
    9·1 answer
  • What is the selling price of a $2,499 motorcycle if a $249 discount is given?
    8·2 answers
  • In a mall 1/15 of the stores sell shoes. There are 180 stores in the mall. How many sell shoes?
    15·2 answers
  • A fishbowl shaped like a sphere is filled with water.The fishbowl has a diameter of 16 inches ñ.Which measurement is closest to
    15·1 answer
  • How to find the volume in a cylinder
    8·1 answer
  • What is the median of 68, 69, 71, 71, 71, 73, 74, 75, 75, 78
    11·1 answer
  • PLEASE HELP I KEEP GETTING THIS WRONG
    10·2 answers
  • A leopard runs 0.25 miles at an average speed of 40mph
    6·1 answer
  • Factor this trinomial completely. -12x^2+45x+12
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!