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
AlexFokin [52]
3 years ago
13

Please help me

Mathematics
2 answers:
GrogVix [38]3 years ago
7 0

Answer:

D

Step-by-step explanation:

makkiz [27]3 years ago
6 0
The answer is d because it is what it is
You might be interested in
Please help me i need it right now please
12345 [234]

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:

Let 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

Multiply both sides by 100.

7x+16x+27x=15000

50x=15000

Divide both sides by 50.

x=\dfrac{15000}{50}

x=300

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

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

4 0
3 years ago
The equation of a line is y-4=3(x+2),which of the following is a point on the line?
Greeley [361]
After you re-arrange the equation, you'll find out that you got y=3x+6....okay, this equation is a linear equation, you can use y=mx+b {where m=3, and b=6}. then to find the co-ordinate of (x,y) which is the point, substitute 1,2,3,4.... for x in 'y=3x+6' to figure out the co-ordinate of y.

answer: (1,14), (2,16), (3,19), (4,22)
8 0
3 years ago
Cos (A+B) =1/5<br>COS (A-B) = 3/5<br>Then find tan (A-B)​
Soloha48 [4]

Answer:

tan (A-B)​ = ± 4/3

Step-by-step explanation:

COS (A-B) = 3/5

COS² (A-B) = (3/5)² = 9/25 = 1 - sin² (A-B)

sin² (A-B) = 1 - 9/25 = 16/25

sin (A-B) = ± 4/5

tan (A-B) = sin (A-B) / cos (A-B) = (± 4/5) / (3/5) = ± 4/3

4 0
3 years ago
Convert the following to scientific notation: 0.009.
mote1985 [20]
The answer is:  [B]:  " 9 * 10⁻³ " .
____________________________________________________
5 0
3 years ago
Read 2 more answers
Simplify the expression<br> -4 - 8x + 2x - 15
goldfiish [28.3K]

Answer:

-6x-19

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • a new sidewalk will be 5 feet wide 200 20 ft long and filled to a depth of 9in with concrete how many cubic yards of concrete ar
    9·1 answer
  • I NEED HELP WITHIN AN HOUR!!! HELP!!
    15·2 answers
  • The sum of two numbers is 38 . the smaller number is 16 less than the larger number. what are the numbers?
    9·1 answer
  • You go on a fishing trip. The ratio of the number of bass You catch to the number of other fish you catch is 3:4.
    11·2 answers
  • A bag contains 72 toffees. How many toffees can be stored in 122 such bags? Estimate the number of toffees to nearest tens.
    9·1 answer
  • PLEASE SOMEONE HELP ME OUT I DON'T UNDERSTAND HOW TO DO THIS ! I WILL GIVE BRAINLIEST FOR YOUR ANSWER
    5·2 answers
  • The theoretical probability of a customer
    12·1 answer
  • There are 32 students in a class. Out of which 20 are boys. Find the fraction of boys and girls in the simplest form.
    13·1 answer
  • Add<br><br> -10 + 5=<br><br> Add. <br><br> -19 + -6
    15·2 answers
  • A circular plate has circumference 17 inches. What is the area of this​ plate? Use 3.14 for π
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!