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Shkiper50 [21]
2 years ago
11

Select the correct answer from each drop-down menu. Consider this system of equations: (equation A) (equation B) The solution fo

r the system of equations is .
Mathematics
1 answer:
GarryVolchara [31]2 years ago
3 0

The solution for the system of equations is: (99/13, 150/13)

Given the two expression 2/3x+3/5y=12 and 5/2y-3x=6

We have to find solution of two given expression.

To find the value of x, we have to eliminate y by making y the subject of formula in any of the equations.

Multiply equation A by 5/3 t.o get,

5/3(2/3x) + 5/3(3/5y) = 5/3(12)

10/9x + y = 20

y = 20 - 10/9x

substituting for y into equation b, we have:

5/2(20 - 10/9x) - 3x = 6

50 - 25/9x - 3x = 6

52/9x = 44

52x = 396

The expression that gives the value of x is: 52x = 396

Hence, x = 396/52 = 99/13

y = 20 - 10/9(99/13) = 20 - 110/13 = 150/13

Hence The solution for the system of equations is: (99/13, 150/13)

Learn more about system of equations here:

brainly.com/question/13729904

#SPJ10

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A salesperson had $240, 000 in sales last year, which is 60% of the sales she had this year. Which equation could be used to det
dem82 [27]

Answer: $400,000

Step-by-step explanation:

Let the salesperson's total amount of sales, in dollars, for this year be represented by x.

Therefore, 60% of x = $240,000

60/100 × x = $240,000.

0.6 × x = $240,000..

x = $240000 / 0.6

x = $400,000

Therefore, the salesperson's total amount of sales, for this year is $400,000.

6 0
3 years ago
F(x)=9x+5, find f^-1(x).
lidiya [134]

Answer:

interchange the role of x and y

x=9y+5

x-5=9y

<u>x-5</u><u> </u>=y

9

so,f^-1(x)= <u>x-5</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>9

hope it helps.

<h3>stay safe healthy and happy.</h3>
4 0
3 years ago
A rectangular prism has a length of 12 feet, a width of 6 feet, and a height of 2 feet.
aliina [53]
The volume of the prism is 144 ft^3. If we use the letter V to represent volume, the formula for the volume of a rectangular prism is V=length*width*height. When you plug in the numbers, the equation is V=12*6*2. When you multiply these three numbers together, you get 144. Because you are finding the volume, your units are cubed, so your answer is 144 ft^3. I have attached an image of this problem written out (I’m sorry if the image is bad, I drew it on my phone). If you need any more help or any clarification, please let me know and I will be happy to help!

3 0
3 years ago
On Monday, Mrs. Smith drove 3.56 miles to go to the grocery store, 5.9 miles to go to the bank, and 12.087 miles to go out to di
Yuki888 [10]

Answer:

22

Step-by-step explanation:

3.56 = 4

5.9 = 6

12.087 = 12

4+6+12 = 22

6 0
3 years ago
PLEASE UELP IF YOU CAN DO THESE TWO. YOU WILL RECOVE BRAINLIST
sergeinik [125]

Answer:

See the answers below.

Step-by-step explanation:

An exponential model is the best representation of the given model.

f(t) = 500(0.5)^{\frac{t}{10}}      (where t is given in minutes)  

f(120) = 500(0.5)^{\frac{120}{10}}\\\\=0.12\:g

Best Regards!

7 0
3 years ago
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