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Allisa [31]
3 years ago
14

Help and I'll follow you ​

Mathematics
1 answer:
My name is Ann [436]3 years ago
7 0

Answer:

12 nickels and 9 dimes

Step-by-step explanation:

1/ We have: n + d = 21 <=> d = 21 - n or opposite (n = 21 - d)

2/ We have: 0.05n + 0.10d = 1.50 and then we will put 1/ into 2/

=> 0.05n + 0.10(21 - n) = 1.50

=> 0.05n + 2.1 - 0.1n = 1.5

=> -0.05n = -0.6

=> n = 12

Nevertheless, d = 21 - n = 21 - 12 = 9

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How would I solve this?
snow_tiger [21]

Answer:

- \frac{1}{2}

Step-by-step explanation:

Given the 2 by 2 matrix

\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right]

The determinant = ad - bc

For the given matrix

a = \frac{1}{2}, b = \frac{\sqrt{3} }{2}, c = \frac{\sqrt{3} }{2}, d = \frac{1}{2} , thus

ad - bc = \frac{1}{2} × \frac{1}{2} - ( \frac{\sqrt{3} }{2} × \frac{\sqrt{3} }{2} ) = \frac{1}{4} - \frac{3}{4} = - \frac{1}{2}

4 0
4 years ago
If 7000 is borrowed at the rate of 5% per annum for 3 years, the simple interest is?
Tcecarenko [31]
7000 • 5 • 3 = 105,000

Hope this helps!
7 0
4 years ago
The following equation represents the total distance (d) that the Benson family has traveled from their home, after traveling 10
Oksanka [162]

The distance from their house the Bensons' after 412 hours will be 18, 640 miles

<h3>What is a function?</h3>

A function is an expression or rule that explains the relationship between a dependent and independent variable.

Given the function;

d= 45 t + 100

Where;

  • d is the total distance
  • t is the time taken

If t = 412 hours

Substitute into the formula

d = 45 ( 412) + 100

d = 18540 + 100

d = 18, 640 miles

Thus, the distance from their house the Bensons' after 412 hours will be 18, 640 miles

Learn more about functions here:

brainly.com/question/2456547

#SPJ1

6 0
2 years ago
Look at the following numbers:
Elodia [21]
C. hope this helps :)
5 0
3 years ago
Read 2 more answers
Wat is 160656 rounded to the nearest hundred thousand
zlopas [31]
Hello There Mate!

The correct answer is 200000.

Hope This Helps You!
Good Luck :) 
8 0
3 years ago
Read 2 more answers
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