Answer:
see explanation
Step-by-step explanation:
Expressing as equations
9x + 10y = 297 → (1) ← that is B
8x + 5y = 194 → (2) ← that is D
To solve the system of equations, multiply (2) by - 2
- 16x - 10y = - 388 → (3)
Add (1) and (3) term by term to eliminate the term in y
(9x - 16x) + (10y - 10y) = (297 - 388), that is
- 7x = - 91 ( divide both sides by - 7 )
x = 13
Substitute x = 13 into either of the 2 equations and solve for y
Using (1), then
(9 × 13) + 10y = 297
117 + 10y = 297 ( subtract 117 from both sides )
10y = 280 ( divide both sides by 10 )
y = 28
Cost of a small box of candy = $13
Cost of a large box of candy = $28
4/10= 8/20, 2/5. For 8/20 u multiply 2 times and for 2/5 u divide by 2
Hope that helps u
The answer to your question is 45 miles / 1 hour * 5280 feet / 1 mile * 1 hour / 3660 seconds =
45 * 5280 * 1 / 1 * 1 * 3660 =
2737600 feet / 3660 second =
64.918
<h2>
Answer:</h2>
<h2>Step-by-step explanation:</h2><h3>Given:</h3>
<h3>To Find:</h3>
<h3>Solution:</h3>
We know the value of x and y,
x = 6 and y = -1 [Given]
<u>Substitute the </u><u>value,</u>
- 4x + 5y
- 4(6) + 5(-1)
- 24 + (-5)
- 24 - 5
- 19 Ans.
When you simplify the square root of a number, you are looking for factors of the number that are perfect squares that you can remove from under the radical. For example sq root of 8... it's not a perfect square but factors of 8 include 2 x 4... 4 is a perfect square so we can take it out of the radical by taking it's square root. Now you are left with 2* sq root of 2.
For sq root of 48
48 = 12 x 4
12 = 3x4 so we can say 48 = 3x4x4
so... sq root 48 = sq root 3x4x4
we have two 4's under the radical. Sq root x^2 = x so sq root 4^2 is 4
Pull it out from the radical and we are left with 4 * sq root 3