Answer:
x = 2
y = -1
Step-by-step explanation:
Make the coefficient of x the same
Multiply the first equation by 29
31x + 29y = 33 becomes
899x + 841y = 957
Multiply the second equation by 31
29x + 31y = 27 becomes
899x + 961y = 837
Subtract the equations
(899x + 841y) - (899x + 961y) = 957 - 837
(899x - 899x) + (841y - 961y) = 120
841y - 961y = 120
-120y = 120
y = 120/-120 = -1
Substitute the value of y into both equations to find the value of x and check its right.
31x + 29y = 33
31x + 29(-1) = 33
31x - 29 = 33
31x = 33 + 29
31x = 62
x = 62/31 = 2
29x + 31y = 27
29x + 31(-1) = 27
29x - 31 = 27
29x = 27 + 31
29x = 58
x = 58/29 = 2
17
85/17 is 5 and 51/17 is 3
Answer:
they will each receive $1.75
Step-by-step explanation:
5.50*5= 27.50
12.75*5= 63.75
27.50+63.75= 91.25
20*5= 100
100-91.25=8.75
8.75/5= $1.75
hope this helps
<h3>
Answer: Choice A) D = 500/10</h3>
Explanation:
Density = Mass/Volume
D = M/V
D = 500/10
D = 50 grams per cubic cm
Your teacher should have written cm^3, cc, or cubic cm instead of just "cm" to represent the volume. The abbreviation "cc" stands for "cubic cm" which you may hear a lot in hospital settings when it comes to medicine dosages.
If the side of the square = x meters we have the equation;-
32^2 = x^2 + x^2 ( by the Pythagoras theorem)
2x^2 = 32^2
x^2 = 16 * 32 = 512
The area of the square is 512 m^2