Answer:
The dryer costs $325.
Step-by-step explanation:
Let <em>w</em> represent the cost of the washer and <em>d</em> represent the cost of the dryer.
They cost $587 combined. In other words:
The washer costs $63 less than the dryer. Therefore:
Thus, we have the system of equations:
We can solve it using substitution. Substitute the second equation into the first. Hence:
Combine like terms:
Add 63 to both sides:
And divide both sides by two. Hence:
The dryer costs $325.
Further Notes:
And since the washer is $63 less, the washer costs:
The washer costs $262.
10-2/3=9 1/3 if you estimate that it would be 9
next it is 3 - 1/8= 2 7/8 estimate it would be 3
so 9 x 3= 27
Answer:
4)X=23
5)x=15
Step-by-step explanation:
8x-77=3x+38
+77 -3x
5x=115
X=23
———
5x+3+9x-33=180
14x-30=180
+30
14x=180
X=15
=> The first expression on the left: (1 + tan²)
we know that tangent = sin/cos
so tan² = sin²/cos²
the expression is <u>(1 + sin²/cos²)</u>
=> The second expression on the left: (1 - sin²)
we know that (sin² + cos²) = 1
subtract sin² from each side,
and we have (1 - sin²) = (<u>cos²)</u>
=> Multiply the massaged form of the two expressions:
(1 + tan²) (1 - sin²) = (<u>1 + sin²/cos²)</u> (<u>cos²)</u> = (cos² + sin²) = <em>1 </em>qed
<u> </u>
Answer:
2.33 inches and 4.66 inches
Step-by-step explanation:
2x+x=7 or 3x=7
divide by three and x =2.33
that's for the first one and the second one is twice the size so it'll be 4.66 inches
