Answer:
y=2x
Step-by-step explanation:
y is the amount of money made from the sold books
x is the number of books that are sold
since every book is sold for 2 dollars it's 2x,
so that mean x is multiplied by 2 to get y
m YZ = m ZW
Prove: m XZ = m ZV
Answer:
Step-by-step explanation:
m ∠XOY = m ∠WOV
so, m XY = m WV --- (i)
{ If angle subtended by two arcs at the center are equal, then length of arc are equal}
m YZ = m ZW ------- (ii) {given}
Add (i) and (ii)
XY + YZ = WV + ZW
XZ = ZV
Hence proved.
Answer:
Given that m ∠XOY = m ∠WOV then m XY = m WV, because central angles are equal to arcs.
Given: m YZ = m ZW
The addition of arcs XY and YZ make arc XZ, that is: m XY + m YZ = m XZ
The addition of arcs ZW and WV make arc XZ, that is: m WV + m ZW = m ZV
Then, m XZ = m ZV
Answer: The height of the tree will be 21 meters
Answer:
-4x² + 10x + 4
Step-by-step explanation:
(-4x² + 3x - 5) - (-7x - 9)
-4x² + (3x - -7x) + (-5 - -9)
-4x² + (3x + 7x) + (-5 + 9)
-4x² + 10x + 4
To subtract – 7x – 9 from - 4x² + 3x – 5, we change the signs of all the terms in the second expression and then combine like terms. The final answer is -4x² + 10x + 4.
To subtract – 7x – 9 from - 4x² + 3x – 5, you simply replace the minus sign before the second expression (– 7x – 9) with a plus sign, and then change the signs of all the terms in that expression. This is analogous to the subtraction of scalars, where for example, 5–2 equals 5+(-2).
Thus, the expression becomes: -4x² + 3x - 5 + 7x + 9. Now, you simply combine like terms. The 3x and 7x can be combined to get 10x, and -5 and 9 can be combined to get 4. The final answer is -4x² + 10x + 4.
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