14 and 15 pls and I need work too thax
1 answer:
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Answer:
Rate of change = -30
Initial value = 400
Step-by-step explanation:
Write the equation of the linear function representing this situation. Let
x = number of weeks Gandalf is spending money
y = amount of quibbles left in his account.
Gandalf has 400 quibbles in his account. This means, is the initial value of quibbles Gandalf had in his account
He spends 30 quibbles each week, this means, that he spends 30x quibbles in x weeks and the amount left in his account is
Therefore, the slope is and this is the rate of change (negative because the amount of money in his account decreases each week)
Step-by-step explanation:
By Basic Proportionality Theorem, the triangles UTV and USR are similar.
Let us consider RV as x.
is the required answer, after simplifying it.
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Or if you want to prove it similar:-
In triangle UTV and USR,
Angle TUV = Angle SUR (common)
Angle UVT = Angle URS (Corresponding angles b/w parallel lines)
By AA similarity,
UTV =~ USR.
Hope it helps :)