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just olya [345]
1 year ago
14

To get to his parent's house, Isaiah would have to drive due north 9 kilometers. To get to his grandparents' house, he would hav

e to drive due east 12 kilometers. The straight-line distance between the parents' and grandparents' houses is __ kilometers.
Mathematics
1 answer:
DaniilM [7]1 year ago
6 0

let us represent the question with a diagram for better understanding.

Using Pythagoras theorem

\begin{gathered} c^2=12^2+9^2 \\ c^2=144+81 \\ c=\sqrt[\square]{225} \\ c=15\text{ km} \end{gathered}

The distance between the parents and grandparent house = 15 km

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2 years ago
Write a system of equations to model each situation. Solve using any method:
ivolga24 [154]

Answer:

a=50 b=20

Step-by-step explanation:

Call A and B the 2 present ages.

Ten years from now, A is twice as old as B -->

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Five years ago, A was 3 times as old as B -->

(A - 5) = 3(B - 5) (2).

Solve the system (1) and (2).

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Check

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3 years ago
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3 years ago
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2 years ago
Give the center and radius of the circle x2+y2=25
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