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3 years ago

Question 13 of 21

Mathematics

1 answer:

elena-s [515]3 years ago

4 0

Hi there ! The answer is C

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How do you find the perimeter in a triangle

dsp73

Add all three sides if they are given. If it is a right angled triangle you can also use Pythagoras’ theorem or trigonometry

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3 years ago

Find the distance d (P1,P2) between the given points P1 and P2 P1= (5,4) P2=(-4,5)

oee [108]

Answer:

$\sqrt{82 }$

Step-by-step explanation:

d = $\sqrt{(x_{1} - x_2)^2+(y_1-y_2)^2 }$

d = $\sqrt{(5 - (-4))^2+(4-5)^2 }$

d = $\sqrt{(9)^2+(-1)^2 }$

d = $\sqrt{81+1 }$ = $\sqrt{82 }$

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3 years ago

A city that has an elevation of 15 meters is closer to sea level than a city that has an elevation of -10 meters. Agree or Disag

amm1812

Answer:

disagree

Step-by-step explanation: if a city that has an elevation of 15 meters is closer to sea level than a city that has an elevation of -10 meters. -10 meters is still 5 meters closer than 15 meter

8 0

2 years ago

Find the exact value of x.

PolarNik [594]

Answer:

$x = 4 \sqrt{3}$

Step-by-step explanation:

$\frac{8}{2} = 4 \\ 4 \times \sqrt{3} = 4 \sqrt{3}$

7 0

3 years ago

Anita and Brad are each riding on the same path. Anita began riding at start of the path and is riding at rate of 18 mile per ho

ser-zykov [4K]

Answer:

They will be at the same position after 2 hours.

Step-by-step explanation:

Here, it should be asked the time it will take for Anita to catch Brad.

Anita began riding at start of the path and is riding at rate of 18 mile per hour.

This means that, after t hours, her position will be given by:

$A(t) = 18t$

Brad begin from a sport 10 mile ahead of her and I riding at rate of 13 mile per hour

This means that, after t hours, his position will be given by:

$B(t) = 10 + 13t$

After how much time will they be at the same position?

This is t for which:

$A(t) = B(t)$

$18t = 10 + 13t$

$5t = 10$

$t = \frac{10}{5}$

$t = 2$

They will be at the same position after 2 hours.

8 0

3 years ago