Can someone help me with this pls

Mathematics

2 answers:

ohaa [14]2 years ago

6 0

Answer:

33.8

**Brainliest would be appreciated**

Step-by-step explanation:

Yuki888 [10]2 years ago

5 0

Answer:

33.8

Step-by-step explanation:

1) Use Phythagoras theorem to get RS ↓

$9.1 ^{2} + 6 ^{2} = 118.81 \\ \sqrt{118.81 } = 10.9$

2) RS = RQ

therefore, to get the perimeter, you'll have to total up the sides of the triangle ↓

$rs + rq +qt + ts \\ = 10.9 + 10.9 + 6 + 6 \\ = 33.8$

Hope this helps =)

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3 years ago

Ann is adding water to a swimming pool at a constant rate. The table below shows the amount of water in the pool after different

N76 [4]

Answer:

(a) As time increases, the amount of water in the pool increases.

11 gallons per minute

(b) 65 gallons

Step-by-step explanation:

From inspection of the table, we can see that as time increases, the amount of water in the pool increases.

We are told that Ann adds water at a constant rate. Therefore, this can be modeled as a linear function.

The rate at which the water is increasing is the rate of change (which is also the slope of a linear function).

Choose 2 ordered pairs from the table:

$\textsf{let}\:(x_1,y_1)=(8, 153)$

$\textsf{let}\:(x_2,y_2)=(12,197)$

Input these into the slope formula:

$\textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{197-153}{12-8}=\dfrac{44}{4}=11$

Therefore, the rate at which the water in the pool is increasing is:

11 gallons per minute

To find the amount of water that was already in the pool when Ann started adding water, we need to create a linear equation using the found slope and one of the ordered pairs with the point-slope formula:

$y-y_1=m(x-x_1)$