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lesantik [10]
2 years ago
12

PQR is a right-angled triangle.

Mathematics
1 answer:
ICE Princess25 [194]2 years ago
3 0

Step-by-step explanation:

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How do i do this idk how to do
marysya [2.9K]

Let's find the perimeter first by adding all the side lengths together. There are two missing side lengths, which we can find by taking the side opposite them and subtract the side behind the missing side from them.

I've attached a diagram showing how to find the side lengths.

Now let's add all the side lengths together: 4 cm + 8 cm + 8 cm + 2 cm + 4 cm + 6 cm = 32 cm

The perimeter of this figure is 32 cm.

---

To find the area we can divide this figure into 2 rectangles. On the second attached diagram, I've split the figure into two and labeled the length and width of each rectangle.

Area of a rectangle = length * width

Area of red labeled rectangle = 4 cm * 2 cm = 8 cm²

Area of yellow labeled rectangle = 8 cm * 4 cm = 32 cm²

Add the two areas together: 8 + 32 = 40

The area of the figure is 40 cm².

6 0
3 years ago
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Help me with this please
zloy xaker [14]

Answer:

Step-by-step explanation:

for x, then  7 = (x1+9) /2

14 = x1+9

5 = x1

for y , then 4 = (y1+7 ) /2

8 = y1 + 7

1 = y1

J = (5,1)

5 0
3 years ago
The first two terms of a sequence are 5 and 7. Each term after the second is found by taking the average (arithmetic mean) of al
ch4aika [34]

Answer:

6

Step-by-step explanation:

We can prove that every number after the second will be a six by induction.

<em>Base case.</em> Since \frac{5 + 7}{2} = 6, so the third term is a six.

<em>Inductive hypothesis</em>. Fix the number of terms to be <em>n</em> and assume that

\frac{1}{n} \sum\limits_{i=1}^{n}t_i = 6

<em>Inductive step</em>. We will now show that \frac{1}{n+1} \sum\limits_{i=1}^{n+1}t_i = 6.

Notice that

$\begin{array}{lll}\frac{1}{n+1} \sum\limits_{i=1}^{n+1}t_i & = \frac{n}{n(n+1)} \sum\limits_{i=1}^{n+1}t_i & \\& = \frac{t_{n+1}}{n+1} + \frac{n}{n(n+1)} \sum\limits_{i=1}^{n}t_i &\\& = \frac{t_{n+1}}{n+1} + \frac{6n}{n+1} & \text{(by the IH)}\\& = \frac{6}{n+1} + \frac{6n}{n+1} & \text{by de\\finition}\\& = \frac{6(n+1)}{n+1} & \\& = 6 & \end{array} \square$

6 0
2 years ago
I need help I’m rlly stupid at the moment
Elanso [62]

Answer: 4

Step-by-step explanation: We can rewrite this as 5 1/4 - 1 1/4 which equals 4.

8 0
2 years ago
TIMED TEST WITH ONLY A FEW MINUTES LEFT, HELP!!
mina [271]

Answer:

width = 1 unit, length = 8 units

Step-by-step explanation:

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2 years ago
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