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9966 [12]
3 years ago
6

A square and a rectangle have the same perimeter. The rectangle is 13 cm long and 7 cm wide.

Mathematics
1 answer:
slava [35]3 years ago
4 0

Answer:

the length of a side of a square is 5 cm long.

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PLEASE HELP! My friend and i cant figure out the answer!!! i attached a picture of the question please help us!!!
satela [25.4K]

Answer:

a.6.66

b.384

c.860

d.166

Step-by-step explanation:

6 0
4 years ago
A rabbit hops 8 meters in one second. After 7 seconds, the rabbit has hopped 20 meters. What is the rabbit's average rate of cha
Margarita [4]

Answer:

Average Rate of change = 2

Step-by-step explanation:

Given - A rabbit hops 8 meters in one second. After 7 seconds, the rabbit has hopped 20 meters.

To find - What is the rabbit's average rate of change?

Formula used -

Average rate of change of a function f(x) in an interval [a, b] is \frac{f(b) - f(a)}{b - a}

Proof -

Given that,

In 1 second - Rabbit hoops 8 meters

In 7 seconds - Rabbit hoops 20 meters

So,

Average Rate of change = \frac{20 - 8}{7 - 1}

                                         = \frac{12}{6}

                                         = 2

⇒Average Rate of change = 2

7 0
3 years ago
HELPPP NEED THIS IN 10 MINSSS!!!!
Artyom0805 [142]

Answer:

<h2>x=3.5</h2><h3>step-by-step explanation:</h3><h3>to understand the solving steps</h3><h3>you need to know about:</h3>
  • trigonometry i.g cos=ad/hypo
  • equation
  • PEMDAS
<h3>given:</h3>

hypo:6.5

angle:57°

<h3>to solve:</h3>

x

<h3>let's solve:</h3>

according to the question

\cos( {57}^{o} )  =  \frac{x}{6.5}

x =  6.5\cos( {57}^{o} )

x = 3.5

6 0
3 years ago
ATTENTION
finlep [7]

Here!

<h2>The answer is Option A!</h2>

(x + 2 \sqrt{3} i)(x - 2 \sqrt{3}i )

<h3>Why so??</h3>

Let's see what complex numbers are!

(x + 2  \sqrt{3 }i  )(x - 2 \sqrt{3}i ) \\  =  {x}^{2}  - 2 \sqrt{3} x + 2 \sqrt{3} x -  {(2 \sqrt{3} i)}^{2}  \\  =  {x}^{2}  -  {(2 \sqrt{3}i) }^{2}

Now we know,

{i}^{2}  =  - 1

So!

=  {x}^{2}  - 12 \times(  - 1)

=  {x}^{2}  + 12

And thus we get the answer!

3 0
3 years ago
Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.
lesya [120]
The answer my friend is b
5 0
3 years ago
Read 2 more answers
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