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2 years ago

9

Brandon likes to perform card tricks. if he does a trick 50 times and gets it right 90% of thr time how many times does he get t

he trick right

1 answer:

snow_lady [41]2 years ago

6 0

45 times because 90% of 50 is 45

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A 70 cm long stick is cut into two parts in such a way that the longer part is 20 cm longer than the shorter part. How long is e

Dahasolnce [82]

Answer:

Long part= 45

Short part= 25

Step-by-step explanation:

Let the short part of the stick be x

Let the long part be x+20

The total length of the stick is 70cm

x + (x+20)= 70

x+x+20= 70

2x+20= 70

2x= 70-20

2x= 50

x= 50/2

= 25

Longer part length= 20+25

= 45

The short part is 25

5 0

2 years ago

*If diagonal of a square is of length 10√2 cm then the perimeter of square is ...............cm.*

Artyom0805 [142]

Answer: 1️⃣ 40

Step-by-step explanation:

<em>x - is the side of the square</em>

<em /> $x^{2} +x^{2} =(10\sqrt{2})^{2} \\2x^{2}} =200\\2x^{2} \div 2=200 \div 2 \\x^{2} =100\\x=\sqrt{100} \\x=10 \: [cm] - side \: of \: a \: square$ <em />

<em>Find the perimeter of the square.</em>

<em>Perimeter of the square = 4 × 10 cm = 40 cm</em>

<em />

8 0

2 years ago

Airplanes are sometimes used to fight fires . A certain airplane can deliver 3.9 * 10^4 liters of water in one trip . How much w

MakcuM [25]

Answer:

just do 3.9*10000=39000

Step-by-step explanation:

7 0

3 years ago

What is the domain of the function f(x) = square root x-9+5?

tankabanditka [31]

Answer:

sqrt x-4

Step-by-step explanation:

3 0

3 years ago

.help me ............

il63 [147K]

35=x

180-75=105

X+2x=3x

105=3x

X=35

4 0

3 years ago