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3 years ago

2. 20% of what number is 15

Mathematics

1 answer:

Ann [662]3 years ago

3 0

Answer:

20 percent (calculated percentage %) of what number equals 15? Answer: 75

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Math help rightnow plzzzzzzzzzzzzzzzzzzzzzz 1 attachment answer all

raketka [301]

x-7>10

x>10 + 7

x>17

3x <= 21

x <= 21/3

x<= 7

5a - 2<18

5a < 18 + 2

5a <20

a <20/5

a<4

2t + 8 >= -4(t +1)

2t +8>= -4t -4

2t + 4t >= -4 - 8

6t >= -12

t>= -12/6

t>= -2

6 0

3 years ago

In a shipment of 22 smartphones, 2 are defective. How many ways can a quality control inspector randomly test 4 smartphones, of

Eddi Din [679]

Answer:

Therefore the required ways are =190

Step-by-step explanation:

Combination: Combination is the number of selection of items from a collection of items where the order of selection does not matter.

Total number of smartphones =22

Defective phone = 2

Non defective phone = (22-2) =20

The control inspector randomly test 4 smartphones of which 2 are defective.

Non defective phone = 2

The ways to select 2 non defective phone is

$^{20}C_2=\frac{20!}{2!(20-2)!} =\frac{20!}{2!18!}=\frac{19\times 20}{2} =190$

The ways to select 2 defective phone is= $^2C_2=1$

Therefore the required ways are = (190×1) =190

5 0

3 years ago

Find x using the ratio of the sides 12 cm and 16cm

Marysya12 [62]

Answer:

the ratio of the following x is 3/4

5 0

3 years ago

1/4( 16x-8)-8x= -1/3 ( ? x+9)

MatroZZZ [7]

Answer:

d.16

Step-by-step explanation:

3 0

2 years ago

Given that<br> 4x : 3= 11 : 5 Calculate the value of x<br> .

AleksAgata [21]

Step-by-step explanation:

$1 \frac{13}{20}$

$4x \3 = 11 \5 \\ \\ 20x = 33 \\ x = 33 \div 20 \\ = 1 \frac{13}{20}$

3 0

3 years ago

2. 20% of what number is 15​

2. 20% of what number is 15