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3 years ago

The ratio of students to teachers is 2:3 respectively.If there are 21 teachers, how many students are there?

Mathematics

1 answer:

yulyashka [42]3 years ago

6 0

Answer:14

Step-by-step explanation:

2:3

14:21

in 14 their is 2 7's

in 21 their is 4 7's

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Please answer for branliest

Lostsunrise [7]

Answer:

50%

Step-by-step explanation:

There are 2 cards greater than 5 , that is 6 and 7 , then

P( greater than 5 ) = $\frac{2}{4}$ = $\frac{1}{2}$ = 50%

4 0

3 years ago

John's commute to work is 20kmhr while Sheri's commute is 500mmin. Who has the fastest commute to work in mihrif 1.61km=1mi? A S

Andreyy89

Answer:

A) Sheri has the faster commute by 6.2 miles/hr.

Step-by-step explanation:

Given

John's commute to work $=20\ km/hr$

Sheri's commute to work $=500\ m/min$

$1.61\ km = 1\ mile$

John's commute to work in miles per hour = $\frac{20\ km}{1 hr}\times \frac{1\ mile}{1.61\ km}= 12.42\ miles/hr$

Sheri's commute to work in miles per hour = $\frac{500\ m}{1\ min}\times \frac{1\ km}{1000\ m}\times \frac{1\ mile}{1.61\ km}\times \frac{60\ min}{1\ hr}= 18.63\ miles/ hr$

We can see that Sheri has a faster commute.

Difference between the rates = $18.63\ miles/ hr-12.42\ miles/hr=6.21\ miles/hr\approx 6.2\ miles/hr$

∴ Sheri has the faster commute by 6.2 miles/hr.

3 0

4 years ago

The cost of manufacturing A certain type of headphone varies inversely as the number of headphones increase . If 5000 headphones

amm1812

Why are the Fundamental Orders of Connecticut important?

8 0

3 years ago

The access code for a security system has five numbers. How many different codes are

devlian [24]

Answer:

pretty sure it's just 9

Step-by-step explanation:

Let's assume the possible numbers are 1,2,3,4,5

There are only 3 numbers less than 4 (1,2,3) which means that there are 3*3 possbiblities out of the two spots

There's only 1 number greater than 4 (5) which means the third, fourth, and fifth are just 5

which means the answer is just 9

6 0

3 years ago

Solve the equation by graphing. - x2 = 8x + 20

kati45 [8]

Answer: No real solutions.

Step-by-step explanation: −x2=8x+20

Step 1: Subtract8x+20 from both sides.

−x2−(8x+20)=8x+20−(8x+20)

−x2−8x−20=0

For this equation: a=-1, b=-8, c=-20

−1x2+−8x+−20=0

Step 2: Use quadratic formula with a=-1, b=-8, c=-20

4 0

3 years ago