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Maksim231197 [3]
2 years ago
10

The circle shown has a radius of 4 cm.

Mathematics
1 answer:
Vesna [10]2 years ago
7 0

Answer:

8 cm

Step-by-step explanation:

4+4=8 To get the diameter, double the radius and add them together.

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Chas and Tyler have been collecting video games. Chas has 25 video games, and Tyler has mm video games. Together they have a tot
Sladkaya [172]

Answer:

Tyler has 40 video games

Step-by-step explanation:

x= chas

y= tyler

z= total

x+y=z

25+y=65

-25      -25

y= 40

8 0
3 years ago
The amount in kilograms, a, of a radioactive element that remains after t hours can be modeled by the equation a= 0.65(0.92)to t
elena-14-01-66 [18.8K]

Answer:

The rate of decrease is 8%

Step-by-step explanation:

we know that

The general equation for the radioactive decay can be written as:

a=a_0(1-r)^t

where

a is the amount in kilograms after time t.

a_0 is the original amount of the substance or y-intercept of the function

r is the decay rate, written in decimals.

t is the time

In this problem we have

a=0.65(0.92)^t

so

a_0=0.65\\(1-r)=0.92

solve for r

r=1-0.92=0.08

Convert to percentage

0.08(100)=8\%

6 0
3 years ago
Subract 5 5/21 from 13 1/7
Sladkaya [172]

Answer:

The answer is 166/21, or 7 19/21

Step-by-step explanation:

First, you would set up the equation, which is:

13 1/7 - 5 5/21

Next, you would turn them into an improper fraction, which is:

92/7 - 110/21

Then, you would multiply 92/7 by 3/3 because that is the least common multiple for 21 and 7 (which are the denominators). When you are done multiplying, the equation would be:

276/21 - 110/21

Afterwards, you would subtract the numerators and leave the denominators alone, which gives you the answer 166/21. As a mixed number, this would equal 7 19/21.

7 0
3 years ago
Read 2 more answers
What is 0.25 (repeating 5) as a fraction?​
Vanyuwa [196]
1/2 or 2/4 pretty sure
4 0
2 years ago
De los 125 alumnos que hay en 5 grado, 3/4 de ellos tienen celular. Cuántos alumnos no tienen celular?
bogdanovich [222]

Answer:

31 alumnos no tienen celular

Step-by-step explanation:

Si 3/4 de los alumnos tienen celular, entonces 1/4 de ellos no tienen celular.

1/4 de 125 =

= 0.25 * 125

= 31.25

8 0
3 years ago
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