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anastassius [24]
3 years ago
12

A 100 cm² b 9 cm² c 225 cm² d 28.26 cm²

Mathematics
1 answer:
nasty-shy [4]3 years ago
6 0

Answer:

28.26 cm^2

Step-by-step explanation:

A = (pi)r^2

A = 3.14 * (3 cm)^2

A = 3.14 * 9 cm^2

A = 28.26 cm^2

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A certain family has a husband, wife, son, and daughter. All together they are 68 years old. The husband is 3 years older than t
Vsevolod [243]

Answer:

32 years old

Step-by-step explanation:

The husband is 32 years old as the wife is 3 years younger than the husband. The son is 3 years older than the daughter. Their family altogether total age today is 68 years while 4 years ago their age total was 54 years. The difference is 14 years. If we divide the difference into 4 then the age can not be whole number which means daughter is born after 2 years. She is now 2 years older. Son is 3 years older than the daughter which means he is 5 years old. The husband then must be 32 years old and wife is 3 years younger which means she is 29 years old now.

32 + 29 + 5 + 2 = 68 years.

5 0
3 years ago
Give the domain and range of the relation. ​{(-3​,6​), ​(-2​1,​), ​(0,-3​), ​(2​,1​), ​(4​,13​)}
Rudik [331]

Answer:

Domain: {-3, -2, 0, 2, 4}

Range: {-3, 0, 1, 6, 13}

Step-by-step explanation:

3 0
2 years ago
The points (2,-5) and (5,r) lie on a line with slope 2. Find the missing coordinate r.
Andrew [12]

Answer: r = 1

Step-by-step explanation:

The slope of a line can be represented as \frac{y_2-y_1}{x_2-x_1}.  Plugging in the following values would provide you with:

\frac{(r)-(-5)}{(5)-(2)} =2

\frac{r + 5}{3}  = 2

r + 5 = 6

r = 1

Hope it helps :) and let me know if you want me to elaborate on anything.

7 0
2 years ago
A positive slope indicates a ___ process A. Steady B gaining c.losing D. slow
WARRIOR [948]

Answer:

B. Gaining

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Hmm..... Can someone help me please ? Thanks!
kolezko [41]
I believe it is A. Hope this helps.
6 0
3 years ago
Read 2 more answers
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