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3 years ago

What’s the difference between a radius and a diameter?

Mathematics

2 answers:

otez555 [7]3 years ago

6 0

Answer:

radius is half of the circle. diameter is the line that goes all the way to the other end of the circle

Step-by-step explanation:

vodka [1.7K]3 years ago

3 0

Answer:

a radius is half the diameter of a circle, and the diameter is the distance from any two points directly across from each other on the circle's edge.

Step-by-step explanation:

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Marty is saving money to buy a new computer. He received $200 for his birthday and saves $150 of each week’s paycheck.

Alex777 [14]

Yes it does, it is proportional because it increases by the same amount at a constant time (which is each week's paycheck). The constant is the 150. i may be wrong sorry if so.

8 0

3 years ago

A bulletin board is 3ft high, it's area is 15 square ft what is the perimeter of the bulletin board

Molodets [167]

16 Feet because 15 divided by 3 is 5 then you add 3+3+5+5

3 0

3 years ago

Read 2 more answers

HELP!!!<br> HALP MEEEEEEEE

goldfiish [28.3K]

Answer:

Bryce's unit rate in miles around the track is 3 rate per mile . Now, as we know the formula for speed i.e. So, Bryce's unit rate in miles around the track is 3 rate per mile .

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3 years ago

Read 2 more answers

The Johnson twins were born nine years after their older sister. This year, the product of the three siblings ages is exactly 18

KATRIN_1 [288]

Answer: The age of the twins is 10 years.

Step-by-step explanation:

Suppose the age of older sister be x

Let the age of twins sister be x-9, as they are born after 9 years.

Product of their ages be

$x(x-9)(x-9)\\\\=x(x^2-18x+81)\\\\=x^3-18x^2+81x$

Sum of their ages will be

$x+x-9+x-9\\\\=3x-18$

According to question,

$1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19$

So, Age of older sister will be 19 years.

Age of the twins will be

$19-9=10\ years$

Hence, the age of the twins is 10 years.

3 0

3 years ago

According to a study by de Anna students, the height for Asian adult males is normally distributed with an average of 66 inches

Maslowich

A. X ~ N(66, 6.25)

b. $z_{1} =\frac{65-66}{2.5}=-0.4$
$z_{2} =\frac{69-66}{2.5}=1.2$
Using a standard normal probability table to find probability values for the z-scores, we get:
P(65 < X < 69) = 0.1554 + 0.3849 = 0.5403

c. z= 0.524 and -0.524
$0.524=\frac{X-66}{2.5}$
1.31 = X - 66
X = 67.31
When z = -0.524, X = 64.69.
P(64.69 < X < 67.31) = 0.4

4 0

3 years ago