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3 years ago

Two circles with the same center are congruent sometimes, always, or never ?

Mathematics

1 answer:

love history [14]3 years ago

6 0

I would go with Never because you would have to have two circles with a different center to be congruent

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I need help i dont understand any of it.

OLga [1]

I was able to give 458 free thanks for you )))

i took advantage of a brainly server glitch

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3 years ago

Is the distance a baseball travels in the air after being hit a discrete random variable, a continuous random variable, or not

LuckyWell [14K]

Answer: a continuous random variable

Step-by-step explanation:

Can you count the distance it traveled? You can't, so it couldn't be discrete because you can count discrete variables.

Can you measure the distance it traveled? You sure can, that makes it a continuous random variable.

Do you know the exact distance it's going to travel? You won't, therefore it's a random variable since you don't know the value beforehand.

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3 years ago

Mary has $40\%$ fewer marbles than Jolie. If they combine all their marbles in a single bag, what percent of the marbles in the

Gwar [14]

Google the question to find the answer

6 0

3 years ago

A rectangular swimming pool is 40 feet long and 20 feet wide. The pool is bordered by square tiles that are x feet in length sur

olga2289 [7]

Answer:

(40 + 2x)feet

Step-by-step explanation:

see attachment for the figure.

Let 'L' represents the length of the rectangular swimming pool i.e 40ft wide.

and pool is bordered by square tiles that are x feet in length surrounding the pool

therefore,

In order to find the longest side of the pool and the tile border, take the sum of length of the swimming pool i.e 40 adding two times the wide of the square tiles

(40+2x)feet.

6 0

4 years ago

The equation d=4-1/15t represents your distance from home, d, for each minute you walk, t. If you graphed this equation, determi

lara [203]

Answer: the slope is -1/15 and it means that the distance from home decreases 1/15 units per minute of walk, which indicates the your are going home.

Explanation:

The equation d = 4 - (1/5)t has these features:

it is a linear (first degree) equation/
d is the dependent variable, distance from home.
t is the independent variable, minutes of walk
4 is the constant term and it is the value of d when t = 0, which means that it is the vertical axis intercept and represents the initial distance from home.
- ( 1/15) is the coefficient of the independent variable, it is the slope of the equation, and means the rate of change of the distance per minute of walk.
this slope, since it is negative, means that the distance decreases as times goes on. It means that each minute of walk the distance decreases 1/15 unit.
you can find when the distance is zero, by doing the variable d = 0:

d = 0 = 4 - (1/15)t ⇒ t = 4×15 = 60 min.

The given equation, d = 4 - (1/5)t is a linear equation, whose y-intercept form is y = mx + b.

m is the slope, therefore it is - 1/15.
4 is the y-intercept, therefore it is 4.

The domain of the function is the interval [0, 60], meaning that those are the minutes of the walk.

The range of the function is the interval [4, 0] meaning that the distance goes from 4 to 0 units.

You have plenty information to do the graph:

label the horizontal axis t in minutes
do marks at 0, 5, 10, 15, 20, 25, .... up to 60 on the horizontal axis
lable the vertical axis d
do marks at 4, 3, 2, 1, on the vertical axis
draw the points (0, 4) and (60,0)
draw a segment joining those two points.

You can see the graph in the image attached.

7 0

3 years ago