All categories

3 years ago

a jar contains 30 red, 40 blue, and 50 white buttons. you pick one button at random, find the probability that it is red or blue

Mathematics

2 answers:

abruzzese [7]3 years ago

5 0

Answer:

0.58 rounded to the nearest hundredths

Step-by-step explanation:

30+40+50=120

now add red+blue

30+40=70

70/120

pls mark me brainliest

Afina-wow [57]3 years ago

4 0

Answer: 25/120

Step-by-step explanation: if you do a proportion with x over 100 alongside 30 over the total 120 then solve. (30 times 100 divided by 120 to solve for x) you get 25!

You might be interested in

3 soccer balls and 5 more how many are there

vodomira [7]

Answer:

Step-by-step explanation:

3+5=8

6 0

2 years ago

Martine’s town is building a volleyball court based on a scale drawing that is 40cm to 80cm and uses the scale 1cm:22.5cm write

never [62]

Answer:

$y=22.5x$

Step-by-step explanation:

we have that

The scale drawing is

$\frac{1}{22.5}\frac{cm}{cm}$

we know that

Using proportion find out the actual dimensions of the volleyball court

Let

x -----> drawing court lengths in cm

y ----> court lengths in cm

For x=40 cm

$\frac{1}{22.5}\frac{cm}{cm}=\frac{40}{y}\frac{cm}{cm}\\\\y=40*22.5\\\\y=900\ cm$

For x=80 cm

$\frac{1}{22.5}\frac{cm}{cm}=\frac{80}{y}\frac{cm}{cm}\\\\y=80*22.5\\\\y=1,800\ cm$

Find the equation for the proportional relation ship between drawing court lengths x in centimeters and court lengths in y centimeters

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

For x=40 cm, y=900

substitute

$k=y/x$ -----> $k=900/40=22.5$

The equation is

$y=22.5x$

5 0

3 years ago

phil smith is a car salesman. last week. his total sales amounted to $27,650.00, and he received $1,382.50 in commission. What i

Korvikt [17]

20$ a car (ssssppppaaacccceee)

7 0

2 years ago

A train accelerates at an average rate of 0.33 meter per second squared, and the

ANTONII [103]

Answer:

I don't know

Step-by-step explanation:

please mark me as the brainlist

3 0

2 years ago

NEED HELP ASAP!! WILL MARK BRAINLIEST!!!!

dmitriy555 [2]

A = 11/5, let me know if you need me to tell you how i got it (show my work)

4 0

3 years ago