All categories

3 years ago

A box contains 28 balls of which 7 are red, 7 are blue, 14 are green.

Mathematics

1 answer:

djverab [1.8K]3 years ago

4 0

Answer:

1 /4

Step-by-step explanation:

Given that :

Number of red = 7

Number of Blue = 7

Number of green = 14

Total number of balls = 28

Probability of picking a ball that is neither red nor green.

Probability = required outcome / Total possible outcomes

P(neither red nor green) = P(picking a blue ball) = 7 / 28 = 1/4

You might be interested in

Tripp and Rico are two dogs. Tripp weighs exactly 35 pounds more than Rico. Together, they weigh exactly 49 pounds. How much doe

babymother [125]

Call the weights of the two dogs $t$ and $r$ .

We know that Tripp weights 35lbs more than Rico, or:
$t=r+35$

We also know that the total weight of both dogs is 49lbs.:
$t+r=49$

Now, by substitution:
$(r+35)+r=49$
$2r+35=49$
$2r+35-35=49-35$
$2r=14$
$r=\frac{14}{2}$
$r=7$
Rico weighs 7lbs.

Then:
$t=r+35$
$t=7+35$
$t=42$
Tripp weighs 42lbs.

To check our work:
$t+r=49$
$42+7=49$
$49=49$ CHECK!

5 0

3 years ago

If Michael invests $2000 in the bank at a rate of 5.5% for 6 years how much interest will he make?

Natalija [7]

Answer:

intereste = 660

Step-by-step explanation:

$interest \: = \frac{2000 \times 5.5 \times 6}{100} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{66000}{100} \\ \: \: \: \: \: \: \: \: \: \: \: = 660 \\$

plz..

mark it as a brilliant answer

8 0

3 years ago

PLEASE FOR 100 POINTS!!! PLEASE!!!

tiny-mole [99]

Answer:

$\Large \boxed{\sf 956.56 \ mm^2}$

Step-by-step explanation:

Surface area → area of 2 bases + area of 6 rectangles

Area of base is given

Area of rectangle → length × width

$\left(2\cdot 166.28\right)+\left(8\cdot 13\cdot 6\right)=956.56$

3 0

3 years ago

Read 2 more answers

Francisco invested 5,000 into an account that earns 3% compounded quarterly. How many times will Francisco earn interest after k

suter [353]

Answer:Amount = 10,002.21

Step-by-step explanation:4 x 5 = 20 times

2.-

Principal = 5,000

Interest rate per yr = 3%

Compounded times per yr = 4

Time in years = 5

The formula is amt = p*(1 + r/n) ^ (n*t),

thus

Amount = 5,805.92

3.-

If Time in years = 23.2

then

Amount = 10,002.56

4.-

Principal = 5,000.00

Interest rate per yr = 5.82%

Compounded times per yr = 4

Time in years = 12

5 0

3 years ago

Read 2 more answers

Change 1/7 / 4/21 to a ratio?<br>

sergeinik [125]

Answer:

3:4

Step-by-step explanation:

(1/7)/(4/21) = (1/7)×(21/4) = 3/4 = 3:4

6 0

3 years ago