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IrinaK [193]
3 years ago
15

Justin was looking for a birthday card for his sister. There were 9 funny cards, 7 serious cards, and 5 musical cards. How many

choices does Justin have for a birthday card? A. 21 B. 68 C. 80 D. 315
Mathematics
2 answers:
madam [21]3 years ago
5 0
Just add.  7 + 9 + 5 = 21  So the answer is A.21
sattari [20]3 years ago
4 0
The answer is A. 21. Hope this helps! Mark brainliest!
You might be interested in
The girls soccer team won 10 games and the lost 2. And the boys soccer team won 12 games and lost 3. What is the ratio of the gi
worty [1.4K]
5 to 1 because they lost 10 games in the time they lost 2 games so it would in smallest form at 5 to 1
4 0
4 years ago
The sweet sweet shop charges $8.45 for a pound of chocolate covered almonds. If Britain buys 1.5 pounds of the almonds, how much
choli [55]

Answer:

$12.68

Step-by-step explanation:

Multiply the price of one pound by the amount of pounds you're buying,

8.45 x 1.5

= 12.675

Round up

= 12.68

5 0
3 years ago
Please help with algebra!!! ill give brainliest
sattari [20]
Hello :) please refer to the pic below!

7 0
3 years ago
Read 2 more answers
Wes lives in Colorado, which has a state income tax
VashaNatasha [74]

The answer is $41.44.

You take $895× 4.63%= $41.4385.

7 0
3 years ago
An unfair coin with​ Pr[H] = 0.2 is flipped. If the flip results in a​ head, a marble is selected at random from a urn containin
satela [25.4K]
Normally when dealing with coins the probability of getting heads or tails is 0.5 each. However in this case since its an unfair coin, the probability of getting heads is 0.2. 
H - head 
T - tails
R - red marble
pr (H) = 0.2
urn
6 red and 4 blue
pr (T)   = 0.8
urn
3 red and 5 blue

when heads is obtained 
red - 6/10 -0.6
blue - 4/10 - 0.4
therefore when multiplying with 0.2 probability of getting heads
pr (R ∩ H) red - 0.6*0.2 = 0.12

when tails is obtained 
red - 3/8 - 0.375
blue - 5/8 - 0.625
when multiplying with 0.8 probability of getting tails
pr (R ∩ T) red - 0.375 * 0.8 = 0.3

using bayes rule the answer can be found out, 
the following equation is used;
pr (H | R) = pr (R ∩ H) / {pr (R ∩ H) + pr (R ∩ T)}
               = 0.12 / (0.12 + 0.3)
               = 0.12 / 0.42
               = 0.286
the final answer is 0.286
6 0
3 years ago
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