Ask question

Ask question

All categories

3 years ago

9

katy paid 23 dollars to have her haircut.she left a 20% tip. Then she bought shampoo for $6. what was the total amount that she

spent

1 answer:

murzikaleks [220]3 years ago

4 0

Answer$33.60

Step-by-step explanation:

First I added 23 and 6 to get $29

Then I figured out that 20 percent of 23 was 4.6 and added that to 29.

I came out with an answer of 33 dollar and sixty cents.

You might be interested in

The members of a club hire a bus for $2100.seven members withdraw from the club and the remaining members have to pay $10 more e

dlinn [17]

42 members originally agreed to go on the bus.

5 0

3 years ago

What is sin45°*sin30°*cos60°

NNADVOKAT [17]

Answer:

$\frac{\sqrt{2} }{8}$

Step-by-step explanation:

Using the exact values of the given trig functions, then

sin45° × sin30° × cos60°

= $\frac{\sqrt{2} }{2}$ × $\frac{1}{2}$ × $\frac{1}{2}$ = $\frac{\sqrt{2} }{8}$

6 0

2 years ago

Fishermen fishing for spiny lobster are allowed to keep only lobsters with a carapace length of 3.25 inches or longer. (Than car

ser-zykov [4K]

Answer:

16%

Step-by-step explanation:

First we start by solving for the z score

We have the following information

x = 3.25

Standard deviation = sd = 2.25

Mean = 5.50

Z = (x - mean)/sd

z = 3.25 - 5.50/2 25

z = -1.00

If we look this up in the standard normal distribution table,

P(z<-1.00) = 0.1587

Which when approximated gives us

16%

Therefore approximately 16% of lobsters will have to be returned back to the sea.

4 0

3 years ago

Assume you are planning a picnic for lunch, but when you woke up there were rain clouds in the sky. If 50% of rainy days start w

Tasya [4]

Answer:

0.25 = 25% probability that it will rain today and ruin your picnic

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Cloudy skies

Event B: Rain

20% of all days start with clouds in the air

This means that $P(A) = 0.2$

50% of rainy days start with rain clouds in the air

50% of 10%. So

$P(A \cap B) = 0.5*0.1 = 0.05$

What is the probability that it will rain today and ruin your picnic

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05}{0.2} = 0.25$

0.25 = 25% probability that it will rain today and ruin your picnic

3 0

2 years ago

Complete the diamond and submit your answer as a file upload.<br> 9<br> -10

Novay_Z [31]

Answer:

-1?

Step-by-step explanation:

4 0

2 years ago