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anastassius [24]
3 years ago
12

Can you answer 21 please?!

Mathematics
2 answers:
just olya [345]3 years ago
4 0
We can set up the following equation:

4x + 4(5) = 54

X representa the cost of a salad, and the 4(5) shows how each time she left a tip of 5.

Now we solve:

4x + 20 = 54

Subtract 20 from each side:

4x = 34

Now divide by 4

X = 8.5

So the cost of each salad is $8.50

I hope this Helps!
Stells [14]3 years ago
3 0
54 x 4 = 216. Lets just ignore the $5 be cause everytime she ordered a salad it costed 54 dollars, and as you can see she ate there 4 times so 4 x 54 = 216 is your answer. <span />
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The two-way table below displays demographic data for the passengers aboard the Titanic.
meriva

Answer:

About 72%

Step-by-step explanation:

All you have to do is divide the number of children who traveled in third class (79) by the total number of children (109)

79/109=.724770642 OR 72%

5 0
3 years ago
Read 2 more answers
At a college, 72% of courses have final exams and 46% of courses require research papers. Suppose that 32% of courses have a res
Ghella [55]

Answer:

a) P(F UR) = P(F) +P(R) -P(F and R) = 0.72+0.46-0.32=0.86

b) P(FUR)' = 1-P(FUR)= 1-0.86 = 0.14

Step-by-step explanation:

Let's define the following events first:

F: The event that a course has a final exam.

R: The event that a course requires a research paper

From the info provided we have that:

P(F) = 0.72, P(R) =0.46 P(F and R) =0.32

So then we can create a Venn diagram as we can see on the figure attached.

a. Find the probability that a course has a final exam or a research project.

For this case we can find the probability like this:

P(F UR) = P(F) +P(R) -P(F and R) = 0.72+0.46-0.32=0.86

b. Find the probability that a course has NEITHER of these two requirements.

For this case we can use the complement rule and we can find the probability like this:

P(FUR)' = 1-P(FUR)= 1-0.86 = 0.14

And that's the same value obtained with the diagram.

8 0
3 years ago
Please help me need ASAP
solniwko [45]

Answer:

3)Quadratic

Step-by-step explanation:

Brainliest?

4 0
2 years ago
Sine theta equals square root of 3 over 2 find theta.
Alexxx [7]
Sin(theeta) = square root(3)/2
theeta = sin inverse [square root (3)/2]
theeta =  60 degrees
as seen from trignometric table
7 0
3 years ago
After all markdowns and discounts, Charlene’s prom dress cost her $22 before tax. The dress was on a rack labeled “50% off lowes
goldfiish [28.3K]

Answer:

%176

Step-by-step explanation:

1/4n x 1/2 = 22

Solve the equation and get 176.

7 0
3 years ago
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