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Wittaler [7]
4 years ago
7

Rodrigo buys a jacket that is on sale 1/4 off the original price of $80. he has a coupon for an additional 10% off. how much doe

s rodrigo pay for the jacket?
A.$49.50
B.$52.00
C.$54.00
D.$18.00
Mathematics
1 answer:
Nookie1986 [14]4 years ago
5 0
The answer would be D. If you would like me to show my work I will, please reply if this is the case. I hope this helps you.
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Jason wants to walk the shortest distance to get from the parking lot to the beach. a.How far is the spot on the beach from the
lara31 [8.8K]

3 RIGHT TRIANGLES

1 big right triangle is divided into 2 smaller ones. Medium and small.

<span> a.How far is the spot on the beach from the parking lot? </span>

Medium triangle: long leg = 32 m ; short leg = x

Small triangle: long leg = x ; short leg = 18m

32/x = x/18

32*18 = x*x

576 = x²

√576 = √x²

24 = x    

Parking lot to the beach is 24 meters.

<span>b. How far will he have to walk from the parking lot to get to the refreshment stand?</span>

Use Pythagorean theorem:

Medium triangle: long leg = 32 m ; short leg = 24 m ; hypotenuse = ?

32²+ 24² = c²

1024 + 576 = c²

1600 = c²

√1600 = √c²

40 m = c

Parking lot to refreshment stand is 40 meters.

5 0
4 years ago
The mean income per person in the United States is $50,000, and the distribution of incomes follows a normal distribution. A ran
sergij07 [2.7K]

Answer:

Yes. There is sufficient eveidence to support  the claim that Wilmington resident's earn more than the national average

Step-by-step explanation:

Given the following;

\alpha=Significance \ Level=0.05\\n=10\\\bar X=60000\\\ s=sample\  \sigma=10000

#We set our hypothesis as:

H_o:\mu\leq 50000\\H_a:\mu>50000

The rejection region of either hypothesis:

P(t>t_o)=0.05, we determine the critical values for this probability in the T distribution table;

t=1.833

=>We reject for all values greater than 1.833, t>1.833.

#We now determine the value of the test statistic as:

t=\frac{\bar X-\mu_o}{s/\sqrt{n}}\\\\=\frac{60000-50000}{10000/\sqrt{10}}\\\\=3.1623

We find that:

t=3.1623>1.833,\ \ \ Reject \ H_o

Hence, there is sufficient eveidence to support  the claim that Wilmington resident's earn more than the national average.

4 0
3 years ago
3500 lbs equals how many tons
andrew-mc [135]

Answer:

1.75 tons, one ton is 2000 pounds, and there are 1500 pounds left which is .75 of a ton. Hope this helps!

4 0
3 years ago
What is the value of s?
Luba_88 [7]

Step-by-step explanation:

Sum of angles in a triangle = 180°.

=> s° + (s/7 + 3)° + (s/7 - 3)° = 180°

=> 9/7 * s° = 180°

=> s° = 180° * (7/9) = 140°

Hence the value of s is 140.

6 0
3 years ago
Graph y=-3x +7 and the line that is<br> parallel to it that passes through (4,1).
Brums [2.3K]
Y = -3x + 13

Steps and the graph are on paper

6 0
3 years ago
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