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kvv77 [185]
3 years ago
14

John has $20.00 to spend for his mother's birthday. A string of pearls and a pair of pearl earrings costs $25.00. They are on sa

le for 30% off. How much money will John have left?​
Mathematics
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

2.50

Step-by-step explanation:

30% of 25 is 7.50 take that away from 25 gives you 17.50 take that away from 20 gives you 2.50

You might be interested in
Which ordered pair is a solution of the equation?<br> y = -3x-4.
geniusboy [140]

Answer:

B. Only (-3,5)

Step-by-step explanation:

1. Plug in the x values from the answer choices  and see if it gives you the y-value in the answer choices.

A. y=-3(-2) - 4

= 6 - 4

y = 2

The ordered pair for answer A is (-2,4) where the y-value is 4. Well, when you plugged in -2 for x you got 2, not 4. So A can't be the right answer.

B. y=-3(-3) - 4

= 9- 4

y = 5

The y-value in this ordered pair (-3,5) is indeed 5, so this answer holds true.

Therefore, the answer is B because it is the only ordered pair that has the correct solution.

8 0
3 years ago
A recent poll of 1971 home owners in West Virginia showed that the average price of a house in the U.S. is $319,000
siniylev [52]

Answer:

A) Sample statistic

Step-by-step explanation:

A sample statistic is a number computed from values that belongs to a sample, to represent a whole population.

In this case the sample is the home owners in West Virginia that respond this poll in 1971, and the population is U.S.

3 0
3 years ago
4. Find each quotient. a.18/-3 b.-5/-1 c.24/-6 d.-10/-1 e.-25/5 f.8/-2
Nataly_w [17]

Answer:

Step-by-step explanation:

a.18/-3  = (-6)

b.  -5/-1 = 5

c. 24/-6 = (-4)

d. -10/-1  = 10

e. -25/5 =(-5)

f.    8/-2 = (-4)

In multiplication and division, if there are are odd number of negative signs, the result will have negative sign.

If there are even number of negative signs, the the result will have positive sign

6 0
3 years ago
Usted esta tratando de manejar una inversion con un valor actual de $ 10,000 dentro de 10 años al 5% con acumulación anual. ¿ Cu
Rainbow [258]

Answer:

$6,139.1

Step-by-step explanation:

Using the compound interest formula;

A = P(1+r)^t

P is the amount invested

A is the amount = $10000

r is the rate = 5%

t is the time = 10years

10000 = P(1+0.05)^10

10000 = P(1.05)^10

10,000 = P(1.6289)

Swap

P(1.6289) = 10,000

P = 10,000/1.6289

P = 6,139.1

Hence I need to invest $6,139.1

3 0
3 years ago
A blueprint of an apartment is shown below. What is the actual length of the longest wall in the living room in feet? 0.5 inch :
jarptica [38.1K]

Answer:

36 feet long.

Step-by-step explanation:

If the longest wall in the living room is referring to the side that I have drawn over in white and red in the attached image, or if it is the leftmost wall, then that wall is 36 feet long. For every half inch, it is 6 feet, so because there are 6 'half inches' in 3, you multiply 6 feet by the 6 half inches there are, and get 36. There are simpler ways to solve it but I can't take a picture of my work, so I hope this helps. Good luck.

3 0
3 years ago
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