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Zigmanuir [339]
3 years ago
7

The expresssion is also equivalent to the cost of the item? c-0.25 c which expression is also equivalent to the cost of the item

? 1-0.25c 0.25c 0.75c 1-0.75c
Mathematics
1 answer:
MArishka [77]3 years ago
8 0

Answer:

0.75c

Step-by-step explanation:

If we have an expression as:

a*x + b*x

We can see that both terms in the expression, a*x and b*x have an x, so we can call the x a common factor and we can write an equivalent expression as:

a*x + b*x  = (a + b)*x

If we replace, for example, a by 2, b by 3 and x by 4, we can test the expression as:

2*4 + 3*4  = (2 + 3)*4

 8   +  12  = (5)*4

    20        = 20

Therefore, if we have the following expression:

c - 0.25*c

The expression that is equivalent is 0.75c and it is calculated as:

c - 0.25*c = (1 - 0.25)*c

c - 0.25*c = 0.75*c

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A bag of sweets contains 7 strawberry, 9 blueberry. Joe picks two
hjlf

Answer:

P = 21/80

P = 0.2625

Step-by-step explanation:

P=(\frac{7}{16} )(\frac{9}{15} )=\frac{63}{240} =\frac{21}{80}

Hope this helps

8 0
1 year ago
Jackson and derek have a lemonade stand. They sell lemonade in 12oz cups. They are hoping to sell at least 50 cups of lemonade.
siniylev [52]

To fill 50 12-fl oz cups, you need 50 * 12 fl oz = 600 fl oz

There are 128 fl oz in a gallon

600/128 = 4.6875

600 fl oz = 4.6875 gallons

600 fl oz is under 5 gallons, so 5 gallons is enough.

1 qt = 32 fl oz

17 qt = 17 * 32 fl oz = 544 fl oz

17 quarts is 544 fl oz, which is under the needed 600 fl oz, so 17 quarts is not enough.

Answer: 5 gallons

5 0
3 years ago
A square-shaped park has an area of 324 yd2. What are the dimensions of the park? I need a step by step answer.
o-na [289]

Answer:

12x27

width 12 yd and length 27 yd

Area = 12*27 = 324 sq yd

4 0
3 years ago
13. A bag contains 8 balls of which 2 are red and 6 are white. A ball is selected and not replaced. A
umka21 [38]

Answer:

The second ball would most likely be red and there are 5 red balls in the bag. And if you replaced the ball it would most likely be the same ball

Step-by-step explanation:

5 0
3 years ago
Transactions to a computer database are either new items or changes to previous items. the addition of an item can be completed
sashaice [31]

P(<100) = P((new or change) & <100) = P(new & <100) + P(change & <100)

... = P(<100 | new)*P(new) + P(<100 | change)*P(change)

... = 0.90*0.70 + 0.20*0.30

... = 0.63 + 0.06 = 0.69 . . . . probability of completing a transaction in < 100 ms

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