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Valentin [98]
3 years ago
10

kenneth a competitor in cup stscking claims that his average stacking time is 8.2 seconds. during a practice session kenneth has

a sample stacking time mean of 7.8 seconds based on trials. at the 4% sugnificant level does the data provide sufficient evidence to conclude
Mathematics
1 answer:
marysya [2.9K]3 years ago
7 0

Answer:

el semurio

Step-by-step explanation:

jejeje

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5x + 6 = 3x +7<br> Give your answer as a fraction.
morpeh [17]

Answer:

5x + 6 = 3x + 7

-5x           -5x

6 = -2x + 7

-7         -7

-1 = -2x

divide both sides by -2

0.5 = x

5 0
3 years ago
$56 they are 25% off wants to know what is the discount price
iVinArrow [24]

Answer:

$42

Step-by-step explanation:

This is an example of a percentage decrease.

To work out the percentage decrease you would first need to convert the percentage of 25% into a decimal. You can do this by dividing the percentage  of 25 by 100, this gives you 0.25. This is because percentages are out of 100.

The next step is to minus 0.25 from 1, this gives you 0.75. This is because we are working out the percentage decrease.

To work out the discounted price you would multiply the amount of $56 by 0.75, this gives you $42.

1) Divide 25 by 100.

25/100=0.25

2) Minus 0.25 from 1.

1-0.25=0.75

3) Multiply $56 by 0.75.

56*0.75=42

7 0
3 years ago
What is better 20$ or 20% off
ser-zykov [4K]
Probably $20 dollars because depending on how much the item cost 20% could only be worth $5 for example 20% off of an item that cost $60 is only $12
5 0
4 years ago
Read 2 more answers
A library has 300 feet of shelves for books. The library will increase the
Daniel [21]

Answer: 54

Step-by-step explanation:

Well, divide 300 by 100, which gets you 3. So 3 feet of book shelves = 1%

So 3x18=54

8 0
3 years ago
Matthew deposits $400 into an account that earns 7% interest compounded quarterly. What is the balance in his account after 10 y
user100 [1]

Answer:

$787

Step-by-step explanation:

In terms of interest

To find the multiplier using '7% more' continues as follows

100% + 7% = 107%

107/100 = 1.07 (multiplier)

Add the ten years as a power to the multiplier

1.07^10

And multiply this by $400

400 x 1.07^10 = 786.860542916

To the nearest dollar = $787

7 0
3 years ago
Read 2 more answers
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