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DedPeter [7]
3 years ago
15

the relative frequency that the traffic lights will show RED at road works is 0.2. Estimate how many times they will show RED ov

er the next 40 journeys.
Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
8 0
Only 8 times because you take .2 times 40

adell [148]3 years ago
7 0
Yes you multiply 40*0.2 and that would be 8.
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Bobby bought two shares of stock, which he sold for $96 each. If he had a profit of 20 percent on the sale of one of the shares
pashok25 [27]

Answer:

The correct option is c) a loss of $8.

Step-by-step explanation:

Consider the provided information.

If the selling price of two item is same and one item sold at a profit of x % and other at a loss of x % in that case total sale result loss:

To calculate the loss use the formula: Loss\ \%=(\frac{x}{10})^2\ \%

It is given that he had a profit of 20 percent on the sale of one of the shares but a loss of 20 percent on the sale of the other share, where the selling price is $96 each.

That means the total sale result will be a loss.

Now use the above formula by substitute x=20.

Loss\ \%=(\frac{20}{10})^2\ \%\\\\Loss\ \%=4\ \%

It is given that the sales price is $96 of each that means total sales price is:

$96+$96=$192

Let the cost price of the shares were x.

According to question: x-4% of x = 192

x-\frac{4}{100}\times x = 192\\\\x-0.04x = 192\\\\0.96x = 192\\x = 200

Hence, the cost price of the shares was 200.

Loss = Cost price -Sales price

Loss = $200 - $192

Loss = $8

Hence, the correct option is c) a loss of $8.

8 0
3 years ago
The volume of the prism shown in 60 cm Given the dimensions shown below, what would be the value of x ?
hodyreva [135]

Answer:

(3× - 2)(x - 1)

3x² - 3x - 2× -2

3x² - 5× - 2

3x² + × - 6× - 2

× (3x + 1) -2 (3× + 1)

(3× + 1) (× - 2)

8 0
3 years ago
One pump can fill a swimming pool in 72 hours. A second pump can fill the same pool in 60 hours. If
Studentka2010 [4]
I’m not sure but i think 66 hours because both pumps must fill half of the pool which would split the timing for each which would make pump 1 take 36 hours to fill half and pump two take 30 hours to fill the rest. when you add these hours it equals 66. i hope i helped :)
4 0
3 years ago
Solve this emergency i will mark you as brainliest
Umnica [9.8K]

Answer:

3/8 cups.

Step-by-step explanation:

2 tablespoons of sugar = 1/16 * 2 = 1/8 cup of sugar.

1/2 cup = 4/8 cups.

So the extra sugar required = 4/8 - 1/8

= 3/8 cups.

3 0
3 years ago
Read 2 more answers
I need help cause I got a b- in math
anygoal [31]

Answer:

2a plus 3/4b

Step-by-step explanation:

First distribute the fractions.

Second communitate variable a.

Third communitate variable b.

Finally simplify.

8 0
3 years ago
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