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3 years ago

Can somebody please help me with this question

Mathematics

1 answer:

aleksandr82 [10.1K]3 years ago

4 0

Answer:

An event can have a probability of 3/2 is not true

Step-by-step explanation:

The probability of an event happening is between 0 and 1 inclusive.

A probability of 1 means the event is certain to happen or 100%

You cannot have a probability greater than 1 so

An event can have a probability of 3/2 cannot happen

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What is x and y 2x-3y=-1,y=x-1?

kenny6666 [7]

Answer:

Step-by-step explanation:

2x-3x[x-1]

=2x-3x+1

=-x+1

7 0

3 years ago

Jo jo has a total amount of $12.45 in quarters and dimes in his pocket. he has a total of 60 coins. how many quarters and dimes

baherus [9]

Given:

Total number of coins (Quarters and dimes) = 60

Total amount = $12.45

To find:

The number of quarters and dimes.

Solution:

Let x be the number of quarters and y be the number of dimes.

We know that,

1 quarter = 0.25 dollar

1 dime = 0.10 dollar

Total coins: $x+y=60$ ...(i)

Total amount: $0.25x+0.10y=12.45$ ...(ii)

From (i), we get

$y=60-x$ ...(iii)

Putting this value in (ii), we get

$0.25x+0.10(60-x)=12.45$

$0.25x+6-0.10x=12.45$

$0.25x-0.10x=12.45-6$

$0.15x=6.45$

Divide both sides by 0.15.

$x=\dfrac{6.45}{0.15}$

$x=43$

Putting x=43 in (iii), we get

$y=60-43$

$y=17$

So, the number of quarters is 43 and the number of dimes is 17.

Therefore, the correct option is b.

8 0

2 years ago

Identify the percent of change as an increase or a decrease.

Svetllana [295]

If you are saying it is fractions a 4/5 to 3/5 then it is decreasing
but if you are saying it is fractions like 4/3 to 5/5 then it is well it is still decreasing

4 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Cleft%28%5Csqrt%7B3%7D%2B4%5Cright%29%5Cleft%281%2B%5Csqrt%7B3%7D%5Cright%29" id="TexFormula

kirza4 [7]

Answer:

$\huge\boxed{\sf 7 + 5\sqrt{3} }$

Step-by-step explanation:

$(\sqrt{3} +4)(1+\sqrt{3})\\\\= \sqrt{3}(1+\sqrt{3} )+4(1+\sqrt{3})\\\\= \sqrt{3} + (\sqrt{3} )^2 + 4 + 4\sqrt{3} \\\\= \sqrt{3} + 3+4+4\sqrt{3} \\\\= 7 + \sqrt{3} + 4\sqrt{3} \\\\Take \ \sqrt{3} \ common\\\\= 7 + \sqrt{3} (1+4)\\\\= 7 + \sqrt{3}(5)\\\\= 7 + 5\sqrt{3} \\\\\rule[225]{225}{2}$

Hope this helped!

4 0

2 years ago

The bed of a pickup truck measures 4 feet by 8 feet to the nearest inch, what is the length of the longest thin metal bar that w

Helga [31]

The bed of the truck is a rectangle, 4-ft wide and 8-ft long.

The diagonal of the rectangle is

   √ (4² + 8²)

   = √ (16 + 64)

   = √ (80)

   = 8.9442... feet

8.9442... feet = 8 feett 11.33 inches

Rounded to the nearest inch:    8 ft 11 in .

4 0

3 years ago