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2 years ago

Help me pleaseeeeeeeeeeeeeeeee

Mathematics

1 answer:

Mademuasel [1]2 years ago

4 0

Answer:

0.84

Step-by-step explanation:

From the given histogram we can state that

$P(x=1)=0.32;$
$P(x=2)=0.24;$
$P(x=3)=0.28;$
$P(x=4)=0.16.$

Note that the probability

$P(1\le x\le 3)=P(x=1)+P(x=2)+P(x=3)=0.32+0.24+0.28=0.84.$

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Maggie is displaying paperback and hardback books on her book shelf. The ratio of hardback books to total books is 5 to 13. Whic

lubasha [3.4K]

Answer:

Total Paperback books = 8x , where x is any positive number

Step-by-step explanation:

Let

The total books are = 13x ; where x is any positive number

As given,

The ratio of hardback books to total books is 5 to 13.

⇒Hardback books = $\frac{5}{13}$ × Total books

⇒Hardback books = $\frac{5}{13}$ × 13x = 5x

So, Paperback books = Total books - Hardback books

= 13x - 5x

= 8x

⇒Total Paperback books = 8x

8 0

2 years ago

Most plumbing companies charge a fee to come to your house plus a charge per hour of work. The fees and charges for two plumbing

lord [1]

Answer:

Company A: $y=40x+50$

Company B: $y=50x+25$

Step-by-step explanation:

The initial fee is the y-intercept, as that is the cost at x = 0, or the cost before any time has passed. Afterwards, the rate the cost increases is the slope.

Linear equation in slope-intercept form:

$y=mx+b$

where m is the slope and b is the y-intercept.

Company A charges $50 up front and $40 per hour afterwards, so the equation would be:

$y=40x+50$

Company B charges $25 up front and $50 per hour, so:

$y=50x+25$

7 0

2 years ago

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tia_tia [17]

I think f is the right answer because of how 128/4 is 3 and you need to find the area of the room.

7 0

3 years ago

One millilitre has about 15 drops. One drop of

Ira Lisetskai [31]

Answer:

25,576,050 water molecules

Step-by-step explanation:

multiply 1.67 by 1021 = 1705.07

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Now multiply 25,576.05 by 1000 (thats how many milliliters are in 1 liter) = 25,576,050

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3 years ago

Solve the equation for the unknown variable<br> b^3=−8 <br> what dose b =

Agata [3.3K]

Answer:

b = -2

Step-by-step explanation:

Take the cube root of both sides of the equation.

b^3 = (-2)^3

b = -2

_____

There are two other complex solutions. It isn't clear from the problem statement whether you are interested in those or not. They are 1±i√3. They can be found by factoring b^3+8 = 0 as (b+2)(b^2 -2b +4) = 0. They are the roots of the quadratic.

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3 years ago