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3 years ago

Becky is rolling a number cube with the number 1 through 6 what is the probability she will roll a 4 or 5

Mathematics

2 answers:

ryzh [129]3 years ago

8 0

1/6 since there are 6 sides, therefore, there is a 1/6 chance that any number will be rolled

liubo4ka [24]3 years ago

5 0

Probability of rolling 4: 1/6. Probability of rolling 5: 1/6. Since it is an “or” question, you add the probabilities. So 1/6+1/6=2:6= 1/3.

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of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled

Helga [31]

Answer:

20 people only buy dvds.

Step-by-step explanation:

There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:

people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds

people who only buy blu rays = 300 - 280 = 20

We can now calculate the amount of people who only buy dvds and that is:

people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)

people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people

3 0

3 years ago

Would appreciate the help

raketka [301]

Answer:

x° = 37°

Step-by-step explanation:

* Lets revise some facts of a circle

- The secant is a line intersect the circle in two points

- If two secants intersect each other in a point outside the circle,

then the measure of the angle between them is half the difference

of the measures of their intercepted arcs

* Now lets solve the problem

- There is a circle

- Two secants of this circle intersect each other in a point outside

the circle

∴ The measure of the angle between them = 1/2 the difference of the

measures of their intercepted arcs

∵ The measure of the angle between them is x°

∵ The measures of their intercepted arcs are 26° and 100°

- Use the rule above to find x

∴ x° = 1/2 [ measure of the large arc - measure of small arc]

∵ The measure of the large arc is 100°

∵ The measure of the small arc is 26°

∴ x° = 1/2 [100 - 26] = 1/2 [74] = 37°

∴ x° = 37°

4 0

3 years ago

A 4-kilogram ham costs $16/kg. Find the cost per pound.

dem82 [27]

1kg is 2.20462 pounds
So 4kgs are 8.81849
Divided by $16 would equal 0.551155625
Therefore Each pound will cost 0.551155625

4 0

3 years ago

RoseWind [281]

Answer:

C. I & III

Step-by-step explanation:

I simplifies to ...

2(6x +15 -5x) +4 = 40

12x +30 -10x +4 = 40

2x +34 = 40

II simplifies to ...

40 = 2(15 -x) +4

40 = 30 -2x +4

40 = -2x +34 . . . . . . not equivalent to I (sign of x-term is different)

III simplifies to ...

12x +30 -10x +4 = 40

2x +34 = 40 . . . . . . equivalent to I

___

I & III are equivalent

5 0

3 years ago

Help. Does anyone know how to do this?

tatuchka [14]

Answer:

x = 12, so PTQ = 40 deg

Step-by-step explanation:

first, because the two are vertically opposite, they are equal, write a formula for this:

x + 28 = 2x + 16 (minus 2x from both sides)

-1x + 28 = 16 (minus 28 from both sides)

-1x = -12 (divide both sides by -1)

x = 12

sub into formula:

12 + 28 = 40

8 0

3 years ago