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A jar has 4 red marbles 7 blue marbles and 8 yellow marbles what is the probability of randomly selecting a marble and getting a blue marble?Please help!!!!

Answers

Answer 1

Answer:

Answer: 7/19

Explanation:

There are 7 blue marbles out of 4+7+8 = 11+8 = 19 total

The probability of selecting blue is therefore 7/19

We cannot reduce 7/19 any further because 7 and 19 have no common factors other than 1.

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Pls help, and don’t give random answers just so you can have points.

Answers

i believe it’s C! because it doesn’t start out as 4 like in answer B but it still doubles

how many pounds of chamomile tea that costs 18.20 per pound must be mixed with 12lb of orange tea that costs 12.25 per pound to make a mixture that costs 14.63 per pound

Answers

8 pounds of chamomile tea must be mixed to make a mixture that costs 14.63 per pound.

Step-by-step explanation:

We are given the following in the question:

Chamomile tea:

Unit cost = 18.20 per pound

Amount = x pounds

Total cost =

$18.20* x = 18.20x$

Orange tea:

Unit cost = 12.25 per pound

Amount = 12 pounds

Total cost =

$12.25* 12 = 147$

Total mixture:

Unit cost = 14.63 per pound

Amount = (12+x) pounds

Total cost =

$14.63* (12+x) = 175.56 + 14.63x$

We can write the equation that cost of mixture is equal to cost of chamomile tea and orange tea.

$18.20x + 147 = 175.56 + 14.63x\n\Rightarrow 18.20x- 14.63x = 175.56-147\n\Rightarrow 3.57x = 28.56\n\Rightarrow x = 8$

Thus, 8 pounds of chamomile tea must be mixed to make a mixture that costs 14.63 per pound.

9. In City A, the temperature rises 9 from 8 A.M. to 9 A.M. Then the temperature drops 8 from 9 A.M. to 10 A.M. In City B, the temperature drops 5º from 8 A.M. to 9 A.M. Then the temperature drops 4º from 9 A.M. to 10 A.M. a. What expression represents the change in temperature for City A? b. What integer represents the change in temperature for City A? c. What expression represents the change in temperature for City B? d. What integer represents the change in temperature for City B? e. Which city has the greater change in temperature from 8 A.M. to 10 A.M.? 10.

Answers

a.The expression for temperature change in City A is 9 + (-8)

b.The amount the temperature changes for City A = 1°F

c.The expression for temperature change in City B is -1 + (-3) = -4°F

d.The amount the temperature changes for City B = -4°F

What is temperature?

The degree of hotness or coldness of an object is called as temperature.

Now it is given that,

In City A,

rise in temperature from 8 am to 9 am = 9°F

drop in temperature from 9 am to 10 am = 8°F

In City B,

drop in temperature from 8 am to 9 am = 1°F

drop in temperature from 9 am to 10 am = 3°F

a.The expression for temperature change in City A

rise in temperature = +9°F

drop in temperature = -8°F

∴the expression for change in temperature for City A = 9 + (-8)

b.The amount the temperature changes for City A = 9 + (-8)= 1°F

c.The expression for temperature change in City B

drop in temperature = -1°F

drop in temperature = -3°F

∴the expression for change in temperature for City A = -1 + (-3)

d.The amount the temperature changes for City B = -1 + (-3)= -4°F

Hence,the required answers are,

a.The expression for temperature change in City A is 9 + (-8)

b.The amount the temperature changes for City A = 1°F

c.The expression for temperature change in City B is -1 + (-3) = -4°F

d.The amount the temperature changes for City B = -4°F

More about temperature change :

brainly.com/question/18365386

#SPJ2

Help---I dont understand!! :(

Answers

Answer:

it should be c

Step-by-step explanation:

on edg hope this helps

The area of a rectangular garden is 6290 ft 2. If the width of the garden is 74 feet, what is its length?

Answers

Answer:

Step-by-step explanation:

Is the relationship shown in the table at the right proportional? If so, use it to complete a proportions web. If not, explain why it is not40 Points to whover answers them all

Answers

yes it would be proportional because it goes through the origin

Answer:

yes it would be proportional because it goes through the origin

Step-by-step explanation:

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