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il63 [147K]
3 years ago
15

A bag contains 6 RED beads, 3 BLUE beads, and 11 GREEN beads. If a single bead is picked at random, what is the probability that

the bead is RED or GREEN?
Mathematics
1 answer:
Anna11 [10]3 years ago
6 0

Answer:

17/20

Step-by-step explanation:

Total no. of beads = 6 + 3 + 11 = 20

We need RED or GREEN bead .

So no. of beads needed = 6 + 11 = 17

So probability of getting GREEN or RED beads = 17/20

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Jessica ordered 10 bouquets of tulips, 4 bouquets of roses, and 6 bouquets of lilies for a total of $670. The combined cost to b
LUCKY_DIMON [66]

Answer:C

Step-by-step explanation:

Let x represent the cost of a bouquet of tulips.

Let y represent the cost of a bouquet of roses.

Let z represent the cost of a bouquet of lilies.

Jessica ordered 10 bouquets of tulips, 4 bouquets of roses, and 6 bouquets of lilies for a total of $670. This means that

10x + 4y + 6z = 670 - - - - - - - - - 1

The combined cost to buy one of each type of bouquet is $115. This means that

x + y + z = 115- - - - - - - - - 2

If a bouquet of lilies costs $5 more than a bouquet of tulips, it means that

z = x + 5 - - - - - - - - - 3

Substituting equation 3 into equation 1 and equation 2, it becomes

10x + 4y + 6(x+5)= 670

10x +4y + 6x + 30 = 670

16x + 4y = 670 - 30

16x + 4y = 640 = - - - - - - - - - 4

Substituting equation 3 into equation 2, it becomes

x + y + x + 5 =

2x + y = 115 - 5

2x + y = 110 - - - - - - - - - 5

Multiplying equation 5 by 4 , it becomes

8x + 4y = 440 - - - - - - - - - 6

Subtracting equation 6 from equation 4, it becomes

8x = 200

x = 200/8 = 25

2x + y = 110

2×25 + y = 110

50 + y = 110

y = 110 - 50 = 60

z = x + 5

z = 25 + 5 = 30

The cost of one bouquet of tulips is $25, one bouquet of roses is $60, and one bouquet of lilies is $30.

8 0
3 years ago
If line b is perpendicular to line a, and linec
madam [21]
Since both lines c and b are perpendicular to line a, line c and b are parallel.

Using the two points on line b, we can count “up 5, right 5” to find the slope of line b to be 5/5 or 1.

Since line b has a slope of 1 and line c is parallel, it must also have a slope of 1.
4 0
2 years ago
Sean is paid biweekly. His annual salary is $42,500. What is his biweekly salary to the nearest cent?
Inga [223]
He will receive 26 paychecks per year.
3 0
3 years ago
Read 2 more answers
Today a car is valued at $42000. The value is expected to decrease at a rate of 8% each year. What is the value of the car expec
aleksandr82 [10.1K]
The formula is
A=p (1-r)^t
A future value?
P current value 42000
R rate of decreases 0.08
T time 6 years
A=42,000×(1−0.08)^(6)
A=42000 (0.92)^6
A=25,466.91 round your answer to get 25467

Hope it helps!
7 0
3 years ago
The radius of the earth is 6,380 kilometers. what is the radius of the earth in centimeters?
fenix001 [56]

To solve for the radius of the Earth in centimetres, we know the following information:

1 km = 1000 m

1 m = 100 cm

 

Therefore,

radius = 6,380 km * (1000 m / km) * (100 cm / m)

<span>radius = 638 x 10^6 cm</span>

6 0
3 years ago
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