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IRISSAK [1]
3 years ago
14

PROBABILITY PROBLEM! NEED HELP AND EXPLAIN/SHOW WORK

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
8 0
10 + 5 + 1 = 16 - all balls
The probability that the first ball is red:
P(R)=\dfrac{10}{16}=\dfrac{5}{8}
The probability that the second ball is black:
P(B)=\dfrac{1}{15}
Together:
P(R)\cdot P(B)=\dfrac{5}{8}\cdot\dfrac{1}{15}=\dfrac{1}{24}
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A Rectangle is removed from a right triangle to create the shaded region below. Find the area of the shaded region be sure to in
Scorpion4ik [409]

The given shapes area is found to be 4 square yards.

Step-by-step explanation:

Step 1; To determine the area of an indefinite shape we must divide it into the shapes that we know. The shape that is given can be split into a triangle with a rectangle in it.

Step 2; Any given triangles area is half the multiplication of its base value and its height value. In the given diagram, the base of the triangle measures a length of 5 yards and the length from base to top is 4 yards

Area of the triangle = \frac{1}{2} * base * height = \frac{1}{2} * 5 * 4 = 10 square yards.

The given rectangle measures a length of 3 yards and a width of 2 yards. The area of any given rectangle is the multiplication of its length and width.

Area of the rectangle = Length * Width = 3 yards * 2 yards = 6 square yards.

Step 3; To find the total area of the shape we must subtract the the rectangle's area from the triangle's area.

Area of given shape = Area of the triangle - Area of the rectangle.

Area of given shape = 10 square yards - 6 square yards = 4 square yards.

7 0
3 years ago
Emilio throws a marshmallow into the air from his balcony. The height of the marshmallow (in feet) is represented by the equatio
irinina [24]

Answer:

Step-by-step explanation:

The height of the marshmallow (in feet) is represented by the equation h=−16t2+8t+48,

where t is the time (in seconds) after he throws the marshmallow.

The equation is a quadratic equation. When the marshmallow hits the ground, its height from the ground will be zero. Therefore

−16t^2+8t+48 = 0

- 2t^2 + t + 6 = 0

Multiplying through by the negative sign. It becomes

2t^2 - t - 6 = 0

2t^2 + 3t - 4t - 6 = 0

t(2t + 3) - 2(2t + 3) = 0

(t - 2)(2t + 3) = 0

t - 2 = 0 or 2t + 3 = 0

t = 2 or t = - 3/2

The time cannot be negative

So it will take 2 seconds to hit the ground

4 0
3 years ago
I'm failing my math class and need help ):
jek_recluse [69]
Take first number as x
 <span />second number is 3x
 <span />third number = 3x+5 <span> </span>

<span> </span> twice the third is 5 less than second, means second minus 2 times third is equal to five or 3x-2(3x+5)=5..........Answer is D
8 0
3 years ago
Two employees are filling crates. One fills
mina [271]
Calculate both of those per hour:
2/3 crate / hour
1.25 crates / 2 hours = 5/8 crates / hour

2/3 + 5/8 = 16/24 + 15/24 = 31/24 per hour =

124 / 24 crates in 4 hours = 5 (4/24) crates =

5 (1/6) crates per 4 hours


3 0
3 years ago
What is the x-intercept of the graph -4x=20
nataly862011 [7]

Answer:

-4x=20

x=20/-4

x=-5

maybe not sure

5 0
3 years ago
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