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evablogger [386]

3 years ago

14

A box contains 4 red and 5 green marbles. if 6 marbles are drawn without replacement, what is the expected number of red marbles

?

2 answers:

qaws [65]3 years ago

6 0

The expected number is 2 marbles

cricket20 [7]3 years ago

6 0

I hope this helps i believe it is 1/3<span />

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In triangle ABC, AC =24, the measure of angle A = 30 degree , and the measure of angle B = 45 degree . Find the area of this tri

andriy [413]

Answer:

142.932

Step-by-step explanation:

given that in triangle ABC, AC =24

Angle A = 30 and Angle B =45

If we draw altitude from C, we get

h = 24sin 30 = 12

Since BC = h (45, 45,90 triangle)

BC=12

By sine formula for triangle

$\frac{12}{sin30} =\frac{AB}{sin(180-45-30)} \\AB = 24 sin 105 = 23.1822$

Area of triangle

= $1/2 (23.1822)(12)\\= 142.932$

6 0

3 years ago

It takes an ant farm 6 days to consume 3/8 of an apple. (Show all work) At that rate, in how many days will the ant farm cons

Lana71 [14]

Answer: 48 days

Step-by-step explanation:

Given

Ant takes 6 days to consume $\dfrac{3}{8}$ of an apple

Using unitary method

$6\ \text{days}\rightarrow \quad \frac{3}{8}\ \text{of an apple}\\\\1\ \text{apple takes}\rightarrow \quad \frac{8}{3}\times 6=16\ \text{days}\\\\3\ \text{apples take}\rightarrow\quad 16\times3=48\ \text{days}$

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3 years ago

A line passes through (8,2) and (11,-13) write the equation of thr line in standerd form

docker41 [41]

Answer:

Step-by-step explanation:

(8,2),(11,-13)

slope(m) = (-13 - 2) / (11 - 8) = -15/3 = -5

y = mx + b

slope(m) = -5

(8,2)...x = 8 and y = 2

now we sub and find b, the y int

2 = -5(8) + b

2 = -40 + b

2 + 40 = b

42 = b

so ur equation is : y = -5x + 42...now we need it in standard form

Ax + By = C

y = -5x 42

5x + y = 42 <====

8 0

4 years ago

Alex777 [14]

Answer:

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<em />

6 0

4 years ago

Help 6th grade math i will give brainliest

andriy [413]

Answer:

1) 125

2) 1

3) 27

Step-by-step explanation:

1) 5*5*5=

125

2) whenever there is an exponent of 0, the number is 1

3) 3*3*3=

27

8 0

3 years ago