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3 years ago

Dan rolls 2 fair dice and adds the results from each. Work out the probability of getting a total more than 3.

Mathematics

1 answer:

faust18 [17]3 years ago

5 0

Answer:

the answer is 6/12 or 1/2

Step-by-step explanation:

so in a dice there are 6 sides as in 6 numbers so we can say

6×2= 12 sience the dice was rolled 2 times

then count all the numbers which is greater than 3

they are: 4, 5, 6

these 3 numbers ×2

3×2=6

so now the probability of this is 6/12

now we can reduce this

6/12= 3/6= 1/2

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Suppose that of all babies born in a particular hospital are girls. If babies born in the hospital are randomly selected, what i

mario62 [17]

Answer:

100%

Step-by-step explanation:

If all the babies born in that hospital are girls then if randomly selected they will all be girls because there are no boys even at that hospital.

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3 years ago

A block of ice has a square top and bottom and rectangular sides. At a certain point in

Lilit [14]

Answer:

$\frac{dV}{dt} = 360 \ cm^3/h$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Geometry

Volume of a Rectangular Prism: V = lwh

Calculus

Derivatives

Derivative Notation

Differentiating with respect to time

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Step-by-step explanation:

Step 1: Define

$l = 30 \ cm\\w = l\\\frac{dl}{dt} = 2 \ cm/h\\h = 20 \ cm\\\frac{dh}{dt} = 3 \ cm/h$

Step 2: Differentiate

Rewrite [VRP]: $V = l^2h$
Differentiate [Basic Power Rule]: $\frac{dV}{dt} = 2l\frac{dl}{dt} \frac{dh}{dt}$

Step 3: Solve for Rate

Substitute: $\frac{dV}{dt} = 2(30 \ cm)(2 \ cm/h)(3 \ cm/h)$
Multiply: $\frac{dV}{dt} = 360 \ cm^3/h$

Here this tells us that our volume is decreasing (ice melting) at a rate of 360 cm³ per hour.

3 0

3 years ago

Logarithms:

bogdanovich [222]

Answer:

2^45 or ≈ 3.5*10^13

Step-by-step explanation:

Given equation

f(t) = 2^(kt)
f - number of cells, t - number of months, k- coefficient

We got 32 cells in the first month. It means:

t = 1, f(1) = 32

Using these numbers we can find the coefficient k:

32 = 2^(k*1)
2^5 = 2^k
k = 5

Then the equation becomes:

f(t) = 2^(5t)

Average time is 9 months, we can calculate the number of cells:

f(9) = 2^(5*9) = 2^45 ≈ 3.5*10^13

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3 years ago

Choose the function whose graph is given by:

Inessa [10]

B. Y=2sec(2x)

This is cuz the others don’t match the graph and only this one does.

7 0

3 years ago

Multiplying Polynomial

Alex Ar [27]

(2a+2)(4a+4)
8a^2+8a+8a+8
The answer is 8a^2+16a+8

5 0

3 years ago