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3 years ago

Three coins are tossed. What is the possibility of tossing exactly one tail

Mathematics

1 answer:

lesya [120]3 years ago

6 0

Answer:

Probability of getting at least 1 tail in 3 coin toss is 1−18=78

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If f(x) = 2x + 3 for all values of x, what is the value of f(-3)?

IrinaK [193]

Answer:

f(-3)= -3

Step-by-step explanation:

We are given the function:

f(x) = 2x+3

and asked to find f(-3). Essentially, we want to find f(x) when x is equal to -3.

Therefore, we can substitute -3 for each x in the function.

f(x)= 2x+3 at x= -3

f(-3)= 2(-3) +3

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition and Subtraction

Multiply 2 and -3.

f(-3) = (2*-3) +3

f(-3)= (-6)+3

Add -6 and 3.

f(-3)= (-6+3)

f(-3)= -3

If f(x)= 2x+3, then<em> f(-3)= -3</em>

7 0

3 years ago

Rút gọn biểu thức <br> x^2-3/x+√3

zzz [600]

Answer:

i dont understand

Step-by-step explanation:

7 0

3 years ago

Jenny studied the characteristics of two species of bacteria. The number of bacteria of species A, A(t), after t hours is repres

fredd [130]

Answer: D . $N(t) = 3 + (0.25t)^3 - 8(1.06)^t$

Step-by-step explanation:

Given : Jenny studied the characteristics of two species of bacteria. The number of bacteria of species A, A(t), after t hours is represented by the function,

$A(t) = 5 + (0.25t)^3$

The number of bacteria of species B, B(t), after t hours is represented by the function, $B(t) = 2 + 8(1.06)^t$

Then, the difference in the number of bacteria, N(t), of both the species after t hours will be :-

$N(t)=A(t)-B(t)\\\\=5 + (0.25t)^3-(2 + 8(1.06)^t)\\\\=5 + (0.25t)^3-2-8(1.06)^t\\\\=5-2 +(0.25t)^3-8(1.06)^t\\\\=3+(0.25t)^3-8(1.06)^t$

Hence, the correct answer should be : D . $N(t) = 3 + (0.25t)^3 - 8(1.06)^t$

7 0

3 years ago

The formula F=9/5C+32 is used to convert Celsius to Fahrenheit temperature. If the temperature is 20 C what is it in Fahrenheit?

ahrayia [7]

F = C x 9/5 + 32
(20) x 9/5 + 32
= 68

5 0

3 years ago

What is 45% written as a fraction

Neko [114]

There are 2 ways you can write this.

You can either do /1 or /100

$\frac{45}{1} or \frac{45}{100}$

The most used is $\frac{45}{100}$

7 0

3 years ago