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3 years ago

A number is chosen at random from 1 to 10 find the probability of selecting a multiple of 3

Mathematics

2 answers:

Andrew [12]3 years ago

4 0

a multiple of 3,3 6 and 9. since there are 10 options, you have a 3 in 10 of a chance of getting a multiple of 3

Alexxandr [17]3 years ago

3 0

The probability is 3/10. Reason being is that between 1 and 10, there are three numbers that are a multiple of 3. 3 6 and 9. since there are 10 options, you have a 3 in 10 chance of getting a multiple of 3

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Write a cubic function whose graph goes through the points: (-5, 0) (1, 0) (2, -2) (4, 0)

Free_Kalibri [48]

Answer:

f(x) = $\frac{1}{7}(x+5)(x-1)(x-4)$

Step-by-step explanation:

Let the equation of the give cubic function is,

f(x) = p(x - a)(x - b)(x - c)

Here, a, b, c and d are the x-intercepts of the given graph.

Since, x-intercepts given in the graph are x = -5, 1 and 4,

Equation of the curve will be,

f(x) = p(x + 5)(x - 1)(x - 4)

Since, the graph of this function passes through (2, -2) also

-2 = p(2 + 5)(2 - 1)(2 - 4)

-2 = -p(14)

p = $\frac{2}{14}$

p = $\frac{1}{7}$

Therefore, equation will be,

f(x) = $\frac{1}{7}(x+5)(x-1)(x-4)$

5 0

3 years ago

What is the second step to solve this x/2-5=1

sveta [45]

Answer:

X = -3

Step-by-step explanation:

X/2-5 = 1

X/-3 = 1

Multiply both sides by -3 to isolate x

X = -3

5 0

2 years ago

If 3 3/4 lb of candy costs 20 .25 how many would 1 lb of candy cost

Mrac [35]

solution:

$\frac{c}{w}=\frac{20.25}{\frac{3}{4}}\\\frac{c}{1}=\frac{20.25\times 4}{3}\\\frac{c}{1}=\frac{81}{3}\\c=27\\1Ib cost is \$ 27$

3 0

3 years ago

The ratio of two numbers is 5/4 and the first number is 7 more

vlada-n [284]

In this case, the numbers would be 5*7 and 4*7 which is 35 and 28 respectively

4 0

3 years ago

Read 2 more answers

How am I supposed to do that??

marissa [1.9K]

Answer:

not a solution

Step-by-step explanation:

y = -3/4 x +3

Is (3,2) a solution?

Substitute the point into the equation and see if it is true

2 = -3/4(3) +3

2 = -9/4 +3

2 = -9/4 +16/4

2 = 7/4

False

5 0

3 years ago