What property is 4(2x -3) from math

Select all irrational numbers. 4√ 8√ 10√ 15√ 36√

harkovskaia [24]

The irrational numbers would be:

8

10

15

8 0

3 years ago

Assume that when adults with smartphones are randomly selected, 51% use them in meetings or classes. If 11 adult smartphone us

Luba_88 [7]

Answer:

The probability is 0.2356.

Step-by-step explanation:

Let X is the event of using the smartphone in meetings or classes,

Given,

The probability of using the smartphone in meetings or classes, p = 51 % = 0.51,

So, the probability of not using smartphone in meetings or classes, q = 1 - p = 1 - 0.51 = 0.49,

Thus, the probability that fewer than 5 of them use their smartphones in meetings or classes.

P(X<5) = P(X=0) + P(X=1) + P(X=2) + P(X=3)+P(X=4)

Since, binomial distribution formula is,

$P(x) = ^nC_r p^x q^{n-x}$

Where, $^nC_r=\frac{n!}{r!(n-r)!}$

Here, n = 11,

Hence, the probability that fewer than 5 of them use their smartphones in meetings or classes

$=^{11}C_0 (0.5)^0 0.49^{11}+^{11}C_1 (0.5)^1 0.49^{10}+^{11}C_2 (0.5)^2 0.49^{9}+^{11}C_3 (0.5)^3 0.49^{8}+^{11}C_4 (0.5)^4 0.49^{7}$

$=(0.5)^0 0.49^{11}+11(0.5)0.49^{10} + 55(0.5)^2 0.49^{9}+165 (0.5)^3 0.49^{8} +330(0.5)^4 0.49^{7}$

$=0.235596671797$

$\approx 0.2356$

4 0

4 years ago

Chayanne baked some cupcakes for her friends.She baked 24 cupcakes.Each cupcake is 2/15 pound.If she packed 6 cupcakes in each b

goldfiish [28.3K]

Answer:

$4/5\ or\ 0.8\ pounds$

Step-by-step explanation:

Chayanne baked some cupcakes for her friends. She baked 24 cupcakes. Each cupcake is 2/15 pound. If she packed 6 cupcakes in each box, what is the weight of each box?

$6*2/15\\12/15\\4/5\\$

Each box weighs $4/5\ or\ 0.8\ pounds$

Hope this helps!

4 0

3 years ago

I need help... plssss :))

vivado [14]

Answer:

(1, -1), (1, -2), (2, -3), (2, -4)

NO

Step-by-step explanation:

✔️Each ordered pair is written as (input, output).

Thus, we would have the following:

(1, -1), (1, -2), (2, -3), (2, -4)

✔️This cannot be a function because every input value do not have exactly one output value related to it. A function should not have an input value related to more than one output value.

So, the answer is NO. It is not a function.

4 0

3 years ago

Find the simple interest earned to the nearest cent for each principal, interest rate, and time.

mafiozo [28]

Answer:

for the first one its I=38.40 for the 2nd one its $315

Step-by-step explanation:

Simple interest , I, is calculated by multiplying the principal, P, by the rate,r, by the time, t, in years:

I = P * r * t

Here, P = $640

r = 0.03 (decimal value for 3%)

t = 2 years

The interest will be:

I = P * r * t

I = 640 * 0.03 * 2

I = $38.40

2nd one:

We know, Interest value = P * R * T /100

Here, P = 1500

R = 4.25

T = 4

Substitute their values,

I = 1500 * 5.25 * 4 / 100

I = 31500 / 100

I = 315

In short, Your Final Answer would be $315

3rd answer:

assuming you subtract 2% of 580 a month for six months. your remaining money would be $510.40

because you subtract $69.6 from 580

4th answer:

$1231

Step-by-step explanation:

Given,

Principal amount = $1200

Rate of interest = 3.9%

Time = 8 months or (8/12) 0.666667 years

Formula of simple interest =

A = 1200(1+(0.039 × 0.666667))

A = 1200 (1+0.026)

A = 1200 (1.026)

A = $1231

Please give brainliest!!

5 0

3 years ago

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