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DENIUS [597]
2 years ago
8

Help me please I dont know what to do

Mathematics
2 answers:
krek1111 [17]2 years ago
7 0

Answer:

±√60

You'll have to remove the square from the x by squaring the 60, hence the ±60 as the answer

gtnhenbr [62]2 years ago
3 0

Answer:

It's <u>option A. ± </u>√6<u>0</u>

Step-by-step explanation:

x^2  = 60

here ^2 will move to the other side and when it does it'll become a square root to 60.

so, x = √60

now, the answer in its simplified form would be 2√15 and -2√15.

The answer of this square root will be negative as well as positive, so, ±√60.

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We perform an experiment that consists of independent trials where the probability of success is p = 0.25. (a) Let X be the numb
photoshop1234 [79]

Answer:

0.0482

Step-by-step explanation:

Given the following :

Probability of success : p(success) = 0.25

Number of trials = 800

X = number of successes

Calculate P(X > 220)

The problem above can be solved using the binomial probability formula:

P(X > 220) = P(X = 221) + P(X =222)... + P(X =800)

To save computation time, we coild use the online binomial probability calculator :

P(X > 220) = 0.0482

The binomcdf function of a graphing calcukatur can also be used :

1 - binomcdf(800, 0.25, 220)

1 - (0.95177363855) = 0.04822

5 0
3 years ago
Required information NOTE: This is a multi-part . Once an answer is submitted, you will be unable to return to this part A club
algol13

Answer:

491400

Step-by-step explanation:

Given : A club has 28 members.

To Find : . How many ways are there to choose four members of the club to serve on an executive committee?

Solution:

We are supposed to choose  four members of the club out of 28.

So, we will use combination

Formula : ^nC_r=\frac{n!}{r!(n-r)!}

n = 28

r = 4

Substitute the values :

^{28}C_{4}=\frac{28!}{4!(28-4)!}

^{28}C_{4}=\frac{28 \times 27 \times 26 \times 25 \times 24!}{4!(24)!}

^{28}C_{4}=\frac{28 \times 27 \times 26 \times 25 \times 24}{4 \times 3 \times 2 \times 1}

^{28}C_{4}=491400

Hence there are 491400 ways o choose four members of the club to serve on an executive committee

8 0
3 years ago
Philip saves $8 each month. How many months will it take him to save at least $60?
mars1129 [50]
7.5 months for him to save up to 60 ;)
8 0
3 years ago
Read 2 more answers
A marina is in the shape of a coordinate grid. Boat A is docked at (3.1, −1) and Boat B is docked at (−4.1, −1). The boats are _
kirill115 [55]

Answer:

d = 7.2

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra II</u>

  • Distance Formula: d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Step-by-step explanation:

<u>Step 1: Define</u>

Boat A(3.1, -1)

Boat B(-4.1, -1)

<u>Step 2: Find distance </u><em><u>d</u></em>

Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>.

  1. Substitute [DF]:                    d = \sqrt{(-4.1-3.1)^2+(-1+1)^2}
  2. Subtract/Add:                       d = \sqrt{(-7.2)^2+(0)^2}
  3. Exponents:                           d = \sqrt{51.84}
  4. Evaluate:                              d = 7.2
8 0
3 years ago
Read 2 more answers
How many students chose walking as their preferred method of transportation
vova2212 [387]
Is there a picture for viewing 
4 0
3 years ago
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