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Fofino [41]
3 years ago
12

True or false 4x^2+ 7x ^2 + x ^2 = 11x 2

Mathematics
2 answers:
marissa [1.9K]3 years ago
8 0

Answer:

false

Step-by-step explanation:

klio [65]3 years ago
7 0
False

4x^2+7x^2+x^2=12x^2 not 11x2
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A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n indepe
Mila [183]
<h3>Answer:  0.1319</h3>

==========================================

Work Shown:

P(x) = (_n C_x)*(p)^x*(1-p)^{n-x}\\\\P(14) = (_{15} C_{14})*(0.8)^{14}*(1-0.8)^{15-14}\\\\P(14) = 15*(0.8)^{14}*(0.2)^{1}\\\\P(14) \approx 0.13194139533312 \\\\P(14) \approx \boldsymbol{0.1319} \\\\

Side note: you can use the nCr formula to compute _{15} C_{14}; however, it's much quicker to use the shortcut formula _{n} C_{n-1} = n. You can also use Pascal's Triangle to find the value of _{15} C_{14}

3 0
3 years ago
When a number is decreased by 10% of​ itself, the result is 81, what is the number?
stira [4]

The number is 90.

<h3>What is the number?</h3>

Percentage can be described as the fraction of an amount that is expressed as a number out of hundred. The sign used to represent percentage is %. Percentages are a measure of frequency.

When the number is decreased, the number becomes smaller. This means that the original number is larger than 81.

The equation that can be used to represent the information in the question is:

(1 - percentage decrease) initial number = 81

(1 - 0.1)x = 81

0.9x = 81

x = 81 / 0.9

x = 90

To learn more about percentages, please check: brainly.com/question/25764815

#SPJ1

3 0
1 year ago
Help me please ......,,,,
xz_007 [3.2K]

Answer:

Step-by-step explanation: for #1 its 6

for #2 it 12

#3 is 818

#4 is 423

#5 is 87

#6 is 500  

hope this helped!

3 0
3 years ago
Read 2 more answers
Define a function. Describe what the vertical line test is used for. Describe a real life situation that can be represented by a
Marrrta [24]
A function is a relationship with a quantity (number). For example, if you made a table, and had one side be 1 2 3 4 5 (X axis) and then the y axis (other side) be 5, 10, 15, 20, 25, the function (rule) would be y= x5. The vertical line test is used to see if a graph has a function or not, so if it creates a vertical line on a graph, it has a function.
A real life situation would be miles per hour, so, for the x axis (hours) it said 1, and for the y axis (miles) it would be 60, this means in a duration of 1 hour you went 60 miles. Well, lets say you went 2 hours driving, the miles would be 120. 
For 3 hours, it would be 180. The function here is y= x60!
If you have any questions ask me!
4 0
4 years ago
Does the function model exponential growth or decay? f(t)=1/4⋅4^t
yarga [219]

Answer:

This is an exponential decay

Because the base of the exponent is 1/4.4 which is less than 1

Step-by-step explanation:

What is exponential growth?

when the base of our exponential is bigger than 1, which means those numbers get bigger.

What is exponential decay?

when the base of our exponential is in between 1 and 0 and those numbers get smaller.

6 0
3 years ago
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