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9966 [12]
3 years ago
6

Square root of 25x plus 4 square root of x

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0
\sqrt{25x} +4 \sqrt{x} = \sqrt{5^2*x} +4 \sqrt{x} = 5\sqrt{x} +4 \sqrt{x} = 9\sqrt{x}
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Can someone take 3 min for there time and help me with this please??
seropon [69]
Since the left side of the equation says f(5), then plug in 5 for x. 

So, it is: 
              
-4|5| + 3
= -20 + 3
= 23 
4 0
3 years ago
Find how X and y compare when log X = 6.6 and log y = 3.6
asambeis [7]

Answer

x = 3981071.7055

y  = 3981.0717

x > y

Step by step explanation

First let's find the value of x and y by taking anti - log.

log X = 6.6

X = log^ -1 (6.6)

X = 3981071.7055

Similarly,

log Y = 3.6

Y = log ^(-1) 3.6

Y = 3981.0717


Once we found the values of X and Y , we can easily compare them.

Here x > y

Hope you will understand the concept.

Thank you. :)

8 0
3 years ago
Adult entrance fees to amusement parks in the United States are normally distributed with a population standard deviation of 2.5
kondor19780726 [428]

Answer:  1.509

Step-by-step explanation:

The formula of Margin of Error for (n<30):-

E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 22

Level of confidence = 0.99

Significance level : \alpha=1-0.99=0.01

Using the t-distribution table ,

Critical value : t_{n-1, \alpha/2}=t_{21,0.005}= 2.831

Standard deviation: \sigma=\text{ 2.5 dollars }

Then, we have

E=( 2.831)\dfrac{2.5}{\sqrt{22}}\approx1.509

Hence, the margin of error for a 99% confidence interval for the population mean =1.509

4 0
3 years ago
(4y 2 – 5y) + (3y – 7y 2) – (2y 2 + 6y – 5)<br> Simplify.
Elan Coil [88]
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<span> 5.1 </span>    Pull out like factors :

  <span> -5y2 - 8y + 5</span>  =  <span> -1 • (5y2 + 8y - 5)</span> 



I hope tht help

4 0
3 years ago
Please help thanks very much
olchik [2.2K]
A)
sinA = 8√3 / 16 = √3 / 2

answer is B
√3 / 2

B) It's 30 60 90 right triangle 
so <B is 30

answer is A
m<B = 30
6 0
3 years ago
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