 admin # Calculate: √5/2-√5+2/2+√5

2 months ago

## Solution 1 Guest #7157
2 months ago
-√5/2+√5+1
-√5/2+2√5/2+1
√5/2+1
(√5+2)/2

## Solution 2 Guest #7158
2 months ago
So,  First, we have to simplify the expression.

We can see that there is a negative square root of 5 and a positive square root of 5.  They cancel out.  In addition, we know that two-halves are equal to 1.  Since the square root of 5 can be thought of as 5 to the one-half power, we should evaluate that first. Substitute 2.236 for the square root of 5. Multiply.
1.118 + 1

2.118

So the expression is approximately equal to 2.118 (exactly 2.1180339887498948482045868343656).

## 📚 Related Questions

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What are the domain, range, and asymptote h(x) = (0.5)x -9
Solution 1
1. You have the following function given in the problem:

h(x) = (0.5)x -9

2. As you can see, the function has the form f(x)=mx+b, therefore, the function h(x) = (0.5)x -9 is known as "linear function".

3. When you graph it, you obtain a line.

-The domain of the function is:

R( All the real numbers)

-The range of the function is:

R (All the real numbers)

- h(x) = (0.5)x -9 is asymptotic to
h(x) = (0.5)x -9
Question
A map is drawn using a scale of 80 mi to 1 cm. On the map , the two cities are 7.5 cm apart. What is the actual distance between the two cities ??
Solution 1
We know that
scale =measure in the map/measure in the actual
measure in the actual=measure in the map/scale
scale=1 cm/ 80 mi
for
measure in the map=7.5 cm
measure in the actual=?
measure in the actual=7.5 /(1/80)-----> 7.5*80-----> 600 mi

the actual distance between the two cities is 600 miles
Question
Find the sum of the summation of 2 i minus 12, from i equals 7 to 16. 22 110 220 440
Solution 1
Sum: S
S=[2(7)-12]+[2(8)-12]+[2(9)-12]+[2(10)-12]+[2(11)-12]+[2(12)-12]+[2(13)-12]+[2(14)-12]+[2(15)-12]+[2(16)-12]

S=2(7+8+9+10+11+12+13+14+15+16)-10(12)
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Solution 2

Step-by-step explanation:

Since we have given that Hence, the value of summation is 110.

Therefore, Second option is correct.

Question
For this problem how do i get n? 6n-12=n+3
Solution 1
You just need to use algebra to isolate/find n

6n-12=n+3
+12    +12
6n=n+15
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5n=15
---   ---
5     5
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Check:
6(3)-12=3+3
18-12=6
6=6
Solution 2
Well, you got to try different numers to get n. So, just play around wit different numbers and see which one fits correctly
6 times what -12 is equal to 3 + that number?!
It has to be the same number

Question
Which function represents a reflection of f(x) = 2(0.35)x over the y-axis?
Solution 1 Step-by-step explanation:

Given is an exponential function with base as 0.35

The function is When this should be reflected over y axis, the y axis will serve as a mirror for the given curve and new curve

y axis has equation as x=0

Hence reflection would be changing sign of x Solution 2
Hello there,
The answer it's  h(x)=2(.35)-x aka c for e2020

I hope this helped, and if you have any more question please feel free to ask me.
Have a nice day!
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A ball is thrown into the air with an upward velocity of 32 ft/s. Its height h in feet after t seconds is given by the function h = −16t2 + 32t + 6. In how many seconds does the ball reach its maximum height? Round to the nearest hundredth if necessary. What is the ball’s maximum height?
Solution 1
It will reach the maximum in 1 second; the maximum height is 22 feet.

We find the maximum by finding the vertex.  We first find the axis of symmetry, whose equation is
x = -b/2a
x = -32/2(-16)
x = -32/-32 = 1

This gives us that it reaches the maximum in 1 second.

To find the y-coordinate, the maximum height, we substitute this into the equation:
h(1) = -16(1²)+32(1)+6
h(1) = -16+32+6 = 22

It reaches a height of 22 feet.
Question
Factor the trinomial below. x2 – 14x + 45 A. (x – 3)(x + 15) B. (x – 5)(x + 9) C. (x – 5)(x – 9) D. (x – 3)(x – 15)
Solution 1
Hi there! To find our answer we are looking for 2 integers. The sum of the integers must be -14 (since it must be equal to the number before the variable x). The product of both integers must be 45. Now we can conclude we are looking for the numbers -9 and -5. (Remember that multiplying 2 negatives makes you end up with a positive.)

~ Hope this helps you!
Solution 2
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Use double angle to rewrite 12sinxcosx
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Sin2x = 2 sinx cosx
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6 times the sum of a number and 2 is 8 less than twice the number
Solution 1
That can be written as:-

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Question
3(−4x) + 3(5) = 12 −12x + 15 = 12 −12x + 15 − 15 = 12 − 15 −12x = −3 x =
Solution 1

don't forget to rate and thank plz.

Solution 2
X = -3 / -12 = 1/4 Answer

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