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3 years ago

Someone help plz I need some help help... plz... I? Help

Mathematics

2 answers:

taurus [48]3 years ago

7 0

Answer:

Step-by-step explanation:

h(n)=3n

h(4)

1. Subsitute 4 for n

h(4)=3*4

h(4)=12

timofeeve [1]3 years ago

7 0

Answer:

Step-by-step explanation:

h(4)=3n

h(4)=3(4)

h(4)=12

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If x= 7 - 4√3 then find the value of (a) (x+1/x) rais to 2 b) x rais 2+1/x rais to 2

ololo11 [35]

The equation x = 7 - 4√3 is a radical expression, and the value of the radical expression is $(x + \frac 1x)^2 = 3650401 -2107560\sqrt 3$

<h3>How to solve the expressions?</h3>

The equation is given as:

x = 7 - 4√3

So, we have:

$(x + \frac 1x)^2 = (7 - 4\sqrt 3 + \frac{1}{7 - 4\sqrt 3})^2$

Take the LCM

$(x + \frac 1x)^2 = (\frac{49 -56\sqrt3 + 48}{7 - 4\sqrt 3})^2$

Evaluate the like terms

$(x + \frac 1x)^2 = (\frac{97 -56\sqrt3 }{7 - 4\sqrt 3})^2$

Rationalize

$(x + \frac 1x)^2 = (\frac{(97 -56\sqrt3)(7 - 4\sqrt 3) }{49 -48})^2$

Evaluate the difference

$(x + \frac 1x)^2 = ((97 -56\sqrt3)(7 - 4\sqrt 3))^2$

Expand

$(x + \frac 1x)^2 = (679 -388\sqrt 3 -392\sqrt 3 + 672)^2$

Evaluate the like terms

$(x + \frac 1x)^2 = (1351 -780\sqrt 3 )^2$

Expand

$(x + \frac 1x)^2 = 1825201 +1825200 -2107560\sqrt 3$

$(x + \frac 1x)^2 = 3650401 -2107560\sqrt 3$

Hence, the value of the radical expression is $(x + \frac 1x)^2 = 3650401 -2107560\sqrt 3$

Read more about radical expressions at:

brainly.com/question/8952483

#SPJ1

4 0

2 years ago

BRAINLIEST ********

timama [110]

Answer:

$ 1249.6

Step-by-step explanation:

given,

cost of saddle = $534.00

riding chaps cost = $87.02

boots cost = $143.99

hat cost = $55.87

pairs of glove cost = $15.94

sales tax paid = 7.5%

Sam's lesson cost = $35.00 per lesson

number of lesson = 10

Total purchase cost

= $534.00 + $87.02 + $143.99 + $55.87 + $15.94

= $ 836.82

cost included sales tax

= 1.075 x $ 836.82

= $ 899.58

Cost of lesson = 10 x $35.00 = $350.0

Total cost of the Sam

= $ 899.58 + $350.0

= $ 1249.58

= $ 1249.6

7 0

4 years ago

Order: Amphotericin B 75 mg in 1,000 mL D5W to infuse over 6 hr daily. The IV is to infuse in 6 hr. The administration set deliv

malfutka [58]

Answer:

The IV should infuse at the rate of 28gtt/min

Step-by-step explanation:

The concept applied here is the application of the glucose tolerance test abbreviated as gtt.

The gtt is used in the diagnosis of type 2 diabetes. basically, the test is administered by drinking a solution of glucose, the blood is measured at intervals at which the glucose is extracted from the body.

A step by step calculation is as shown in the attachment

8 0

4 years ago

Pedro bought 8 tickets to a basketball game. He paid a total of $208. Write an equation to determine whether each ticket cost $2

Kryger [21]

Here is the equation:

8x= 208

Divide both sides by 8.

x= 26

Each ticket costs 26 dollars.

I hope this helps!
~kaikers

3 0

3 years ago

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Does anyone know this question

ivanzaharov [21]

the answer is B because it is 90° to the left (i guessed, srry for takin ya points dawg)

5 0

4 years ago

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