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2 years ago

Use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 8 and the 8th term is 18.

Mathematics

1 answer:

andriy [413]2 years ago

6 0

Answer:

Step-by-step explanation:

I do not know for sure

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What's does nine square equal

Alecsey [184]

To square a number means to multiply it by itself. So 9 squared would be:

9x9

Which is

81

I hope this Helps!

5 0

3 years ago

Read 2 more answers

Evaluate tan45/sin30 . In your final answer, include all calculations.

Maslowich

From the identity $\displaystyle{ \tan x= \frac{\sin x}{\cos x}$ , and from the values:

$\sin45^{\circ}=\cos45^{\circ}= \frac{ \sqrt{2}}{2}$ ,

we have: $\displaystyle{ \tan 45^{\circ}= \frac{\sin 45^{\circ}}{\cos 45^{\circ}}= \frac{ \frac{ \sqrt{2}}{2}}{\frac{ \sqrt{2}}{2}} =1$ .

We also know that $\sin30^{\circ}= \frac{1}{2}$ .

Thus, $\displaystyle{ \frac{\tan 45^{\circ}}{\sin30^{\circ}} = \frac{1}{\frac{1}{2}}=2.$

Answer: 2

8 0

3 years ago

What represents the inverse of the function f(x)=4x

Yuki888 [10]

Answer:

$\frac{x}{4}$

Step-by-step explanation:

The given function is

f(x) = 4x

As we know

f(x) = y, which implies x= $f^{-1} (y)$

Therefore,

y = 4x

x = $\frac{y}{4}$

as x= $f^{-1} (y)$

So,

$f^{-1} (y) = \frac{y}{4}$

replacing y by x in the above expression

$f^{-1} (x) = \frac{x}{4}$

So our inverse function is $\frac{x}{4}$

4 0

3 years ago

Identify the number types that describe a bar over 7

Morgarella [4.7K]

Answer:Type of Number Example

Prime Number P=2,3,5,7,11,13,17,…

Composite Number 4,6,8,9,10,12,...

Whole Numbers W=0,1,2,3,4,…

Integers Z=…,−3,−2,−1,0,1,2,3,…

Step-by-step explanation:

8 0

2 years ago

Please help!!!<br> picture below

iVinArrow [24]

Answer:

4^3x=4^(4x+4)

Step-by-step explanation:

You can eliminate the first 2 options since those don’t make sense already, and the last option changed 64 to 2^6 which is correct, but when they changed the other side. They should have multiplied 8 to both x and 1 which would have made the whole term 2^(8x+8) and not 2^(8x+1). Left with the third option, 4 to the power of 3 is 64 so the left side makes sense, 4^3x=64^x, on the right side, 4^4 equals 256, so the whole exponent should multiply by 4 so from 256^(x+1) you get 4^4(x+1) giving 4^(4x+4) making the third choice the right answer.

6 0

2 years ago