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ad-work [718]
4 years ago
13

Find the common ratio of the geometric sequence-15,-30,-60

Mathematics
1 answer:
blondinia [14]4 years ago
7 0

Answer:

2

Step-by-step explanation:

The common ratio of the sequence is 2 because between each term you are multiplying by 2 to get the next term

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Plz help me i need it
Nimfa-mama [501]

Answer:   \bold{d)\quad f^{-1}(x)=\dfrac{e^x}{5}}

<u>Step-by-step explanation:</u>

To find the inverse, swap the x's and y's and solve for y. <em>Note: f(x) is y</em>

<em>y = ln(5x)\\\\\text{Swap the x's and y's:}\\x=ln(5y)\\\\\text{Apply e to both sides:}\\e^x=e^{ln(5y)}\\\\e^{ln}\ \text{cancels out:}\\e^x=5y\\\\\text{Divide both sides by 5:}\\\dfrac{e^x}{5}=y\\\\\large \boxed{f^{-1}(x)=\dfrac{e^x}{5}}</em>

8 0
3 years ago
How to do this question plz answer me step by step plzz ​
galina1969 [7]

Answer:

No

Step-by-step explanation:

Diameter= 180cm

Circumference of each table

= πD

= 180π cm

Each table can fit

= 180π ÷70

= 8 guests (nearest whole number)

Since there are 18 tables, total number of guests

= 8(18)

= 144 guests

Since there are only enough tables to sit 144 guests, there are not enough tables to fit 145 guests.

Note that we cannot take the sum of the circumference for 18 tables than divide by 70 to see how many guests can fit because a guest can only be sitted on one table.

If that was done,

Total circumference

= 180π(18)

= 10179 cm (5 s.f.)

Total number of people

= 10179 ÷70

= 145 people (3 s.f.)

This is incorrect.

5 0
3 years ago
How do I solve 3x-y=15
Mariana [72]
Okay, 3x just means 3•x. so 3•x-y=15. you would have to have what x and y both mean to get the correct answer. but if they just need it simplified than your answer would be 3•x-y=15
4 0
3 years ago
The camera Melissa wanted for her birthday is on sale at 41​% off the usual price. The amount of the discount is ​$86.10. What w
ludmilkaskok [199]
The answer is 121.401.
6 0
3 years ago
Work out m and c for the line: y = 9 − x
Arlecino [84]

Answer:

m = -1

c = 9

Step-by-step explanation:

<em>m</em> is slope, which is the coefficient of <em>x</em>

<em>c</em> is the y-int, which is the constant

4 0
3 years ago
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