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horrorfan [7]
3 years ago
6

Somebody pls help with no. 5

Mathematics
1 answer:
Julli [10]3 years ago
8 0

Answer:

a) is -7

Step-by-step explanation:

8=2048(2)^{n-1}

\frac{8}{2048} =\frac{2048^{n-1} }{2048}

8/2048=0.00390625 = (2)^{n-1}

2^{-8} = 0.00390625

-8-1=-7

and do the rest with the same equation which is tn=ar^{n-1}

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The circumference of a circle is 60π cm. What is the radius of the circle
Sindrei [870]

Answer:

15 cm

Step-by-step explanation:

Circumference of circle= 2πr, where r us the radius of the circle.

Given that the circumference of circle is 60πcm,

60π= 2πr

Divide by 2 on both sides,

15π= πr

Divide by π on both sides,

15= r

Thus, radius of circle= 15cm.

8 0
3 years ago
A=the quantity of 4 minus all raised to the five - minus-2 power
Katena32 [7]

Answer:

step by step explanation

5 0
3 years ago
1. The Senior Class of Great Ridge High School and Ann Arbor High School are planning a trip to Six Flags Theme Park. Great Ridg
Zanzabum

Answer:

A)14v + 16b = 1152

10v + 13b = 925

B)Number of students in a van = 8

Number of students in each bus = 65

C) Elimination method was easier.

Step-by-step explanation:

Let v be the number of students in a van

Let b be number of students in a bus

A) We are told the first school can fill 14 vans and 16 buses with 1152 students

Thus;

14v + 16b = 1152 - - - - - (eq 1)

Also,we are told that the second school can fill 10 vans and 13 buses with 925 students.

Thus;

10v + 13b = 925 - - - - (eq 2)

B) To solve this we will use elimination method.

Multiply eq (1) by 5 and multiply eq (2) by 7 to give;

70v + 80b = 5760 - - - - eq(3)

70v + 91b = 6475 - - - - - eq(4)

Subtract eq(3) from eq(4) to give;

91b - 80b = 6475 - 5760

11b = 715

b = 715/11

b = 65

Put 65 for b in eq(3) to give;

70v + 80(65) = 5760

70v = 5760 - 80(65)

70v = 560

v = 560/70

v = 8

Number of students in a van = 8

Number of students in each bus = 65

C) Elimination method was used because in both equations, we had different digits attached and so it would have been more tedious to use substitution method or graphical method. Thus, elimination method was more easier.

7 0
3 years ago
The function f(x) varies inversely with x and f(x)=8 when x=3
Sedaia [141]

Answer:

12

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form y*x=k or y=k/x

In this problem we have

For x=3 -----> f(x)=8

so

Find the value of k

f(x)*x=k

substitute the value of x and f(x)

8*3=k

k=24

therefore

the equation is equal to

f(x)=24/x

For x=2 -------> substitute in the equation and find the value of f(x)

f(x)=24/2=12

6 0
3 years ago
Read 2 more answers
Which expression is equivalent to sec²x - 1? A. cot²x B. tan²x C. CsC²x D. cos²x​
Andrei [34K]

Hi

Answer:

Step-by-step explanation:

3 0
2 years ago
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