A. 3s<br> B. s^2<br> C. s + 1<br> D. 2s + 1

What 2 numbers add up to get -1 and multiply to get -20

Dovator [93]

The two numbers that add up to get -1 and multiply to get -20 are -5 and 4
-5*4=-20
-5+4=-1
I hope this helps

3 0

3 years ago

Taye recruits two people to be election campaign volunteers. The next week he ask each of those volunteers to recruit two more c

jeka94

Using a geometric sequence, it is found that:

a) For the first 5 weeks, the numbers are: 2, 4, 8, 16, 32

b) Hence some of the volunteers can stop recruiting new volunteers during the 7th week.

<h3>What is a geometric sequence?</h3>

A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.

The nth term of a geometric sequence is given by:

$a_n = a_1q^{n-1}$

In which $a_1$ is the first term.

For this problem, on the first week there are 2 people, and since each new people involve two more, the common ratio is of 2, hence the parameters for the geometric sequence are:

$a_1 = 2, q = 2$

Hence the number of people after n weeks is:

$a_n = 2 \times 2^{n - 1}$

For the first 5 weeks, the numbers are:

$a_1 = 2 \times 2^{1 - 1} = 2$

$a_2 = 2 \times 2^{2 - 1} = 4$

$a_3 = 2 \times 2^{3 - 1} = 8$

$a_4 = 2 \times 2^{4 - 1} = 16$

$a_5 = 2 \times 2^{5 - 1} = 32$

There will be 150 volunteers when $a_n = 150$ , hence:

$2 \times 2^{n - 1} = 150$

$2^{n-1} = 75$

$\frac{2^n}{2} = 75$

$2^n = 150$

$n = 7...$

The above is because 2^7 = 128 and 2^8 = 256, and 128 < 150 < 256.

Hence some of the volunteers can stop recruiting new volunteers during the 7th week.

More can be learned about geometric sequences at brainly.com/question/11847927

#SPJ1

3 0

1 year ago

Which mathematical term cannot be defined for all cases in a system of geometry?

Fynjy0 [20]

The mathematical terms that cannot be defined for all cases in a system of geometry are the parallel lines and midpoint of a line segment. A line is an infinite series of points in a row and it does not occupy any space. They are also called one dimensional since the direction is in one dimension. A point has a location but no specific size. It can describe a location but you can never determine its actual size. Imagine the point at the end of the previous sentence. And then imagine it getting smaller and smaller until it disappears. We can only use a dot to represent the point.

3 0

3 years ago

Use the cards to create an expression that is equivalent to 10 to the fifth power.

Ne4ueva [31]

10×5 is the answer. not sure though

3 0

3 years ago

Evaluate the expression for the given value of the variable.

blsea [12.9K]

Poiuytrewqasdfghklmn

5 0

3 years ago

Read 2 more answers

A. 3s B. s^2 C. s + 1 D. 2s + 1