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4 years ago

Identify a1 and r for the sum of the geometric series. −4, 8, −16, 32,…

Mathematics

2 answers:

ikadub [295]4 years ago

6 0

Answer:

a1= -4 r=-2 on edu

Elodia [21]4 years ago

5 0

Answer: an = -4(-2)^n-1

Step-by-step explanation:

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This week Andres will practice with his band for 1 1\2 hours monday , 1 3\4 hours on tuesday , and 2 hours wednesday . Next week

alexdok [17]

Answer:

10.5 hours

Step-by-step explanation:

Given:

This week Andres will practice with his band for

$1\frac{1}{2} \ means\ \frac{3}{2} \ hours$ on Monday

$1\frac{3}{4} \ means\ \frac{7}{4} \ hours$ on Tuesday

2 hours Wednesday.

Next week Andres will practice with his band for the same number of hours on Monday, Tuesday, Wednesday.

Question asked:

What was the total number of hours Andres will practice with his band over these 6 days?

Solution:

As she practice for two weeks, three days of each week:

On two Monday, she will practice = $\frac{3}{2} + \frac{3}{2} =\frac{3+3}{2} =\frac{6}{2} =3\ hours$

On two Tuesday, she will practice = $\frac{7}{4} +\frac{7}{4}=\frac{7+7}{4} =\frac{14}{4} =\frac{7}{2} \ hours$

On two Wednesday, she will practice = $2+2=4 \ hours$

Total hours, she will practice over 6 days $=3+\frac{7}{2} +4$

$=7+\frac{7}{2} \\ \\ =\frac{2\times7+7}{2} \\ \\ =\frac{21}{2} \\ \\ =10.5\ hours$

Thus, Andres will practice 10.5 hours with his band over these 6 days.

5 0

3 years ago

Please help me thank u!

cricket20 [7]

Answer:

Step-by-step explanation: x is our missing length

c^2=a^2+b^2

where c is the hypotenuse

28^2=24^2+x

x^2=28^2-24^2=784-576=208

x= $\sqrt{208}$ =14.4

6 0

3 years ago

Add the two expressions. 2n−3 and −7n+2

Reil [10]

The answer would be -5n-1. If -7n adds to 2n you would get -5n, and if you add -3 with 2 you would get -1.

3 0

3 years ago

One number is 10 less than twice another. If their difference is 31, what is the larger number?

miv72 [106K]

Answer is in this image which is 72.

3 0

3 years ago

What is the difference? -6-[11) -17 5 5 17

Eduardwww [97]

Answer:

-17

Step-by-step explanation:

You have to simplify the expression!

5 0

3 years ago