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3 years ago

I need help with this question I'm stuck please help !

Mathematics

1 answer:

sertanlavr [38]3 years ago

7 0

Evaluate the series by expanding the summation, then adding all of the values. 154 would be the answer.

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Please help I Think I'm wrong!!!!

Allisa [31]

2n+2(n-4)=56
2n+2n-8=56
4n-8=56
4n=64
n=16

1st side is 16
2nd side is 12

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3 years ago

10 PTS AND MARK BRAINLEST!!!! PLZZZZ HELLLPPP!!!!

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Ok so the first one is 225 miles but i can't do the graph
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2 years ago

Which expression is even for all integers a and b?

Irina18 [472]

Do u have a problem that went with this?

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3 years ago

Read 2 more answers

Enny White is shopping for CDs. She decides to purchase 3 movie soundtracks. The music store has 7 different movie soundtracks i

zubka84 [21]

Answer:

$35\ ways$

Step-by-step explanation:

we know that

Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

To calculate combinations, we will use the formula

$C(n,r)=\frac{n!}{r!(n-r)!}$

where

n represents the total number of items

r represents the number of items being chosen at a time.

In this problem

$n=7\\r=3$

substitute

$C(7,3)=\frac{7!}{3!(7-3)!}\\\\C(7,3)=\frac{7!}{3!(4)!}$

simplify

$C(7,3)=\frac{(7)(6)(5)4!}{3!(4)!}$

$C(7,3)=\frac{(7)(6)(5)}{3!}$

$C(7,3)=\frac{(7)(6)(5)}{(3)(2)(1)}$

$C(7,3)=35\ ways$

6 0

3 years ago

Given the diagram above ...

iogann1982 [59]

Answer:

1) Angles 1 and 4, 2 and 3, 5 and 8, 6 and 7.

2) angles 3 and 6, 4 and 5.

3) angles 1 and 5, 2 and 6, 3 and 7, 4 and 8.

Step-by-step explanation:

5 0

2 years ago