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Marta_Voda [28]
3 years ago
10

WILL GIVE BRAINLIEST!!! Thank youu!!

Mathematics
2 answers:
Ivan3 years ago
6 0

Answer:

7b+4

Step-by-step explanation:

slega [8]3 years ago
4 0

Combine like terms.

2 {b}^{2}  - 2 {b}^{2}  = 0

3b - ( - 4b) = 7b

- 5 - ( - 9) = 4

So, the answer is

7b + 4

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Free_Kalibri [48]
By doing this

305.00 - 37.25 = 267.75
7 0
3 years ago
Which is a better a polar bear or an LED light bulb
Sladkaya [172]
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3 years ago
Question 4 (5 points)
Inessa05 [86]

Answer:

Option C

Step-by-step explanation:

Given

Mean= μ=60

and

Standard Deviation= σ=5

In order to calculate the percentage of students between 55 and 65, we have to calculate z-score for both

z-score for 55=(55-60)/5  

=(-5)/5

=-1

The area to the left of z-score -1 is 0.1587

z-score for 65=(65-60)/5  

=5/5

=1

The area to the left of z-score 1 is 0.8413

Area between z-scores of 55 and 65=0.8413-0.1587

=0.6826

Converting into percentage

=0.6826*100

=68.26%

Option C is the correct answer ..  

4 0
3 years ago
Read 2 more answers
Why does a difference exist between the mean and the median
vazorg [7]
The mean is like the average and median is the middle numbers
8 0
3 years ago
Read 2 more answers
Find the 93rd term of the arithmetic sequence -5,-15,-25
adoni [48]

Arithmetic Sequence

The value of the 93th term of this arithmetic series is -925

Step-by-step explanation:

The first term of the arithmetic term is a = -5                                                                                

And the common difference is d = a2-a1 = -15 - ( - 5) = -10

So the 93th term if this arithmetic progression is given by

    an = a + (n-1) × d  

where an is the nth term of the arithmetic progression

so in order to calculate the 93rd term (a93), the value of n = 93

so a93 = -5 + (93-1) × (-10)

a93 = -5 + (-920 )

a93 = -925

Hence the value of the 93th term of this arithmetic series is -925  

8 0
3 years ago
Read 2 more answers
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