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DaniilM [7]
3 years ago
15

3b divided by 7 takeaway 1 = 5 What is the b?

Mathematics
2 answers:
myrzilka [38]3 years ago
8 0

Answer:

14

Step-by-step explanation:

3b/7 - 1 = 5

move the 1 over by adding

3b/7 = 6

multiply each side by 7 to get rid of the denominator

3b = 42

divide by 3

b = 14

NARA [144]3 years ago
5 0

Answer:

b=14

Step-by-step explanation:

<u><em>Step 1 : Creating the equation:</em></u>

\frac{3b}{7} -1=5  

<u><em>Step 2 : Solve by adding 1 on both sides</em></u>

\frac{3b}{7}=6

<u><em>Step 3 : Mutiply both sides by 7 to get rid of the denominator</em></u>

3b=42

<u><em>Step 4 : Divide both sides by 3:</em></u>

b=14

<u><em>Step 5 : Answer:</em></u>

The value of b is 14.

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Which angles are coterminal with 7pi/8?<br><br> Select each correct answer
Oksana_A [137]

Answer:

Step-by-step explanation:

-9pi/8

23pi/8

-25pi/8

I think its.

6 0
2 years ago
Determine the astm grain size number if 33 grains per square inch are measured at a magnification of 270×
strojnjashka [21]
8.9

The equation for the grain size is expressed as the equality:
Nm(M/100)^2 = 2^(n-1)
where
Nm = number of grains per square inch at magnification M.
M = Magnification
n = ASTM grain size number

Let's solve for n, then substitute the known values and calculate.
Nm(M/100)^2 = 2^(n-1)

log(Nm(M/100)^2) = log(2^(n-1))
log(Nm) + 2*log(M/100) = (n-1) * log(2)
(log(Nm) + 2*log(M/100))/log(2) = n-1
(log(Nm) + 2*log(M/100))/log(2) + 1 = n

(log(33) + 2*log(270/100))/log(2) + 1 = n
(1.51851394 + 2*0.431363764)/0.301029996 + 1 = n
(1.51851394 + 0.862727528)/0.301029996 + 1 = n
2.381241468/0.301029996 + 1 = n
7.910312934 + 1 = n
8.910312934 = n

So the ASTM grain size number is 8.9

If you want to calculate the number of grains per square inch, you'd use the
same formula with M equal to 1. So:
Nm(M/100)^2 = 2^(n-1)
Nm(1/100)^2 = 2^(8.9-1)
Nm(1/10000) = 2^7.9
Nm(1/10000) = 238.8564458
Nm = 2388564.458

Or about 2,400,000 grains per square inch.
7 0
3 years ago
The nth term of the sequence is n^2 + 20 <br> How many terms in the sequence are less than 50
Alex Ar [27]

Answer:

5 terms

Step-by-step explanation:

nth term of the sequence =n^2 + 20

an= n^2 + 20

1st term when n= 1

1^2 + 20= 20

2nd term n= 2

2^2 + 20=24

3rd term when n= 3

3^2 + 20= 29

4th term when n= 4

4^2 + 20= 36

5th term when n= 5

5^2 + 20 =45

6th term when n= 6

6^2 + 20=56

Hence, terms in the sequence are less than 50 are first 5 terms

6 0
3 years ago
Perform the indicated operation. <br> (-10)-(-4) <br> 6 <br> -6 <br> 14 <br> -14
34kurt
-6 you subtract and keep the sign of the greater number



6 0
3 years ago
What is ninety nine percent of two hundred?
Yuri [45]
200 x 0.99. Or you can do 200/100 which is 2. then multiply that by 99 which gets you 99 which is 198.
4 0
3 years ago
Read 2 more answers
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