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RUDIKE [14]
3 years ago
6

Do number fifteen plz do this ASAP

Mathematics
1 answer:
weeeeeb [17]3 years ago
7 0
What do you mean ???
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What is the answer to -6+5b=6b-7
ratelena [41]
Remember
ou can do anything to an equaiotn as long as you do it to both sides
try to isolate variable and get 1 of it

-6+5b=6b-7
subtract 5b from both sides
-6=b-7
add 7
1=b
8 0
3 years ago
Read 2 more answers
B/13-3b/13=8/13 help please
OLEGan [10]
\frac{b}{13} - \frac{3b}{13} = \frac{8}{13}
Since the two fractions have a common denominator already, we can just subtract the numerators.
b-3b=-2b or -3b+b=-2b
Either way you get the same answer :)
Our new fraction is \frac{-2b}{13}
Now we know that this must be equal to \frac{8}{13}
Again, since the denominators are already the same of course they are equal. 13=13
Now we have to set the numerators equal
-2b=8
Use inverse operations to get b alone
-2b=8
÷-2   ÷-2
b=-4
If you have any questions, feel free to ask. Hope this helped! :)

5 0
3 years ago
R=26 in. find the diameter.
Iteru [2.4K]

Answer:

see

Step-by-step explanation:

diameter=2×pi×r

diameter. 2.22/7.r

6 0
3 years ago
If 20% of x is 28, what is 70% of x?
Alona [7]

Answer:

98

Step-by-step explanation:

Of means multiply and is means equals

20% *x = 28

Changing to decimal form

.20 * x = 28

Divide each side by .20

.20x/.20 = 28/.20

x =140

Now we want to find 70% of 140

70% * 140

Changing to decimal form

.70 * 140

=98

7 0
3 years ago
Read 2 more answers
A cell reproduces by doubling every hour. If you start with a single cell, how many will you have in 24 hours?
kumpel [21]

Answer: 4 cells.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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