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ehidna [41]
3 years ago
5

How many solutions -3x+9-2x=-12-5X

Mathematics
1 answer:
vesna_86 [32]3 years ago
5 0

Answer:

0

Step-by-step explanation:

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The value of an antique car is modeled by the function v(x)=107,000(1.009)^(2/3x) where x is the number of years since 2005. by
baherus [9]

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3 years ago
At a bake sale, as student spent $11.00 buying 3 brownies and 5 cookies. His friend spent $3.95 buying 1 brownie and 2 cookies.
riadik2000 [5.3K]

Answer:

$$2.25

Step-by-step explanation:

Let b = the cost of one brownie, c = cost of one cookie

3b + 5c = 11

b+2c = 3.95

Times 3 on both sides on the second equation above to get the following:

3b + 6c = 11.85

3b+6c - (3b+5c) = 11.85-11

3b+6c-3b-5c = 0.85

c = 0.85

To find the value of b, use substitution:

b+2c = 3.95

b = 3.95-2c

= 3.95 - 2\times0.85

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\therefore the cost of a brownie is $$2.25

Hope this helps :)

4 0
3 years ago
6 + 2/5b = 12<br><br> What does “b” equal?
Elis [28]

Answer:

B = 15

Step-by-step explanation:

<u>Combine multiplied terms into a single fraction</u>

6 + 2b/5 = 12

<u>Subtract 6 from both sides</u>

6 + 2b/5 <em>(-6)</em> = 12 <em>(-6)   </em>= 2b/5 = 6

<u>Multiply all terms by the same value to eliminate fraction denominators</u>

2b/5 <em>( x 5) </em>= 6<em> (x 5)</em>

<em />

<u>Simplify</u>

2b = 30

4 0
3 years ago
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3 years ago
Rewrite the following equation in slope-intercept form.<br> 16x + 10y = 15 <br> plz help
Natalka [10]

Answer:

im not sure im really sorry

Step-by-step explanation:

im answering this because i have the same question

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3 years ago
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