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bixtya [17]
4 years ago
5

Please help with me with #6

Mathematics
1 answer:
emmainna [20.7K]4 years ago
3 0
So you reversed the subtraction a bit; the equation you're gonna be solving is 3x^2+8x-7-(5x^2+2x-11) .

First step ya gonna do is to reverse the + and - symbols in the trinomial thats in the parentheses so your equation looks like 3x^2+8x-7-5x^2-2x+11

Now just combine like terms and your answer should be -2x^2+6x+4
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Bobby earns $5 for every car he washes. Which graph shows the amount Bobby will earn if he washes c cars? A.Graph titled Money B
vichka [17]

Answer:

c

Step-by-step explanation:

since it is at one unit to the right of 5 on the X-axis and a series of points are at 0,0 1,5 2,10, 3,15 4,20 5,25 6,30 7,35 8,40 9,45

7 0
4 years ago
Which is the solution set for 2n-7<25
suter [353]
2n < 25 + 7
2n < 32
n < 32/2


Answer: Since thirty-two divided by two equals sixteen we add that with n and we get our answer which is n < 16
8 0
3 years ago
A positive integer + a negative integer, when the negative integer is farther from 0
Free_Kalibri [48]

Answer:

No

Step-by-step explanation:

5 0
3 years ago
Solve each exponential equation by using properties of common logarithms. When necessary, round answers to the nearest hundredth
lisabon 2012 [21]

Answer:

0.08

Step-by-step explanation:

Please use parentheses to indicate which operations must be done first.  I 'm choosing to believe that you meant 7^(3x-1) and 5^(x-1).

Taking the common log of both sides, we get:

(3x-1)log 7 = (x-1)log 5

Then 3x·log 7 - log 7 = x log 5 - log 5

Grouping the x terms:

x(3·log 7 - log 5) = log 7 - log 5.  We combine log 7 and log 5, obtaining log (7/5).

Then x(3·log 7 - log 5) = log (7/5).

Solving for x:

      log (7/5)

x = ---------------------

      3·log 7 - log 5

        0.1461

x   = ------------- = 0.08

         1.0363

This agrees with the 3rd answer choice.

7 0
3 years ago
Solve this proportion.<br> 8/x=2/5<br> x=
AleksAgata [21]
8/x = 2/5
cross multiply
(2)(x) = (8)(5)
2x = 40
x = 40/2
x = 20

now check out ur fractions : 8/20 = 2/5....notice that they are equivalent fractions...just like proportions...nothing but equivalent fractions
5 0
3 years ago
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