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Anettt [7]
2 years ago
13

Show your work for -4x+3(2x-5)=31

Mathematics
1 answer:
mina [271]2 years ago
4 0

Step-by-step explanation:

- 4x + 3(2x - 5) = 31 \\  - 4x + 6x - 15 = 31 \\ 2x - 15 = 31 \\ 2x = 31 + 15 \\ 2x = 46 \\ x = 46 \div 2 \\ x = 23

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If 4 quarts of organic grapes cost $20 how many quarts can you purchase for one dollar
Eva8 [605]

Answer:

4/5 of a quart

Step-by-step explanation:

Set this up as a proportion. First of all we know that 4 quarts of organic grapes cost $20, so 4x = 20. Divide and you get that x = 5 meaning 1 quart equals 5 dollars. Now if we scale this down a bit and divide by 5, we end up with 4/5 of a quart = 1$.

Hope this helped (:

3 0
3 years ago
Factor x^2+6x-16 into the form (x+a)(x-b), what is a and b?
vfiekz [6]

Answer:

a=-8 b=2

Step-by-step explanation:

x^2+6x-16

x^2+(8-2)x-16=0

x^2+8x-2x-16=0

X(X+8)-2(X+8)=0

(X+8)(x-2)=0

Compare with (X+a)(X+b)

Where we get a=-8 b=2

8 0
3 years ago
7. Liang is ordering new chairs and cushions for his dining room table.
Furkat [3]

Answer: 100c +34

Step-by-step explanation: I believe you add 88c and 12c together which simplifies the expression to 100c + 34 in total cost.  

7 0
3 years ago
HELP PLEASE !!!!!!!!!!!
horrorfan [7]

Answer:

option B

Step-by-step explanation:

\lim_{x\to \infty} f(x) =  \lim_{x \to \infty} (log(x+2)-3 )

                    =  \lim_{x \to \infty} ( log(x+2)) - \lim_{x \to \infty} 3\\\\=\infty - 3\\\\= \infty

\lim_{x \to 2} f(x) =  \lim_{x \to 2} ( log(x+2)) - \lim_{x \to2} 3\\\\

                 = log( 2 + 2 ) - 3\\\\= log 4 - 3\\\\=log(2^2) -3\\\\=2 log 2 -3

\lim_{x \to -2} f(x) =  \lim_{x \to -2} ( log(x+2)) - \lim_{x \to -2} 3\\\\  \lim_{x \to -2}_+ f(x) = \lim_{x \to -2_+} ( log(x+2)) - \lim_{x \to -2_+} 3 = -\infty\\\\\lim_{x \to -2_-} f(x) =  \lim_{x \to -2}_- ( log(x+2)) - \lim_{x \to -2}_- 3 = -\infty\\\\\\\lim_{x \to -2} f(x) =  - \infty

6 0
3 years ago
the cost in dollars of a field trip is 64+14n, where n is the number of people attending. what is the cost for 48 people
Dennis_Churaev [7]

64 + 14x48 =

64 + 672 = 736 dollars

3 0
3 years ago
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