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vovikov84 [41]
3 years ago
14

Solve 7x − 2(x + 1) = 6x + 14. (5 points) −12 12 −16 16

Mathematics
1 answer:
anygoal [31]3 years ago
5 0

Answer:

C

X=-16

Step-by-step explanation:

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In 2002, the Bookstore sold 1000 paperback books and 1500 hardback books. In 2003, the store sold 15% more paperback books and 5
ratelena [41]
Given:
2002 sold 1000 paperback books and 1500 hardback books for a total of 2,500 books.

2003 sold 15% more paperback books and 5% more hardback books.
1000 x 1.15 = 1,150 paperbacks
1500 x 1.05 = 1,575 hardbacks

1150 + 1575 = 2,725

2,725 - 2,500 = 225
225 / 2,500 = 0.09
0.09 x 100% = 9%  choice C

7 0
3 years ago
The first two angles in a triangle are 90 degrees and 50 degrees. What does the third angle have to be?
s2008m [1.1K]

Answer:

B) 40 degrees

Step-by-step explanation:

90 + 50 = 140

Each triangle have 180 °

180 - 140 = 40

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3 years ago
I WILL GIVE BRAINLIEST PLEASE HELP FULLY (pt 2)
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Answer: What expression can Melanie write to figure out how much her ... Mauricio plans on retiring in 20 years, and he wants to double his money by that time. He has contacted various banks, looking for a CD that compounds interest monthly, and to calculate what annual interest rate he needs, he is using the rule of 72.

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5 0
3 years ago
What is the perimeter of a square with a side length of 5/7 units.
Gelneren [198K]
Perimeter = 4× 
Where x = 5/7
4* 5/7
p= 20/7
The answer will be a mixed fraction
p= 2 6/7 units

Hope that helps!
8 0
3 years ago
Read 2 more answers
The differential equation y′′=0 has one of the following two parameter families as its general solution: yyyy=C1ex+C2e−x=C1cos(x
svet-max [94.6K]

Answer:

y_c = 2 + 10*x

Step-by-step explanation:

Given:

                                                y'' = 0

Find:

- The solution to ODE such that y(0) = 2, y'(0) = 10

Solution:

- Assuming a solution y = Ce^(mt)

So,                                y' = C*me^(mt)

                                    y'' = C*m^2e^(mt)

- Back substitute into given ODE, we get:

                                    y'' = C*m^2e^(mt) = 0

                                    e^(mt) can not be equal to zero

- Hence,                       m^2 = 0

                                     m = 0 , 0 - (repeated roots)

- The complimentary function for repeated roots is:

                                    y_c = (C1 + C2*x)*e^(m*t)

                                    y_c = C1 + C2*x  

- Evaluate @ y(0) = 2

                                    2 = C1 + C2*0

                                    C1 = 2

-Evaluate @ y'(0) = 10

                                    y'(t) = C2 = 10

Hence,                         y_c = 2 + 10*x

5 0
3 years ago
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