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Elena L [17]
3 years ago
11

Solve: 6x + 9 > 21 or 9x - 5 < 4

Mathematics
1 answer:
marissa [1.9K]3 years ago
4 0

Answer:

x>2 and x<1

Step-by-step explanation:

first one:

6x+9-9>21-9

6x>12

6x÷6>12÷6

x>2

second one:

9x-5+5<4+5

9x<9

9x÷9<9÷9

x<1

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A new car is purchased for 19000 dollars. The value of the car depreciates at 11.25% per year. What will the value of the car be
ioda

Answer: The answer is 3573.64

Step-by-step explanation:

Exponential Functions:

y=ab^x

a=starting value = 19000

r=rate = 11.25%=0.1125

Exponential Decay:

b=1-r=1-0.1125=0.8875

Write Exponential Function:

y=19000(0.8875)^x

Plug in time for x:

y=19000(0.8875)^14

y= 3573.6388855

Evaluate :

y≈3573.64

5 0
3 years ago
What is the answer to this equation? Must solve for x.<br> x+5=12x−4
natulia [17]

Answer:

x = 9/11

Step-by-step explanation:

x + 5 = 12x - 4

Subtract x from both sides

x + 5 - x = 12x - x - 4

        5   = 11x - 4

Add 4 to both sides

      5+ 4 = 11x - 4 + 4

            9 = 11x

Divide both sides by 11

         9/11 = 11x/11

          9/11 = x

x = 9/11

8 0
3 years ago
Read 2 more answers
A bag contains marbles numbered 1 through 100. Zoe draws a marble. Then, without replacing the marble, she draws a second marble
Neporo4naja [7]
If starting out, there are 100 marbles and Zoe pulls out a 5 and doesn't replace it, then there are 99 marbles left to choose from. So, there are 9 digits 1-10 (not including #5) making the proportion you have left 9/99 which simplifies to 1/11
6 0
3 years ago
How many inches are in 4 meters
Vilka [71]

Answer:

There are 157.48 inches in 4 meters.

5 0
3 years ago
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A circle's radius that has an initial radius of 0 cm is increasing at a constant rate of 7 cm per second. Write a formula to exp
Alex Ar [27]

Answer:

r = 7t

or not mathematically,

r(t) = 7t

r(t) means, r, which is a function of t.

Step-by-step explanation:

Initial size of the radius = 0 cm, at t = 0 s

Rate of increase of the radius of the circle = 7 cm/s

dr/dt = 7

dr = 7 dt

∫ dr = 7 ∫ dt

r = 7t + C (C is the constant of integration)

At t = 0, r = 0,

0 = 0 + C

C = 0

r = 7t.

r(t) = 7t

3 0
3 years ago
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