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galina1969 [7]
3 years ago
5

Lauren paid a one - time membership fee of $70.25 when joining a gym, and since then she has been paying $36.45 per month. So fa

r she has paid $653.45. For how many months has Lauren been a member of the gym? Plz show work and explain.
A. 15
B. 16
C. 18
D. 21
Mathematics
1 answer:
Natalka [10]3 years ago
4 0

Answer: 16 months.

Step-by-step explanation: We can subtract 70.25 from the total amount of payment since that was a one-time payment. So:

653.45 - 70.25 = 583.20

From there, we have to divide that by the monthly payment. So:

583.20 / 36.45 = 16

She has been a member for 16 months.

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During halftime of a football ​game, a sling shot launches​ T-shirts at the crowd. A​ T-shirt is launched from a height of 5 fee
dimulka [17.4K]
It takes 2 seconds to reach a maximum height of 69 feet, and the range is [5, 69].

The equation is of the form
h(t) = -16t² + v₀t + h₀, where -16 is the gravitational constant, v₀ is the initial velocity, and h₀ is the initial height.  Using the values from our problem, we have:

h(t) = -16t² + 64t + 5

To find the maximum height, we find the vertex.  The first step in this is to find the axis of symmetry, which is given by -b/2a:

-64/2(-16) = -64/-32 = 2

This is our value for t, so it takes 2 seconds to reach the maximum.  Substituting this into our function, we have
h(2) = -16(2²) + 64(2) + 5 = -64 + 128 + 5 = 64 + 5 = 69

This is the maximum height.

The range of heights goes from 5 to 69, inclusive, or [5, 69].
3 0
3 years ago
What is the remainder when x^3 - 1 is divided by (x + 2)?
Semenov [28]

Answer:

-9

Step-by-step explanation:

Use synthetic division here.  The divisor will be -2, which comes from the divisor (x + 2):

-2    /      1    0    0    -1

                   -2    4    -8

       -------------------------

              1      -2   4    -9

The remainder is -9.

4 0
2 years ago
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2 years ago
For what value of x does m 1=90°?
HACTEHA [7]

Answer:

x=70

Step-by-step explanation:

Angle 1 will be 90° when it subtends a 180° arc. That means the sum of 100° and (x+10) must be 180°, so (x+10) = 80°.

We assume this is intended to mean ...

... (x +10)° = 80° . . . . . note the ° symbol added outside parentheses

... x +10 = 80 . . . . . divide by °

... x = 70 . . . . . . . . .subtract 10

_____

If the intent is (x+10°) = 80°, then x=70°.

_____

<em>Comment on the numbers here</em>

Units need to be properly specified in problems of this nature. <em>As written</em>, we probably should assume that 10 is <em>radians</em>, and x is a large negative number, about -8.60374 (radians), or -492.958°.

A number of radians is a "pure number." It has <em>no units</em>. The term "radians" is used to signify that the number is considered to be an angle measure.

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