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3 years ago

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The number of club members is at least 25

1 answer:

gladu [14]3 years ago

4 0

5 x 5 is your answer
Have a great day

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A phone company has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minu

jok3333 [9.3K]

Answer:

Linear equation for the monthly cost of the cell plan is $10+0.15x$

Step-by-step explanation:

Let u denotes a flat monthly fee and v denotes amount charged per minute.

As the monthly cost is $71.50 if a customer uses 410 minutes,

$71.50=u+410v$ (i)

As the monthly cost is $118 if a customer uses 720 minutes,

$118=u+720v$ (ii)

Subtract (i) from (ii)

$118-71.50=u+720v-u-410v\\46.5=310v\\v=\frac{46.5}{310}\\ v=0.15$

Put $v=0.15$ in (i)

$71.50=u+410(0.15)\\71.50=u+61.5\\u=71.50-61.5\\u=10$

As x denotes the number of monthly minutes used,

linear equation for the monthly cost of the cell plan is $10+0.15x$

5 0

3 years ago

Help i don’t know how to do this

never [62]

Are you finding the volume I’ll comment the answer under this

7 0

2 years ago

Solve the system of equations below by graphing. x^2-2x+y-3=0 x2+y=0 What is the solution rounded to the nearest hundredth? (–2.

Olin [163]

Answer:

$(-1.5,-2.25)$

Step-by-step explanation:

The first function is $x^2-2x+y-3=0$ .

We make y the subject of this function to obtain,

$y=3+2x-x^2$ .

This is graph will open downwards because $a=-1\:$ .

At y-intercept of this graph, $x=0$ .

$\Rightarrow y=3+2(0)-(0)^2$

$\Rightarrow y=3$

The y-intercept is $(0,3)$ .

At x-intercept $y=0$ .

$0=3+2x-x^2$

$0=(x+1)(x-3)$

$\Rightarrow x=-1,x=3$ .

The x-intercepts are,

$(-1,0),(3,0)$

Also the vertex form of the function is,

$y=-(x-1)^2+4$ .

Therefore the vertex of the parabola is $(1,4)$ .

We plot all the points obtained and draw a smooth curve to obtain the curve as show in the diagram.

The second function is

$x^2+y=0$

$\Rightarrow y=-x^2$

This is the graph of the basic quadratic function $y=x^2$ that has been turned upside down.

This graph also has the vertex,y-intercept and x-intercept all at $(0,0)$ .

We now graph this too on the same graph sheet as the first one to obtain the blue graph as shown in the diagram.

These two graphs intersect at the point, $(-1.5,-2.25)$ .

Therefore the correct answer is B

3 0

3 years ago

A substance has a mass of 10g and a volume of 5cm^3 whats the density

sergiy2304 [10]

Density= Mass/Volume
10/5=2

If I'm correct the density should be 2 cm^3

7 0

3 years ago

Paula is planning a dinner dance. She wants to keep the ticket price as low as possible.

Alex17521 [72]

Answer:

After 200 students, it would better to hire Band A

Step-by-step explanation:

350+ 1.25x = 600

1.25x = 250

x = 200

at 200 students the cost is the same for Band A and Band B

at 201 students Band A will be cheaper then Band B

3 0

3 years ago