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r-ruslan [8.4K]

2 years ago

6

cell Phone plan A costs $70 per month and comes with a free $500 phone, cell phone B costs $50 per mouth but does not come with

a phone. If you buy the $500 phone an choose plan , how many mouths is it until your cost is the same as plan A’s?

1 answer:

Levart [38]2 years ago

7 0

Answer:

It will be 25 months

Step-by-step explanation:

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A merchant has coffee worth $20.00 per pound that she wishes to mix with 70 pounds of coffee with $90.00 per pound to get a mix

Crank

20x-1000 +4000 = 60x

20x-60x= -4000 +1000

-40x= -3000

x= -3000/-40

75 The mix will be 75 lbs

And $20 coffee will be 75 -50 = 25lbs

6 0

2 years ago

6x+18=h(3x+9) what value the constant h in the equation shown below will result in a infinite number of solutions

pav-90 [236]

For there to be an infinite number of solutions, the quantity on the left side of the equation must be the same as on the right.
First, distribute the equation to get
6x + 18 = 3xh + 9h
If h = 2, the equation on the right would also be 6x + 18 which would yield the same equation and hence an infinite number of solutions
So the answer is h = 2

4 0

2 years ago

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The variable Z is directly proportional to X. when X is 15, Z has the value of 45. what is the value of Z when X=23

IrinaVladis [17]

$If\ Z\ is\ directly\ proportional\ to\ X\ then\ \frac{Z}{X}=const.\\------------------------\\X=15\ and\ Z=45\\\\X=23\ and\ Z=?\\\\\frac{Z}{23}=\frac{45}{15}\to\frac{Z}{23}=3\ \ \ \ |multiply\ both\ sides\ by\ 23\\\\\huge\boxed{Z=69}$

8 0

3 years ago

Quadrilateral BECK has coordinates B(-2,3), E (3,8), C (4, 1) and K(-1, -4).

andreyandreev [35.5K]

Answer:

there u go

Step-by-step explanation:

6 0

1 year ago

Ron deposits $2,000 into an account that receives 3.1% interest compounded continuously. How much money is in the account after

Alla [95]

In general, the continuous compounding interest formula is

$\begin{gathered} P(t)=Pe^{rt} \\ P\rightarrow\text{ initial amount} \\ t\rightarrow\text{ time} \\ r\rightarrow\text{ interest rate} \end{gathered}$

Therefore, in our case,

$P(t)=2000e^{0.031t}$

Set t=9 as shown below

$\Rightarrow P(9)=2000e^{0.279}\approx2643.615...$ <h2>The exact answer is 2000e^(0.279)</h2>

8 0

4 months ago