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Keith_Richards [23]
3 years ago
5

You are trying to decide which cell phone plan to purchase. Plan A chargeres $40 for a new phone and $20 a month for usage. Plan

B provides the phone for free, but has a fee of $30 a month for usage.
Use the substitution method to determine when the two plans will cost the same.
Mathematics
1 answer:
zzz [600]3 years ago
7 0

Answer:

Hmmm, might be in the 1,000s or an exact number: 2,567

Step-by-step explanation:

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Terms, like terms, coefficients, and constants of 4b+7b+5
Arlecino [84]

Answer:

Terms: 4b, 7b, 5

Like Terms: 4b, 7b

Coefficients: 4, 7

Constants: 5

Step-by-step explanation:

Terms: the numbers in an equation

Like Terms: terms that have the same variables

Coefficients: numbers that are next to a variable

Constants: numbers that don't have a variable

6 0
3 years ago
What's the circumference of a circle with radius of 18 in. Leave answer in terms of pie
Verdich [7]
We Know, Circumference of Circle = 2πr
Here, r = 18
Substitute it in to the expression,
C = 2π(18) = 36π

So, your final answer is 36π

Hope this helps!
7 0
3 years ago
Divide.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
yulyashka [42]
It's not clear whether the problem is to:

(1) divide x^2-4 by \dfrac{x-8}{x-2}, or

(2) divide \dfrac{x^2-4}{x-8} by x-2.

But with only two possible cases, that's not much work to do.

\drac{x^2-4}{\frac{x-8}{x-2}}=\dfrac{(x^2-4)(x-2)}{x-8}=\dfrac{x^3-2x^2-4x+8}{x-8}

Synthetic division yields a quotient and remainder of x^2+6x+44+\dfrac{360}{x-8} (see attachment for how the algorithm was carried out).

In the other case,

\dfrac{\frac{x^2-4}{x-2}}{x-8}=\dfrac{\frac{(x-2)(x+2)}{x-2}}{x-8}=\dfrac{x+2}{x-8}

provided that x\neq2. Synthetic division can be used again here, but this is quite easy to deal with by just doing some easy manipulation of the numerator:

\dfrac{x+2}{x-8}=\dfrac{x-8+10}{x-8}=\dfrac{x-8}{x-8}+\dfrac{10}{x-8}=1+\dfrac{10}{x-8}

(also provided that x\neq 8)

6 0
4 years ago
Find the exact length of the third side.<br> 5<br> 3
grandymaker [24]

I'm going to assume you want to find the third side of a triangle. We can use the pythagorean theorem to solve; a^2 + b^2 = c^2

a = 5

b = 3

c = ?

Solve.

5^2 + 3^2 = c^2

25 + 9 = c^2

34 = c^2

√34 = √c^2

5.8 ≈ c

Best of Luck!

5 0
4 years ago
Increase £89 by 61% round it to two dp
Romashka [77]

Answer:

143.29

Step-by-step explanation:

\frac{14329}{100}

\frac{14329}{100}

<3 Red

3 0
3 years ago
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