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Alina [70]
3 years ago
11

Evaluate 15r+6 (60-r)for r =20,30 and 40. what conclusion can you draw

Mathematics
1 answer:
7nadin3 [17]3 years ago
6 0

15 (20)+6(60-20)= 240

15 (30)+6(60-30)=630

15(40)+6(60-40)=720


you can conclude that none of the numbers have anything in common except that they all end in a 0

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I need help please it’s due today I forgot how to do this :(
choli [55]

Answer:

Samantha payed 12.71$ for her purchase.

Step-by-step explanation:

I may have misunderstood the question, but it looks like you can use a calculator for this!

6.19 + 2.85 + 2.29 + 1.38 =

12.71

8 0
3 years ago
Sue and Jim are driving on the highway. Sue takes 24 minutes to drive 40 km. If Jim drives at the same rate, how long will it ta
NemiM [27]
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2 years ago
3[5x - 4] - [-30 - 45x]
Nimfa-mama [501]
3(5x - 4) - (-30-45x)
= 15x - 12 + 30 + 45x <- Distributive Property
=60x + 18 <- Combine Like Terms

If you're trying to solve for 0:

0 = 60 x + 18
-18 = 60x <- Subtracted 18 from both sides
x = \frac{-18}{60} = \frac{-9}{30} <- Divided both sides by 60 and then simplified.

x = \frac{-9}{30} <- Fraction Form
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Give Brainliest for simple answer plz :P
3 0
2 years ago
Read 2 more answers
An appliance is for sale at either (a) P15,999 cash or (b) on terms, P1,499 each month for the next 12 months.  Money is 9% comp
frutty [35]

Answer:

Cash price

Step-by-step explanation:

The computation is shown below:

The Interest rate per month (r) = (9% ÷ 12) = 0.75%

Now Present value of the monthly payment is

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= 1,499 × {[(1 + 0.75%)^12 - 1] ÷ 0.75%}

= 18,748.89

And the cash price is 15,999

So, the cash price would be lower

5 0
3 years ago
What is the exponential form of root 17
shusha [124]

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The rule is

\sqrt[n]{x} = x^{1/n}

the n is the index of the root. For square roots, n = 2, so,

\sqrt[n]{x} = x^{1/n}\\\\\sqrt[2]{17} = 17^{1/2}\\\\\sqrt{17} = 17^{1/2}\\

4 0
3 years ago
Read 2 more answers
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