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WARRIOR [948]
2 years ago
5

How could you add -13 + 10? A Add 13 + 10, and keep the negative sign from the -13. B Add 13 + 10, and keep the positive sign fr

om the 10. C Subtract 13 - 10, and keep the negative sign from the -13. D Subtract 13 - 10, and keep the positive sign from the 10.
Mathematics
1 answer:
Vinvika [58]2 years ago
7 0
Answer is C

Explanation-
Here’s an easier way to add negative numbers. Unlike adding positive numbers and positive numbers together and getting a larger positive number, do the opposite of what the symbol is telling you.

For example:
-12 + 9 = -4

Instead of adding, I subtract 12 and 9 to get to 4 but the reasons the four is a negative is because any number from 0 to any higher value is always considered a negative.
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Step-by-step explanation:

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You use your mobile phone to phone home every day. It cost £15 per moth and £0.18 per minute for phone calls. how much will you
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Joe’s Plumbing and Mark’s Plumbing have different ways of charging their customers. The function defined by J(t)=45t represents
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Espana
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First, subtract to get the difference.
2.85 – 2.78 = 0.07

Next, divide 2.78 by 100
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3 years ago
Find an explicit rule for the nth term of the sequence.The second and fifth terms of a geometric sequence are 18 and 144, respec
vova2212 [387]

Given:

second term = 18

fifth term = 144

The nth term of a geometric sequence is:

\begin{gathered} a_n\text{ = ar}^{n-1} \\ Where\text{ a is the first term} \\ r\text{ is the common ratio} \end{gathered}

Hence, we have:

\begin{gathered} \text{ar}^{2-1}\text{ = 18} \\ ar\text{ = 18} \\  \\ ar^{5-1}=\text{ 144} \\ ar^4\text{ =144} \end{gathered}

Divide the expression for the fifth term by the expression for the second term:

\begin{gathered} \frac{ar^4}{ar}\text{ = }\frac{144}{18} \\ r^3\text{ = }\frac{144}{18} \\ r\text{ = 2} \end{gathered}

Substituting the value of r into any of the expression:

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Hence, the explicit rule for the sequence is:

a_n\text{ = 9\lparen2\rparen}^{n-1}

5 0
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