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Nitella [24]
3 years ago
9

Which representation has a constant of variation of –2.5? A x –2 –3 –4 –5 y –5 –7.5 –10 –12.5 B 5 x + 2 y = 0 C y = negative 2.5

x + 1 D On a coordinate plane, a line goes through points (negative 1, 0) and (0, negative 2). A B C D
Mathematics
2 answers:
artcher [175]3 years ago
7 0

Answer:

1

Step-by-step explanation:

kakasveta [241]3 years ago
6 0

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Given a term and the common difference, find the explicit formula.<br> 8. a(19) = 135<br> d = 15
Rasek [7]

The explicit formula is a(n) = 15(n – 10)

<u>Solution:</u>

Given, a term a(19) = 135 and common difference d = 15

We have to find the explicit formula.

Now, we know that, a(n) = a + (n – 1)d where a(n) is nth term, a is first term, d is common difference,

So, for a(19)  

\begin{array}{l}{\rightarrow a(19)=a+(19-1) 15} \\\\ {\rightarrow 135=a+18 \times 15} \\\\ {\rightarrow a=135-270} \\\\ {\rightarrow a=-135}\end{array}

Now, we know that, an explicit formula is an expression for finding the nth term,  

So, in our problem, expression for finding nth term is a + (n – 1)d  

\begin{array}{l}{\rightarrow-135+(n-1) 15} \\\\ {\rightarrow-135+15 n-15} \\\\ {\rightarrow 15 n-150} \\\\ {\rightarrow 15(n-10)}\end{array}

Hence, the explicit formula is a(n) = 15(n – 10).

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3 years ago
72.1 divided by 7<br> Estimate the quotient
Ulleksa [173]
Do 72 divided by 7 to get your answer
4 0
2 years ago
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A ball is rolling at a rate of 3 ft per second toward a wall that is 33 feet away. Select all that apply to this situation.
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Answer:

The y-intercept is 33ft. The ball is 33 feet away from the wall

It will take the ball 11 seconds to touch the wall

The slope is -3 feet. The ball is rolling towards the wall at 3 ft per second.

Step-by-step explanation:

I took the test.

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Which complex number has a distance of(sqrt)17 from the origin on the complex plane?
tensa zangetsu [6.8K]
You haven't given any options.
there are infinite numbers which are at a distance of √17 from origin.
Example: 4+i, 1+4i, 17i, 3+2√2i, 4-i etc
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