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3 years ago

Help!! Due Tomorrow!!

Mathematics

1 answer:

Gekata [30.6K]3 years ago

8 0

7.)9.68
8.)600
9.)7
10.) cant read
11.) 32
12.) 8
13.) 14
14.) -50
16.) 36
17.) -34, -27, -13, 12, 36, 63

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Work out an expression for the nth term for this sequence:<br><br> 23,35,47,49

notsponge [240]

<h3>Answer:</h3>

$a_n = 23 +12(n -1)$

<h3>Explanation:</h3>

The $n$ th term of an arithmetic sequence is explicitly defined as $a_n = a_1 +d(n -1)$ where $a_1$ is the first term of the sequence and $d$ is the the common difference.

From the given first five terms of the sequence we can see that the first term is $23$ so $a_1 = 23$ .

The common difference, $d$ , can be calculated by $a_n - a_{n -1}$ so we'll find the common difference of the given sequence by letting $n = 2$

$d = a_2 - a_{2 -1} \\d = a_2 -a_{1} \\d = 35 -23 \\ d = 12$ .

Now let's plug everything we know.

$a_1 = 23$

$d = 12$

$a_n = 23 + 12(n -1)$

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2 years ago

Find the percent of increase for 4 to 7. round to the nearest tenth if necessary. also someone please explain how to do this.

dem82 [27]

Answer:

75%

Step-by-step explanation:

The percent increase is calculated as

percent increase = $\frac{increase}{original number}$ × 100%

increase = 7 - 4 = 3, thus

% increase = $\frac{3}{4}$ × 100% = $\frac{3(100)}{4}$ = 75%

8 0

3 years ago

What is the answer<br><br> ?

AleksandrR [38]

In 2 hours, the train will cover 120 miles, in 4 hours, the train will cover 240 miles. The train covered 120 more miles in 4 hours than it did in 2 hours.

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2 years ago

11 and 12 and the work plsss

Aliun [14]

Answer:

Step-by-step explanation:

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2 years ago

PPLLLLLLLLLLLLLLEEEEEEEEEEEAAAAAAAAAASSSSSSSSSSSSSEEEEEEEEEE<br> Help

STALIN [3.7K]

Answer:

its 35.

Step-by-step explanation:

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2 years ago