4 years ago

Please help due today!!!

Mathematics

1 answer:

sweet-ann [11.9K]4 years ago

4 0

The first answer is B

The second answer is D

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Andre ran a 100 meter race in 12 seconds. What was his average speed as he ran?

Tatiana [17]

his average speed as he ran: V = S/t = 100/12 = 25/3 (m/s)

ok done. Thank to me :>

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3 years ago

If the first term of the series is 30 and the 14th term is 95, what is the sum of all the terms of the series?

RideAnS [48]

Answer:

D) $S_{14} = 875$ .

Step-by-step explanation:

Given : If the first term of the series is 30 and the 14th term is 95,

To find : what is the sum of all the terms of the series.

Solution : We have given

First term = 30 .

14 th term = 95.

Sum of all term = $S_{n} =\frac{n(first\ term +\ last\ term)}{2}$ .

Here, n = 14.

$S_{14} =\frac{14(30 +95)}{2}$ .

$S_{14} =\frac{14(125)}{2}$ .

$S_{14} =\frac{1750}{2}$ .

$S_{14} = 875$ .

Therefore, D) $S_{14} = 875$ .

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4 years ago

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what could the number -18 represent? using the same situation, what would its opposite represent? what would 0 represent?

kenny6666 [7]

-18= you owe 18 dollars
18= you earned 18 dollars
0= you owe nothing/you earned nothing

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4 years ago

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I need help with this 1 question

Gemiola [76]

7 × 8 × 8 = 448

and that's it

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PLz help me and show your work.

Artemon [7]

$5 \sqrt{18} - \sqrt{32} \\= 5 \sqrt{9 \times 2} - \sqrt{4 \times 4 \times 2} \\ = 5 \times 3 \times \sqrt{2} - 2 \times 2 \times \sqrt{2} \\ = 15 \sqrt{2} - 4 \sqrt{2} \\ = \boxed{11 \sqrt{2} }$

<h3>11√2 is the right answer.</h3>

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3 years ago