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2 years ago

I NEED HELP WITH MATH QUESTION PLEASE HELP ME NO LINKS !!!

Mathematics

2 answers:

lukranit [14]2 years ago

6 0

Answer:

21.8

Step-by-step explanation:

1.9 + 9 = 10.9

10.9 x 2 = 21.8

Margarita [4]2 years ago

3 0

Answer:

21.8

Step-by-step explanation:

2×1.9=3.8

2×9=18

total=21.8

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Reil [10]

Answer:

Step-by-step explanation:

Using the sine ratio in the right triangle.

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2 years ago

Find the equation of the line perpendicular to y=−2 that passes through the point (4, −2).

vfiekz [6]

Answer:

x = 4

Step-by-step explanation:

y = - 2 is the equation of a horizontal line parallel to the x- axis.

A perpendicular line is therefore a vertical line parallel to the y- axis with equation

x = c

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3 years ago

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Ulleksa [173]

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3 years ago

Suppose you choose a team of two people from a group of n > 1 people, and your opponent does the same (your choices are allow

jonny [76]

Answer:

The number of possible choices of my team and the opponents team is

$\left\begin{array}{ccc}n-1\\E\\n=1\end{array}\right i^{3}$

Step-by-step explanation:

selecting the first team from n people we have $\left(\begin{array}{ccc}n\\1\\\end{array}\right) = n$ possibility and choosing second team from the rest of n-1 people we have $\left(\begin{array}{ccc}n-1\\1\\\end{array}\right) = n-1$

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We now have the formula

1³ + 2³ + ........... + n³ = $[\frac{n(n+1)}{2}] ^{2}$

1³ + 2³ + ............ + (n-1)³ = $[x^{2} \frac{n(n-1)}{2}] ^{2}$

= $\left[\begin{array}{ccc}n-1\\E\\i=1\end{array}\right] = [\frac{n(n-1)}{2}]^{3}$

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Alisiya [41]

Answer:

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Step-by-step explanation:

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3 years ago

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