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nikklg [1K]
3 years ago
5

Please explain I need help with all these

Mathematics
1 answer:
sergey [27]3 years ago
3 0
For all of these you're trying to solve for the variable. The variable is usually a number or symbol.

11) -44+n=36
Step one would be to add 44 to both sides of the equation.

N=80

12) -36=p-91
Step one would be to add -91 to both sides of the equation.

P=55

13) X-225=671
Step one you be to add 225 to both sides of the equation. Although it may seem difficult because of the big numbers, it's the same technique.

14) 19=c-(-12)
Step one on this equation will be a little different. Because there are two negative signs (-), they turn into a plus sign. Remember, two negative signs make a positive sign.

19=c+12

Now you just subtract 12 from each side of the equation.

6=C
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Softa [21]

Answer:

x = 7

3x + 11 = 32

8x + 2 = 58

Step-by-step explanation:

3x + 11 + 8x + 2 = 90

11x + 13 = 90

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a_sh-v [17]

Answer:

x = 8 and y = - 1

Step-by-step explanation:

The equation of a vertical line parallel to the y- axis is

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where c is the value of the x- coordinates the line passes through

The line passes through (8, - 1 ) with x- coordinate 8, then

x = 8 ← equation of vertical line

The equation of a horizontal line parallel to the x- axis is

y = c

where c is the value of the y- coordinates the line passes through

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vovangra [49]

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Step-by-step explanation:

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2.6.5 A plant physiologist grew birch seedlings in the green-house and measured the ATP content of their roots. (See Example 1.1
Ilya [14]

Answer:

(a)\ \bar x = 1.19

(b)\ \sigma_x = 0.18

Step-by-step explanation:

Given

n = 4

x: 1.45\ 1.19\ 1.05\ 1.07

Solving (a): The mean

This is calculated as:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x = \frac{1.45 + 1.19 + 1.05 + 1.07}{4}

\bar x = \frac{4.76}{4}

\bar x = 1.19

Solving (b): The standard deviation

This is calculated as:

\sigma_x = \sqrt{\frac{\sum(x - \bar x)^2}{n - 1}}

So, we have:

\sigma_x = \sqrt{\frac{(1.45 -1.19)^2 + (1.19 -1.19)^2 + (1.05 -1.19)^2 + (1.07 -1.19)^2}{4 - 1}}

\sigma_x = \sqrt{\frac{(0.1016}{3}}

\sigma_x = \sqrt{0.033867}

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4 0
3 years ago
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