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photoshop1234 [79]
3 years ago
15

3-X²=-7 How do I solve

Mathematics
1 answer:
irga5000 [103]3 years ago
8 0

Answer:

x = 3.162

Step-by-step explanation:

Your first step is to get x by itself by subtracting 3 from both sides.

3-x^{2} = -7

-x^{2} = -10

Now multiply by both sidex by -1 to make x positive.

x^{2} = 10

now take the square root of both sides.

\sqrt {x^{2} = \sqrt{10}

x = \sqrt{10}

x = 3.162

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Catherine Lewiston is currently earning an annual salary of $36,080 at
Nezavi [6.7K]

Answer:

$212.31

Step-by-step explanation:

divide $36,080 by 52 weeks in a year. you get $693.84 weekly.

divide $47,120 by 52 weeks in a year. you get $906.15 weekly.

then subtract 906.15 from 693.84 and you get 212.31

5 0
3 years ago
Collette wanted to know if there was a difference in favorite food types among students at her large high school. She took a ran
AleksandrR [38]

Answer:

(29-23)²/23 + (16-23)²/23 + (19-23)²/23 + (28-23)²/23

Step-by-step explanation:

Given :

n(American) = 29

n(Chinese) = 16

n(Mexican) = 19

n(Italian) = 28

Expected value = (29 + 16 + 19 + 28) / 4

Where, 4 = sample size

Expected value, E = 23

χ² = (Observed value - Expected value)² / expected value

χ² = (29-23)²/23 + (16-23)²/23 + (19-23)²/23 + (28-23)²/23

3 0
2 years ago
Uhhhhh help…..Meh plzzzz
melamori03 [73]

Answer:

g (f (-3)) = -9

Step-by-step explanation:

Given:

Graphs of f(x) and g(x) are given

From the given graphs:

Finding g ( f (-3) ):

-----> g ( f (-3) )

-----> g(5)

-----> -9

so,

g ( f (-3) ) = -9

4 0
2 years ago
Find the output, kkk, when the input, ttt, is -7−7minus, 7.<br> k = 10t-19k=10t−19
Sati [7]

The output k at input t = -7 is -89

Step-by-step explanation:

In order to find the value of a expression on given number, we put the number in given expression in place of independent variable

So,

Given expression is:

k = 10t-19

It is given that the value of t has to be -7

so putting t=-7 in the expression

k = 10(-7)-19\\k = -70-19\\k = -89

Hence,

The output k at input t = -7 is -89

Keywords: Expressions, input, output

Learn more about expressions at:

  • brainly.com/question/9723881
  • brainly.com/question/9720317

#LearnwithBrainly

8 0
3 years ago
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rodikova [14]

Answer:

By using the one the straight line degrees if your doing it for a circle or 180 degrees for a triangle.

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3 years ago
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