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MakcuM [25]
3 years ago
13

Will mark Brainliest and 50 points please help

Mathematics
1 answer:
allochka39001 [22]3 years ago
4 0

Answer:

The answer would be $37.14

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What are the solutions of the equation<br> x^2 - 30 = x?
sashaice [31]

Answer:

x = 6 , − 5

Step-by-step explanation:

Move  x   to the left side of the equation by subtracting it from both sides.  x^ 2 − 30 − x = 0

x2-30-x=0

Use the quadratic formula to find the solutions. − b ± √ b 2 − 4 ( a c )/ 2 a  

-b±b2-4(ac)/2a  

Substitute the values  

a = 1  ,  b = − 1  , and  c = − 30  

into the quadratic formula and solve for  x

x . 1 ± √ ( − 1 ) 2 − 4 ⋅ ( 1 ⋅ − 30 )/ 2 ⋅ 1    

Simplify.

x = 1 ± 11/ 2    

The final answer is the combination of both solutions.

x = 6 , − 5

8 0
4 years ago
Kevin must take five tests in a math class. If his scores on the
Studentka2010 [4]

Answer:

95 %

Step-by-step explanation:

95 + 71 + 69 + 84 + 83 / 5 = 80.4  

5 0
3 years ago
Read 2 more answers
Alessandro wrote the quadratic equation –6 = x2 + 4x – 1 in standard form. What is the value of c in his new equation?
Black_prince [1.1K]

Answer:

5

Step-by-step explanation:

To write it in standard form, we set the equation equal to 0.  To do this, we add 6 to each side:

-6+6 = x² + 4x - 1 + 6

0 = x² + 4x + 5

The related function is

y = x² + 4x + 5

The value of c in this function is 5.

7 0
3 years ago
what type of mathematical relationship should you expect to see after plotting the aborbance and the concentration data? explain
ICE Princess25 [194]
  • The <u>relationship</u> between <em>absorbance and concentration is known as the </em><em>Beer-Lambert Law</em><em>.</em>
  • This <u>relationship</u> is linear, meaning that <em>absorbance is directly proportional to concentration</em>.
  • The <u>absorbance</u><u> of a </u><u>solution</u> is directly <em>proportional to the concentration of the </em><em>light-absorbing</em><em> species</em> in the solution.

<h3>The Relationship Between Absorbance and Concentration</h3>

As the concentration of a light-absorbing species in a solution increases, the absorbance of the solution also increases. <u>This relationship is known as the </u><u>Beer-Lambert Law</u><u>. </u>

  • The Beer-Lambert Law states that absorbance is directly proportional to concentration. This means that as the concentration of a light-absorbing species in a solution increases, the absorbance of the solution also increases.
  • This relationship is linear, meaning that there is a direct relationship between absorbance and concentration.
  • The absorbance of a solution is directly proportional to the concentration of the light-absorbing species in the solution.

Learn more about Mathematical relationship: brainly.com/question/25638609

#SPJ4

5 0
1 year ago
Answer this for brainilest and 30points (no links or internet answer or you will get flagged
zysi [14]
B=9

Explanation:
Multiply everything by 3 to get rid of the fraction. The new equation is 2b +15 = 60 -3b. Next, add three b to 2b and subtract 15 from 60. New equation is 5b = 45. Divide both sides by 5. B = 9.
4 0
3 years ago
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