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gizmo_the_mogwai [7]
2 years ago
8

While grading her students' most recent quiz on equation solving, Mrs. Jones calculated that approximately forty percent of her

students answered question number 14 with multiple choice option B, while the other sixty percent answered A or C. Question #14 from Mrs. Jones's students' most recent quiz: 14) Solve the single variable equation for n. 3(-n + 4) + 5n = 2n n = 3 no solution infinitely many solutions Part 1: Use inverse operations and rules of equation solving to determine the correct answer to Mrs. Jones's quiz question number 14. Include all of your work in your final answer. Part 2: Use complete sentences to compare the similarities and differences of each of the multiple choice answer options A-C. In your answer, rationalize why a student would choose each of the options as the correct answer.
Mathematics
2 answers:
iris [78.8K]2 years ago
5 0

Answer:

no its has no solution

Step-by-step explanation:

astra-53 [7]2 years ago
4 0

Answer:

 

The correct answer was given: Brain

y = (x+5)(x+2)

step-by-step explanation:

we are given the following the quadratic function and we are to rewrite it in intercept or factored form:  

y = x^2 + 7x + 10  

we can factorize the given quadratic function such that when multiplied, the factors give a product of 10 and when added, they give a result of 7.

y=x^2+5x+2x+10

y=x(x+5)+2(x+5)

y=(x+5)(x+2)

therefore, the factored form of the given function is y = (x+5)(x+2)

Step-by-step explanation:

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Suppose X is the breaking strength (newtons) of a material, and X is normally distributed with
Veronika [31]

Answer:

a) 0.997 is the  probability that the breaking strength is at least 772 newtons.

b) 0.974  is the probability that this material has a breaking strength of at least 772 but not more  than 820    

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 800 newtons

Standard Deviation, σ = 10 newtons

We are given that the distribution of  breaking strength is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P( breaking strength of at least 772 newtons)

P(x \geq 772)

P( x \geq 772) = P( z \geq \displaystyle\frac{772 - 800}{10}) = P(z \geq -2.8)

= 1 - P(z

Calculation the value from standard normal z table, we have,  

P(x \geq 772) = 1 - 0.003 = 0.997 = 99.7\%

0.997 is the  probability that the breaking strength is at least 772 newtons.

b) P( breaking strength of at least 772 but not more  than 820)

P(772 \leq x \leq 820) = P(\displaystyle\frac{772 - 800}{10} \leq z \leq \displaystyle\frac{820-800}{10}) = P(-2.8 \leq z \leq 2)\\\\= P(z \leq 2) - P(z < -2.8)\\= 0.977 - 0.003 = 0.974 = 97.4\%

P(772 \leq x \leq 820) = 97.4\\%

0.974  is the probability that this material has a breaking strength of at least 772 but not more  than 820.

7 0
2 years ago
Given the equation −4Square root of x minus 3 = 12, solve for x and identify if it is an extraneous solution.
Darina [25.2K]

Answer:

There is no solution for the given radical equation.

x = 225/16 is an extraneous solution.

Step-by-step explanation:

The given equation is  

Add 3 to both sides of the equation

Squaring both sides

Divide both sides by 16

Substituting back the value of x in original equation to check the extraneous solution.

 

Since -18≠ 12. Hence, the value of x does not satisfy the equation.

Therefore, x = 225/16 is an extraneous solution.

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Can you Solve this?<br> IF AT=4 CAT=6 CROW=8 BRAIN=10<br><br> TWISTER = ?
Artyom0805 [142]
The answer is 14 there just adding an extra letter each time twister has 7 letters
3 0
1 year ago
Kyla sold her laptop to Fely in a condition that Fely should give he a downpayment of Php8,000 and Fely will pay her Php1,000 ev
olga55 [171]
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5 0
2 years ago
Five less than a number squared is 76, just write equation plz
Volgvan

Answer:

x^{2} - 5 = 76

Step-by-step explanation:

x^{2} = 81

x = 9

3 0
2 years ago
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