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tensa zangetsu [6.8K]
3 years ago
12

A school principal of 890 students needs to determine what percentage of students passed and did not pass a statewide examinatio

n. 300 students passed. Round to the nearest percent.
What percent did not pass the test?
Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Answer:

Percentage = 66%

Step-by-step explanation:

Let the number of students that pass be P.

Let the number of students that fail be F.

Given the following data;

Total number of students, T = 890 students

P = 300 students

To find the percentage that failed;

First of all, we would determine the number of students that failed using the mathematical expression given below;

Total students, T = P + F

890 = 300 + F

F = 890 - 300

F = 590

Percentage = \frac {590}{890} * 100

Percentage = 0.6629 * 100

Percentage = 66.29 ≈ 66%

Therefore, the percentage of students that failed or didn't pass is 66%.

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Answer:

5/8 + 7/12 =29/24

Step-by-step explanation:

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Solve by factorising<br><br><img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" id="TexFormula1" title="x^{2}" alt="x^{2}" align="abs
Paladinen [302]

Step-by-step explanation:

\underline{ \underline{ \text{Solving \: a \: quadratic \: equation \: by \: factorisation \: method}}} :

In this method , the second order of polynomial ax² + bx + c is factorised and expressed as the product of two linear factors. Then each linear factor is separately solved to get the required solutions of the equation by applying zero factor property. In zero factor property , if p•q = 0 , then either p = 0 or q = 0 . In other words , if the product of two numbers is 0 , then one or both of the numbers must be 0.

\underline{ \underline{ \text{Let's \: solve}}} :

\tt{ {x}^{2}  + 16x +  55 = 0}

Here , we have to find the two numbers that multiplies to 55 and adds to 16.

⤑ \tt{ {x}^{2}  + (11 + 5)x + 55 = 0}

⤑ \tt{ {x}^{2}  + 11x + 5x +  55 = 0}

⤑ \tt{x(x + 11) + 5(x + 11) = 0}

⤑ \tt{(x + 5)(x + 11) = 0}

Either :

\tt{x + 5 = 0 \: \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \: Or :  \:  \:  x + 11 = 0}

\sf{⟶ x  = 0 - 5} \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:    \:⟶  x =  0 - 11

\tt{⟶x =  - 5 } \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:     \:  \:⟶   x =  - 11

\red{ \boxed{ \boxed{ { \tt{Our \: final \: answer :  \boxed{ \underline{  \bold{ \tt{x  =  - 5 \: , - 11}}}}}}}}}

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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Your dinner bill comes to $19.68. Estimate your total cost for dinner with a 5% tax and a 20% tip on the original bill. Justify
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