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insens350 [35]
3 years ago
12

How many students got eight or more answers correct?

Mathematics
2 answers:
slamgirl [31]3 years ago
7 0

Answer:

9

Step-by-step explanation:

You have to count the number of dots there are after the number 8. (This includes the dotes above 8.)

Murljashka [212]3 years ago
3 0

Answer:

<em>9 students</em>

Step-by-step explanation:

Assuming that these dots represent students, let us begin with the amount of students that answered 8 questions right;

Students who got 8 answers right ⇒ 4 students,

Students who got 8 answers right ⇒ 3 students,

Students who got 10 answers right ⇒ 2 students

Now we are to compute the value of the students who received 8 or more answers right, provided the questions are out of 10;

Students who received 8 or more answers right; 4 + 3 + 2 = 9 students

<em>Solution; 9 students</em>

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Answer:

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Step-by-step explanation:

A quadratic equation is given to us and we need to solve the equation using the quadratic formula . The given equation is ,

\rm\implies 3x^2=2(2x+1)

Open the brackets in RHS ,

\rm\implies 3x^2= 4x + 2

Transpose all the terms to LHS ,

\rm\implies 3x^2-4x-2=0

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\rm\implies\red{ x =\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}}

Using the quadratic formula , we have ,

\rm\implies x =\dfrac{-(-4) \pm \sqrt{(-4)^2-4(3)(-2) }}{2(3)}

Simplify ,

\rm\implies x =\dfrac{4 \pm \sqrt{16+24 }}{6}

\rm\implies x = \dfrac{4\pm \sqrt{40}}{6}

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\rm\implies\boxed{\pink{\frak{ x = \dfrac{2+\sqrt{10}}{3},\dfrac{2-\sqrt{10}}{3}}}}

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2 years ago
Cate solved an inequality to find c, the possible number of cats that a shelter can house. She found that c &lt; 28. Which state
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Answer:

The shelter can house 17 cats because

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Step-by-step explanation:

We cannot have fractions of cats, and we cannot have a negative number of cats. So the third statement is reasonable because c < 28.

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Simplify to create an equivalent expression. 2(−n−3)−7(5+2n)
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3 years ago
the earth rotates about its axis once every 23 hours, 56 minutes and 4 seconds. Approximate the number of radians the earth rota
marishachu [46]

Answer:

\frac{\pi}{43082}\text{ radians per second}

Step-by-step explanation:

Given,

Time taken in one rotation of earth = 23 hours, 56 minutes and 4 seconds.

Since, 1 minute = 60 seconds and 1 hour = 3600 seconds,

⇒ Time taken in one rotation of earth = (23 × 3600 + 56 × 60 + 4) seconds

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Hence, the number of radians in one second is \frac{\pi}{43082}

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3 years ago
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