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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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Which of the following would be the most logical first step to solving this
NikAS [45]

Answer:

D is correct option

Step-by-step explanation:

The correct option is D.

The standard quadratic equation is ax²+bx+c=0

Where a and b are coefficients and c is constant.

It means that constant are on the L.H.S and there is 0 on the right hand side.

Therefore to make it a quadratic equation first of all you have to add 11 at both sides so that the R.H.S becomes 0.

The given equation is:

2x2-x+ 2 = -11

If we add 11 on both sides the equation will be:

2x2-x+ 2 +11= -11+11

2x^2-x+13=0

Thus the correct option is D

You can further solve it by applying quadratic formula....

8 0
3 years ago
What is the equation of a circle that has a center at (-4, 10) and a radius of 8?
mars1129 [50]

Answer:

The equation of the circle is (x + 4)^2 + (y - 10)^2 = 64, third option is correct.

Step-by-step explanation:

Equation of a circle:

The equation of a circle with center (x_0,y_0) and radius r is given by:

(x - x_0)^2 + (y - y_0)^2 = r^2

Center at (-4, 10)

This means that x_0 = -4, y_0 = 10.

Radius of 8:

This means that r = 8. So

(x - x_0)^2 + (y - y_0)^2 = r^2

(x - (-4))^2 + (y - 10)^2 = 8^2

(x + 4)^2 + (y - 10)^2 = 64

The equation of the circle is (x + 4)^2 + (y - 10)^2 = 64, third option is correct.

3 0
3 years ago
You earn $25 for washing 5 cars how much do you earn for washing 4 cars
irakobra [83]
You will earn $20 washing 4 cars
7 0
3 years ago
Find the cosine ratio of angle Θ. Hint: Use the slash symbol ( / ) to represent the fraction bar and enter the fraction with no
lina2011 [118]
Find the cosine ratio of angle ΘΘ. Hint: Use the slash symbol ( / ) to represent the fraction bar and enter the fraction with no spaces. (4 points)

Cosine=adjacent/hypotenuse
adjacent=8
Hypotenuse =17

cosΘ=8/17
3 0
3 years ago
Read 2 more answers
Please answer CORRECTLY for brainliest guarantee. If your answer is not correct or does not have a explanation I will report you
Scorpion4ik [409]

Answer:

c. 45.34ft

Step-by-step explanation:

When leg one of the triangle is 15ft and leg two is 17 ft you would take   17^2 + 15^2 and then you find the square root of that (514) to get the hypotenuse of the triangle. After that you multiply by two to account for the 2/2 sqaure foot per each unit

4 0
3 years ago
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