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neonofarm [45]
3 years ago
14

19. A teacher tells 36 students to form 4 equal groups. Write and solve a

Mathematics
1 answer:
olchik [2.2K]3 years ago
6 0

4 x = 36

Step-by-step explanation:

Because the groups have an equal number of students, we assume that each of the groups has <em>x </em>number of students.

Therefore since there is <em>x</em> number of students in each of the 4 groups, there is 4 * x number of total students in all groups combined.

Since the question already indicates that there are a total of 36 students in the class, then we can indicate that..

4x = 36

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The answer would be y=6

Step-by-step explanation:

This is because when we are looking at horizontal lines, we look at the y-coordinate to determine a line because the y-axis is what determines height.

If you liked my answer, please consider giving me a Brainliest!

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Determine if each graph represent a direct proportional or not
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3 years ago
Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real
garik1379 [7]

The complete question is

"Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real number solutions? (The related quadratic function will have two x-intercepts.) Check all that apply.

0 = 2x^2 – 7x – 9

0 = 4x^ 2 – 3x – 1

The quadratic equations that have real number solutions are; 4x^2 – 3x – 1, and 2x^2 – 7x – 9.

<h3>What is the formula for Discriminant?</h3>

The formula for finding the discriminant is

b^2 - 4ac

The solution contains the term \sqrt{b^2 - 4ac} which will be:

Real and distinct if the discriminant is positive

Real and equal if the discriminant is 0

Non-real and distinct roots if the discriminant is negative

For the quadratic equation 2x^2 - 7x - 9

b^2 - 4ac

= (-7) ^2 - 4( 2) ( -9)\\\\= 49 + 72 = 121

This equation has two real number solutions.

For the quadratic equation 4x^ 2 - 3x- 1

b^2 - 4ac

= (-3) ^2 - 4( 4) ( -1)\\\\= 9 + 16 = 25

This equation will have two real number solutions.

Learn more on discriminant here:

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5 0
2 years ago
Can someone explain how I get this answer for this question cause I’m confused since it’s getting lower? Please explain step by
Fudgin [204]

Answer:

1.2  ,  0.4

Step-by-step explanation:

Each number is divided by 3.

97.2 ÷ 3 = 32.4

32.4 ÷ 3 = 10.6

10.6 ÷ 3 = 3.6

3.6 ÷ 3 = 1.2

1.2 ÷ 3 = 0.4

5 0
3 years ago
Find the value of x.<br> A. 80°<br> B. 70°<br> C. 60°<br> D. 50°
borishaifa [10]

Answer:

A

Step-by-step explanation:

80 degree becaue a triangle = 180 degress

180 - 100 = 80

7 0
2 years ago
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