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Mazyrski [523]
3 years ago
9

There are 20 students in a math class who have brown hair. This represents 80 percent of the students in the class. Which equati

on can be used to find the total number of students in the math class?

Mathematics
2 answers:
Ghella [55]3 years ago
6 0
25 students is the answer!
bonufazy [111]3 years ago
6 0

Answer:                                

Step-by-step explanation:

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Calculate the area of a circle with the radius of 5cm (1dp)
quester [9]

Answer:

25π ≈ 78.5 cm squared

Step-by-step explanation:

Area of circle= πr²

Substitute: π(5)²

Solution: 25π or about 78.5 cm²

7 0
3 years ago
Find the coordinates of the centroid of triangle RST. SHOW YOUR WORK so I can see if the answer makes sense (no links)
zimovet [89]

Note the coordinates of each point: R(-4, 5), S(5, 1), T(2, -3).

The centroid is the point whose coordinates are the average of the coordinates of R, S, and T.

<em>x</em>-coordinate: (-4 + 5 + 2)/3 = 3/3 = 1

<em>y</em>-coordinate: (5 + 1 - 3)/3 = 3/3 = 1

So the centroid is (1, 1).

3 0
2 years ago
Evaluate the algebraic expression.<br> z^2+1+y when y=4, and z=3.
Luden [163]

Answer:

your question is

z²+1+y where, y=4,z=3

3²+1+4

9+5

14

is your answer

5 0
1 year ago
What number can be used as a common denominator for the fractions 1/4 and 5/6
Korvikt [17]

Answer:

<em>12</em>

Step-by-step explanation:

<em>1/4= 3/12</em>

<em>5/6=10/12</em>

<em>So they both have a common denominator of 12!</em>

Hope this helps, have a good day. c;

8 0
3 years ago
A parachutist jumped from an airplane at an elevation of 11,880 feet above the ground.
Vika [28.1K]

Answer:

[D] -552.5 feet

Step-by-step explanation:

You have to multiply 5 by -110.5

Hence, Answer = -552.5 feet

[RevyBreeze]

5 0
2 years ago
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