The histogram below summarizes the grades (out of 50) of all the students who wrote a midterm exam. Number of Students 12 9 35 20 15 10 5 10 15 20 12 25 30 Grade 21 35 30 40 a. How many class intervals were used in the histogram? b. How many students wrote midterm exam? C. What is the modal class? 39 45 21 50 55

Q: -8+2t 4

A: Question is based on linear equations solving.

Q: 4 + 5x = 36 - 3x

A: We will solve for 'x' .

Q: X+2 4 +7= - x+9 X

A:

Q: b- 4b+4 0

A:

Q: 1x-3=23

A: Given 1x - 3 = 23

Q: - 1/2x - 3 = - 9

A: SOLUTION-

Q: 3y = -x+6 %3D 2x + 4y = 12

A:

Q: Divide x? + 2x – 15 by x + 5.

A:

Q: -2x + 4 = 7

A:

Q: 2x-3=11

A:

Q: X+15 =200 5x +7==17

A:

Q: -3+9x=12

A:

Q: 7x + 8y = 67  3x + 6y = 39

A: Solving system of equations means finding the value of the variable involved into the equation.

Q: How did you find A=250

A:

Q: Solve the equation -7x-17 = -38 for x. • Write your answer as a number only. • Round your answer to…

A:

Q: -7=2r+1

A: Given,     -7 = 2r + 1         ⇒  2r = -7 -1         ⇒   2r = -8        ⇒     r =  -82

Q: There are m male students in the Business Maths class. This is 35 more than four times the number of…

A:

Q: 8-2x=30

A: Given Equation:- 8-2x=30

Q: Evaluate 2s+3 L-1 s²+4s+10)

A: This question is related to Laplace equation.

Q: 2x + 1 = 98

A: Given 2x+1 = 98

Q: property is 6x=60

A: Given query is to find the value of x.

Q: Evaluate 4a + b - 12 when a = - 1 and b = 2.5

A: See the solution below:

Q: 11

A:

Q: 14 9

A: Solution-

Q: Find t 7t - 5 = 16

A: Given, 7t -5 = 16  We have to find the value of t.

Q: Sachin bought n notebooks, each of which cost c dollars. Represent in dollars the change be received…

A: Sachin bought n notebooks, each of which cost c dollars. Represent in dollars the change be received…

Q: Find x A 5 810 B. X. 12 C. E.

A:

Q: plus one

A: Answer-We have to find the sum of one and one.

Q: x2=16

A: x2=16