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GREYUIT [131]
2 years ago
9

In a class of 20 ​students, on​ average, 4 will be​ left-handed. If a class includes 14 ​"lefties", estimate how many students a

re in the class.
Mathematics
2 answers:
bixtya [17]2 years ago
5 0

For this case, we must indicate how many students there are in the class knowing that it includes 14 "lefties". For this, we make a rule of three:

20 -------------> 4

x ---------------> 14

Where the variable "x" the number of students in the class.

x = \frac {14 * 20} {4}\\x = \frac {280} {4}\\x = 70

Thus, if the class includes 14 left-handers, then according to the base average, the class will have a total of 70 students.

Answer:

70 students


Vlada [557]2 years ago
3 0

Answer:

  70

Step-by-step explanation:

The number in the class is 20/4 = 5 times the number of "lefties."

  5 · 14 = 70

The class is estimated to have 70 students.

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A store receives tomatoes in boxes of 40 tomatoes each. About 4 tomatoes per box cannot be sold due to damage. Write an algebrai
monitta

Answer:

40b - 4b    or 36 b

Step-by-step explanation:

No. of tomatoes in each box = 40

No. of box shipped = b

No. of tomatoes in those b box = b*No. of tomatoes in each box = 40b

No. of tomatoes damaged in each box = 4

No. of box shipped = b

No. of tomatoes damaged in those b box = b*No. of tomatoes damaged in each box = 4b

Thus, total no. of tomatoes that can be sold by store = No. of tomatoes in those b box - No. of tomatoes damaged in those b box  = 40b - 4b

Algebraic expression to express the no. of tomatoes that can be sold from those b box is

40b - 4b = 4b(10-1) = 4b(9) = 36b (Answer)

3 0
3 years ago
What is the answer to 6x^2+17x+12=0 pls help me and I will help you back
Rina8888 [55]

Answer:

x=−4/3 or x=−3/2

Step-by-step explanation:

Let's solve your equation step-by-step.

6x2+17x+12=0

Step 1: Factor left side of equation.

(3x+4)(2x+3)=0

Step 2: Set factors equal to 0.

3x+4=0 or 2x+3=0

x=−4/3 or x=−3/2

4 0
3 years ago
A farmer wants to transport 100 cows to another farm. Each truck can carry 7cows. He has 10 trucks . How many more trucks does h
kicyunya [14]

Answer:

3 more trucks

Step-by-step explanation:

7 cows a truck and 10 trucks equals 70 cows carried. 30 more cows/10 per truck equals 3 more trucks.

7 0
3 years ago
Read 2 more answers
3w-4z=8<br> 2w+3z=-6 solve
marissa [1.9K]

Answer:

W = 0

Z = -2

Step-by-step explanation:

While simplyfying the equation, i noticed that one is 24 and the other is -24, which meant that one value is non existent, and after i found out that w = 0 imputing the reslut made that easier

4 0
2 years ago
Please help ASAP I am in desperate need
Vlad1618 [11]

Answer:

x = 9

TH = 12

Step-by-step explanation:

since TM is half of HM, the equation is:

2(21 - x) = 3x - 3

42 - 2x = 3x - 3

45 = 5x

x = 9

TH = 21 - x

TH = 21 - 9

TH = 12

8 0
2 years ago
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