Proportion
Fraction
Equation
Geometry
probability
100
what is the answer of the proportion? 
x = 15
100
Carolina had R $ 175,00. Spent 1/7 of 1/5 of that amount. How much?
r$170.00
100
Resolva a equação z + 2z - 3 = 4 (z - 1).
z = 1
100
We have an equilateral triangle of side 6cm. What is the perimeter and what is the area of this triangle?
Perimeter: 6*3 = 18cm
Area:
100
On a gameboard spinner, Martin won a prize on 10 out of 15 spins. What is the experimental probability that the next spin will yield a prize?
2/3
200
What's the answer?
.
a = 55 - 35 = 20
200
If 7/8 of a lot is worth R $ 21,000.00, what is the value of 5/48 of the same lot?
R$ 2,500.00
200
solve: 23x - 16 = 14 - 17x
x = 30/40 = 3/4
200
A trapeze has the smallest base equal to 2, the largest base equal to 3 and the height equal to 10. What is the area of this trapeze?
|
200
Of the 14 people who have signed up for a genetics lecture, 7 have green eyes. What is the experimental probability that the next person to sign up will have green eyes?
1/2
300
The sum of the age of the father and the son is 45 years. The age of the father is for the age of the son, as well as 7 is for 2. Determine the age of the father and the son.
The father's age is 35 years.
300
Thomas had R$ 375,00. You spent 2/5, minus R $ 6.00; then a third of the rest plus R $ 18.00. How much?
R$ 136.00
300
solve: 10y - 5 (1 + y) = 3 (2y - 2) - 20
y = 21
300
Knowing that the area of a square is 36cm², what is its perimeter?
Let's find out the side of the square:
x*x = 36
x = 
x = 6
So its perimeter is 6 * 4 = 24cm.
300
Alexa runs a stable that boards 15 horses, and 6 of them are white. What is the experimental probability that the next horse that comes to board will be white?
2/5
400
solve: 
x = 15
400
A number is 8/5 of a second or 2/3 of a third. Calculate the three numbers knowing that their sum is equal to 500.
18 apples
400
solve: 4x (x + 6) - x2 = 5x2
-2x² = -24x
400
Calculate the area and perimeter (in meters) of the rectangles described:
a) a = 25 and b = 12
b) a = 14 and b = 10
Area:
25*12 = 300m²
Perimeter:
25 + 25 + 12 + 12 = 74m
Answer b:
Area:
14*10 = 140m²
Perimeter:
14 + 14 + 10 + 10 = 48m
400
There are 15 children in Cindy's preschool class. During free time yesterday, 5 of them chose to do puzzles. What is the experimental probability that a randomly selected preschooler would choose to do puzzles today?
1/3
500
solve: .jpg)
x = 5
500
Claudia did 2/9 of a job in 12 hours and Mariana, 4/7 of the rest in 8 hours. How many hours will it take to do the same work, if they work together?
13 h 30 min
500
solve: (x - 5)/10 + (1 - 2x)/5 = (3-x)/4
x = -21
500
What is geometry?...
Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. A mathematician who works in the field of geometry is called a geometer.
500
Sidney's Cupcakes recently sold 20 cupcakes, of which 6 were red velvet cupcakes. What is the experimental probability that the next cupcake sold will be a red velvet cupcake?
3/10