a.

1 note of 10 reais

b.

3 notes of 2 reais

c.

3 notes of 5 reais

d.

1 note of 2 reais and 1 note of 5 reais

Answer sheet:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur id consequat justo. Cras pellentesque urna ante, eget gravida quam pretium ut. Praesent aliquam nibh faucibus ligula placerat, eget pulvinar velit gravida. Nam sollicitudin pretium elit a feugiat. Vestibulum pharetra, sem quis tempor volutpat, magna diam tincidunt enim, in ullamcorper tellus nibh vitae turpis. In egestas convallis ultrices. Sed non sem ultricies, sollicitudin sem facilisis, commodo justo. Maecenas mattis sodales nunc, et auctor massa fermentum a. Maecenas eget nisl felis.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur id consequat justo. Cras pellentesque urna ante, eget gravida quam pretium ut. Praesent aliquam nibh faucibus ligula placerat, eget pulvinar velit gravida. Nam sollicitudin pretium elit a feugiat. Vestibulum pharetra, sem quis tempor volutpat, magna diam tincidunt enim, in ullamcorper tellus nibh vitae turpis. In egestas convallis ultrices.

Answer sheet

You need to be a registered teacher to view the answer sheet

IARA TIP

Are you putting together a test or exercise list?

On Teachy’s platform, you can automatically generate these materials without spending hours searching for questions 😉

Those who viewed this question also liked...

Question

Question

Difficulty Medium

Source:

UEMG

In a school presentation, eight friends, including Carlos, Timóteo, and Joana, line up. Calculate the number of different ways this line of friends can be formed so that Carlos, Timóteo, and Joana always stay together:

Combinatorial Analysis: Simple Permutation

Difficulty Medium

Question

Question

Difficulty Easy

Source:

Teachy

A store offers a 20% discount on all products, and a second 10% discount for cash payments. What is the final price of a product that cost R$100.00 and was bought in cash?

Percentage: Successive Percentages

Difficulty Easy

Question

Question

Difficulty Medium

Source:

Teachy

João is building a fence for his garden. He decided to make the fence in the shape of a rectangle and already knows that the height is 4 meters and the base is 7 meters. Help João calculate the perimeter of the fence. What is the perimeter of João's garden fence?

Perimeter

Difficulty Medium

Question

Question

Difficulty Hard

Source:

Teachy

During the cleaning of the cooling system of a factory, a technician must adjust a light reflector fixed on the ceiling of the room. The reflector has the shape of a right circular cone with the vertex pointing upwards and an opening angle of 75º. The technician wants to calculate the height and the radius of the base of the cone to determine the ideal dimensions of the mirrors that will be installed on the inner surface of the cone, so that the reflected light follows a beam parallel to the floor. Consider that the angle of incidence of light on the inner surface of the cone should be 15º with the normal to the surface at the point of incidence to ensure total reflection of light. Based on this configuration, determine the height and the radius of the base of the cone, and additionally, identify the value of the sine and cosine of 22.5º, an angle that arises in the resolution of the problem.

Trigonometric Lines of 75º, 15º, 22.5º

Difficulty Hard

Join a community of teachers directly on WhatsApp

Connect with other teachers, receive and share materials, tips, training, and much more!

2023 - All rights reserved