Предмет: Алгебра, автор: anohinat2012

Сумма двух чисел равна 12. Если одно число увеличить в 2 раза, а другое оставить без изменения, то в сумме эти числа дадут 16.
Найди исходные числа.

Ответы

Автор ответа: 6pp
0
8 и 4 если 4 в 2 раза увеличить будет 8 а 8 + 8 = 16

Автор ответа: Лезгин2308
0
{х+у=12
2х+у=16
(2х+у)-(х+у)=16-12=4
х=4
у=12-4=8
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Tasks for the Summative Assessment for Term 3
Task 1
Reading
Ana: Hey, Michael. I heard your mom is a zoologist. What is it exactly?
Mike: A zoologist. Well, that's true. She is a zoologist. So a zoologist is someone who studies animals.
Ana: Oh, interesting. So does she study all animals or does she focus on a specific animal?
Mike: Well, she's worked at universities studying animals for a long time. So she's worked on many different kinds of animals. But at the moment, she is studying South African tortoises.
Ana: Oh, interesting. Do you have any tortoises in your house?
Mike: Yeah. Actually, we have more than 40 tortoises in our garden.
Ana: More than 40. Wow.
Mike: Yes. People are always very surprised when they visit and they see all our tortoises.
Ana: So, do you know a lot about tortoises as well?
Mike: I don't know very much about them but I mean, my mom has always got them around at the house or she's often busy with some sort of tortoise's related activity. And so sometimes, as a high school kid, I got home and she would have a tortoise. It is a pregnant tortoise, a female tortoise with eggs inside. And in order to monitor these eggs, she would have it in a bath of water with an ultrasound scanner and a screen up on the dining room table.
Ana: Wow. That is really interesting.
Mike: I had a very interesting childhood with all of these animals and things around the house.
Ana: Oh, that's great. Did you have any other pets?
Mike: Yes. We've always had a couple of dogs and I like cats. So I've got my pet cat at home.
Ana: Wow. That's really interesting.

Answer the questions about the interview.


1. He has many tortoises in _____.
A) his flat
B) his house
C) the garden

2. His mom took care of _____ tortoise.
A) an injured
B) a dangerous
C) a pregnant

3. She took care of it when he was _____.
A) a child
B) in high school
C) in college

4. She watched it _____.
A) in the wild
B) in the kitchen
C) in a lab



5. At his house they have _____.
A) other wild animals
B) a few horses
C) common pets
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