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Тест по математике для 8 класса на тему "Площадь треугольника и ромба"
Вопрос 1:
Найдите площадь треугольника, если его основание равно 10 см, а высота — 5 см. Запишите формулу для расчета.
Вопрос 2:
Какова площадь ромба, если длина его стороны равна 6 см, а одна из диагоналей — 8 см? Запишите формулу для расчета площади.
Вопрос 3:
Треугольник имеет стороны 6 см, 8 см и 10 см. Используя формулу Герона, найдите его площадь. Запишите все шаги расчета.
Вопрос 4:
Ромб с диагоналями 12 см и 16 см. Какова его площадь? Укажите, какую формулу вы использовали для расчета.
Вопрос 5:
Если площадь треугольника равна 30 см², а основание равно 12 см, найдите высоту треугольника. Напишите решение.
Пожалуйста, сохраните этот тест и используйте для проверки знаний учеников!
Вот тест по грамматике английского языка для уровня B1, состоящий из 40 вопросов с вариантами ответа. Ответы указаны в конце.
Which sentence is correct?
a) She don't like apples.
b) She doesn't likes apples.
c) She doesn't like apples.
d) She didn't liked apples.
Choose the correct form of the verb:
If he ___ harder, he would pass the exam.
a) studies
b) studied
c) had studied
d) has studied
Which sentence is correct?
a) I have seen that movie yesterday.
b) I saw that movie yesterday.
c) I seen that movie yesterday.
d) I have saw that movie yesterday.
Choose the correct preposition:
She is interested ___ learning Spanish.
a) of
b) in
c) on
d) for
Which option best completes the sentence?
I wish I ___ a car.
a) have
b) had
c) has
d) having
Choose the correct past form:
They ___ to the beach last summer.
a) go
b) gone
c) went
d) go to
Which sentence is correct?
a) There is many people in the park.
b) There are many people in the park.
c) There is a lot of peoples in the park.
d) There are a lot of person in the park.
Fill in the blank:
I don’t understand ___ he is saying.
a) what
b) which
c) where
d) when
Choose the right word:
She is the ___ student in the class.
a) more intelligent
b) most intelligent
c) intelligenter
d) intelligentest
Which option best completes the sentence?
If it ___ tomorrow, we will stay home.
a) rains
b) rain
c) rained
d) will rain
Choose the correct form:
He suggested that she ___ a new dress for the party.
a) buy
b) buys
c) buying
d) bought
Which sentence is correct?
a) I have been to Paris last year.
b) I went to Paris last year.
c) I have gone to Paris last year.
d) I am going to Paris last year.
Choose the correct form:
She said she ___ go to the party.
a) won't
b) doesn't
c) didn't
d) isn't
Fill in the blank:
By this time next year, I ___ my exams.
a) will have taken
b) will take
c) took
d) take
Which option is correct?
He asked me ___ I wanted to join him.
a) if
b) that
c) when
d) what
Choose the correct form:
Neither the teacher nor the students ___ aware of the changes.
a) was
b) were
c) are
d) is
Which sentence is correct?
a) She is more smarter than her brother.
b) She is smarter than her brother.
c) She is smart than her brother.
d) She is the most smartest than her brother.
Fill in the blank with the correct word:
I didn't notice the time; I was lost in my ___.
a) thinking
b) thought
c) thoughts
d) think
Choose the correct option:
I can't believe she ___ that!
a) said
b) say
c) saying
d) says
Complete the sentence:
He is good ___ playing the piano.
a) in
b) at
c) for
d) with
Which sentence is correct?
a) I usually don't go to bed late.
b) I don't usually go to bed late.
c) I didn't usually go to bed late.
d) I won't usually go to bed late.
Choose the correct question:
Where ___ you go last night?
a) did
b) do
c) are
d) gone
Fill in the blank:
He has been working here ___ five years.
a) for
b) since
c) during
d) at
Choose the correct response:
What would you do if you ___ a million dollars?
a) have
b) had
c) will have
d) has
Which sentence is correct?
a) I will go to the store tomorrow.
b) I going to the store tomorrow.
c) I goes to the store tomorrow.
d) I am going to store tomorrow.
Fill in the correct word:
She plays tennis ___ two hours every week.
a) since
b) for
c) during
d) about
Choose the correct form:
He said he ___ to help me.
a) will
b) would
c) can
d) could
Which option is correct?
The book ___ on the table is mine.
a) lying
b) lays
c) lied
d) lie
Choose the right word:
He is capable ___ doing much better than this.
a) for
b) in
c) of
d) at
Fill in the blank:
If you had told me, I ___ have helped you.
a) would
b) will
c) should
d) could
Which sentence is correct?
a) I prefer tea than coffee.
b) I prefer tea over coffee.
c) I prefer tea to coffee.
d) I prefer tea like coffee.
Choose the correct form:
She enjoys ___ to music in her free time.
a) listen
b) listening
c) listens
d) listened
Which option best completes the sentence?
He didn't have ___ money to buy the car.
a) enough
b) too
c) many
d) much
Fill in the blank:
If you see Maria, please let her ___ that I'm looking for her.
a) know
b) to know
c) knowing
d) known
Choose the correct option:
They told me ___ the truth.
a) tell
b) telling
c) to tell
d) tells
Which sentence is correct?
a) There is a lot of furniture in this room.
b) There are a lot of furniture in this room.
c) There is many furniture in this room.
d) There are much furniture in this room.
Fill in the blank with the correct word:
He was born ___ June 12th, 2000.
a) in
b) on
c) at
d) for
Choose the correct verb form:
She has never ___ to Italy before.
a) go
b) gone
c) went
d) going
Which option is correct?
He found the book ___ he was looking for.
a) when
b) that
c) where
d) what
Fill in the blank:
We had to wait ___ the rain to stop before leaving.
a) until
b) for
c) during
d) since
Этот тест охватывает различные аспекты грамматики на уровне B1 и поможет школьникам подготовиться к экзаменам.
Вот тест по обществознанию на тему "Безработица" для 8 класса с типом вопросов "Соотнесение".
Инструкция: Соотнесите термины в колонке А с их определениями в колонке Б.
| Колонка А | Колонка Б |
|---|---|
| 1. Безработица | А. Ситуация, когда работник теряет работу |
| 2. Структурная безработица | Б. Общее количество людей, не имеющих работы |
| 3. Фрикционная безработица | В. Процесс, при котором некоторые профессии становятся ненужными |
| 4. Циклическая безработица | Г. Временная безработица, вызванная переходом между работами |
| 5. Уровень безработицы | Д. Безработица, вызванная экономическими пертурбациями |
| 6. Молодежная безработица | Е. Безработица среди людей определенной возрастной группы |
| Номер вопроса | Правильный ответ |
|---|---|
| 1 | Б |
| 2 | В |
| 3 | Г |
| 4 | Д |
| 5 | А |
| 6 | Е |
Обратите внимание на то, что соотнесение терминов с их определениями поможет лучше понять различные аспекты безработицы. Удачи на экзамене!
Выберите верные утверждения о формуле Бернулли \(P_n(k)=C_n^k p^k q^{\,n-k}\).
A. \(q=1-p\).
B. \(C_n^k\) показывает число способов расположить \(k\) наступлений события среди \(n\) испытаний.
C. Формулу можно применять, если вероятность наступления события различается в каждом испытании.
D. \(P_n(k)\) — вероятность того, что событие наступит ровно \(k\) раз в \(n\) испытаниях.
В каждом из пяти независимых испытаний событие наступает с вероятностью \(0{,}4\). Выберите выражения, равные вероятности того, что событие наступит ровно два раза.
A. \(P_5(2)=C_5^2(0{,}4)^2(0{,}6)^3\)
B. \(P_5(2)=0{,}3456\)
C. \(P_5(2)=C_5^3(0{,}4)^3(0{,}6)^2\)
D. \(P_5(2)=(0{,}4)^2(0{,}6)^3\)
В четырёх независимых испытаниях вероятность наступления события равна \(0{,}7\). Выберите верные выражения для вероятности того, что событие наступит ровно три раза.
A. \(P_4(3)=C_4^3(0{,}7)^3(0{,}3)\)
B. \(P_4(3)=0{,}4116\)
C. \(P_4(3)=C_4^1(0{,}7)(0{,}3)^3\)
D. \(P_4(3)=(0{,}7)^3(0{,}3)\)
В каждой из шести независимых попыток вероятность успеха равна \(0{,}2\). Выберите верные выражения для вероятности ровно одного успеха.
A. \(P_6(1)=C_6^1(0{,}2)^1(0{,}8)^5\)
B. \(P_6(1)=0{,}393216\)
C. \(P_6(1)=1-(0{,}8)^6\)
D. \(P_6(1)=C_6^5(0{,}2)^5(0{,}8)\)
В двух независимых испытаниях вероятность наступления события равна \(p\). Вероятность того, что событие наступит ровно один раз, равна \(0{,}48\). Выберите все возможные значения \(p\).
A. \(0{,}4\)
B. \(0{,}6\)
C. \(0{,}2\)
D. \(0{,}8\)
1 — A, B, D
2 — A, B
3 — A, B
4 — A, B
5 — A, B