Предмет: Математика, автор: sofica85

две черепахи ползут в одном направлении. сейчас расстояние между ними 30 см. Та что впереди, проползает в минуту 125 см, а вторая - 85 см в минуту. Какое расстояние будет между ними через 15 минут? Ответ выразить в метрах и сантиметрах.
Задачу решить по плану:
1) какое расстояние проползла за 15 минут первая черепаха?
2) какое расстояние проползла за 15 минут вторая черепаха?
3) На сколько больше сантиметров проползла первая черепаха, чем вторая?
4) чему будет равно расстояние между черепахами через 15 минут?

Ответы

Автор ответа: Lancer2005
0
125×15=1875см проползла 1 черепаха 1м 875см
85×15=1275см проползла 2 черепаха 1м 275см
1875-1275=600см на  столько больше проползла первая чер 
т.к. до старта расстояние между черепахами было 30см,то
600+30=630см будет между черепахами через 15мин
Интересные вопросы
Предмет: Английский язык, автор: Artkisa2
Помогите ответь на 30 вопросов 1Find the right variant
a) favourite
b) favorit
c) fauvorite
d) faivvoretu
e) faouvute
@
2Put the correct article
My brother is … engineer, he is … good engineer.
an/ a
the /the
an / the
the /an
an/ an
@
3Find the antonym
Cheaper – …Better – …
More expensive, worse
Expensive, bad
Slower, longer
Faster, stronger
@
4Find the correct numeral
I’ll let you have it for a…tenge.
a) hundreds
b)hundredth
c)the hundreds
d)hundred
e)the hundred
@
5Find the numeral
a)become
b)twenty
c)western
d)agriculture
e)much
@
6.Put the correct verb
Your money…in your bag ten minutes ago.
a)was
b)are
c)is
d)am
e)were
@
7.Put the correct preposition
Here are the books we’ve just looked…
a)in
b)by
c)for
d)forward
e)at
@
8.Complete the sentence
The woman…lives next door is a doctor
a)who
b)those
c)where
d)this
e)what
@
9.Choose the correct pronoun
She burnt…cooking dinner.
a)she
b)herselves
c)hers
d)himself
e)herself
@
10.Make an adjective from noun«Fame».
a)famous
b)famonive
c)famouric
d)famonic
e)famolly
@
11.Put the correct verb
She…tennis at 5o’clock yesterday.
a)was playing
b)have been playing
c)is playing
d)has played
e)played
@
12.Find the antonym of the word:“Dark”
a)white
b)red
c)black
d)light
e)green
@
13.Put the correct article
What time do you go to…bed?
a)-
b)they
c)A
d)the
e)an
@
14.Find the antonym to given words: Come…Open…
a)turn, write
b)read, to be
c)take, wear
d)go, close
e)arrive, play
@
15.Put the correct indefinite pronoun
Have you got…new books?
a)no
b)anything
c)none
d)something
e)any
@
16.Choose the correct ordinal numeral:“the 35th”
a) the thirty five
b)the thirty and fifth
c)the thirtieth fifth
d)the thirty and fiveth
e) the thirty fifth
@
17.Choose the correct variant
I…her a new book for her birthday.
a)am going to give to
b)would given
c)is going to give
d)has given
e)are going to give
@
18.Put the correct verb
We…foball after school yesterday.
a)played
b)will play
c)would play
d)plays
e)play



@
19.Complete the sentence:
I don’t like stories…have unhappy ending.
a)who
b)that
c)whose
d)where
e)when
@
20.Choose the correct preposition
My little son is good…playing computer games.
a)from
b)for
c)at
d)in
e)by
@
21.Find the verb
a)begin
b)fifty
c)action
d)nearly
e)cultural
@
22.Superlative form of the word: «large»
a)the largest
b)larder
c)the larger
d)more largest
e)the most larger
@
23.Plural form of the word :“A knife”.
a)knifs
b)kniveses
c)knifes
d)knifses
e)knives
@
24.Find the numeral
a)nineteen
b)badly
c)read
d)beauty
e)shiny
@
25.Put the correct pronoun.
Which book shall I give you?…...you like.
a)none
b)no
c)anything
d)any
e)something
@
26.Put the correct article
London stands on ...Thames.
a)a
b)on
c)the
d)ai
e)an
@
27.Antonym of the word “Right”
a)correct
b)full
c)complete
d)wrong
e)mistake
@
28.Find the singular noun
a)notebook
b)pens
c)bags
d)books
e)games
@
29.Comparative form of adjective «Big»
a)biggest
b)bigest
c)biger
d)bigger
e)more big
@
30.Find the correct answer
Twenty five plus thirty nine is …
a)sixty four
b)eighty
c)seventy two
d)fifty
e)twenty nine
Предмет: Физика, автор: Щим
Предмет: Химия, автор: Аноним