Fill in prepositions of place in, on, at. (Вставь предлоги места in, on, at.)

1. Don’t sit
the grass. It’s wet.
2. Sam lives Paris.
3. Did you hear the doorbell? There is somebody the door.
4. I had to wait for an hour the bus stop!

Question

Математика: Fill in prepositions of place in, on, at. (Вставь предлоги места in, on, at.) 1. Don’t sit the grass. It’s wet. 2. Sam lives Paris. 3. Did you hear the doorbell? There is somebody the door. 4. I had to wait for an hour the bus stop!

ЛизаБугакова · Accepted Answer

1) (780-m*60)/6=70

780-60m=70*6

780-60m=420

60m=780-420

60m=360

m=360:60

m=6

(780-6*60)/6=70

70=70

ответ: m=6.

2) 640/(х*98)=8

98х=640:8

98х=80

х=80:98

х=40/49

640/((40/49)*98)=8

8=8

ответ: х=40/49.

Если опечатка и условие такое: 640/(х*9+8)=8, то решение будет следующим:

9х+8=640:8

9х+8=80

9х=80-8

9х=72

х=72:9

х=8

640/(8*9+8)=8

8=8

ответ:х=8.

3)Здесь тоже опечатка, не хватает знака "+"

250+9*a=520

9а=520-250

9а=270

а=270:9

а=30

250+9*30=520

520=520

ответ: а=30.

4) 400/t-32=48

400/t=48+32

400/t=80

t=400:80

t=5

400/5-32=48

48=48

ответ: t=5.

Fill in prepositions of place in, on, at. (Вставь предлоги места in, on, at.) 1. Don’t sit the grass. It’s wet. 2. Sam lives Paris. 3. Did you hear the doorbell? There is somebody the door. 4. I had to wait for an hour the bus stop!

MOGZ ответил

Fill in prepositions of place in, on, at. (Вставь предлоги места in, on, at.)

1. Don’t sit
the grass. It’s wet.
2. Sam lives Paris.
3. Did you hear the doorbell? There is somebody the door.
4. I had to wait for an hour the bus stop!