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kakasveta [241]
3 years ago
7

Mara si familia ei au economisit bani pentru cumparaturi.Cu o treime din suma au cumparat o tricicleta, cu o treime din rest in

sevalet iar cu 400 o bicicleta. Cit a cotat fiecare obiect?
Mathematics
1 answer:
DochEvi [55]3 years ago
7 0

Answer:

1200

Step-by-step explanation:

Faceti o ecuatie pentru a o rezolva mai usor:

Intrebarea spune ca o treime a fost pentru un tricicleta si o a treia pentru o bicicleta, deci acestea sunt aceeasi valoare. Y este totalul.

    x + x + 400 = y

Exista trei parți ale ecuației și intrebarea spune ca doua treimi sunt utilizari pe bicicleta și tricicleta. Trebuie sa ramana o treime, deci pe a treia (x) trebuie sa fie aceeași cu 400.

Faceți o noua ecuație:

400 + 400 + 400 = ?

Adaugați numerele pentru a obține raspunsul: 1200

Scuze pentru gramatica, nu scriu bine in aceasta limba.

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PC-CSIL
pav-90 [236]

The equality used is Subtraction property of equality

Option A is correct

Step-by-step explanation:

We need to identify which option best explains or justifies Step 1.

Step 1 is: -c = ax^2 + bx

The given equation is: 0 = ax^2 + bx + c

To get the equation for step 1 we need to subtract c on both sides of equation i.e using subtraction property of equality

0-c = ax^2 + bx + c-c

-c = ax^2 + bx

So, The equality used is Subtraction property of equality

Option A is correct.

Keywords: Solving Quadratic Equations

Learn more about Solving Quadratic Equations at:

  • brainly.com/question/4460262
  • brainly.com/question/7361044
  • brainly.com/question/1414350

#learnwithBrainly

5 0
3 years ago
Please don't delete my question! Here they are:
Alinara [238K]

Answer:

1. 14/15

2. 5 7/8

3. 81.25%

Step-by-step explanation:

1. (fraction) 7/9 divided by 5/6 (fraction)

7/9 ÷ 5/6 =

= 7/9 * 6/5

= (7 * 6)/(9 * 5)

= 42/45

= 14/15

2.

1 3/8 + 4 1/2 =

= 1 + 3/8 + 4 + 1/2

= 1 + 4 + 3/8 + 4/8

= 5 + 7/8

= 5 7/8

3.

percent = part divide by whole times 100

13/16 * 100 =

= 81.25%

4 0
4 years ago
Read 2 more answers
Isip at kilos loob ng<br> paaralan​
Afina-wow [57]
Lol I actually laughed at this silly much ?
7 0
4 years ago
Endeye needs to split 1/5 of the dinner left over from last week to feed her 3 siblings. What fraction of the original dinner wi
aleksandr82 [10.1K]

Answer:

<u><em>They each had </em></u><u><em>1/20 of the original meal</em></u>

Step-by-step explanation:

<u><em>To begin, </em></u><u><em>there are 4 people</em></u><u><em>. Her siblings, and herself. She is </em></u><u><em>splitting the 1/5 leftover</em></u><u><em> to feed them. To do this, we simply </em></u><u><em>take 1/5 and put it into a fraction to get 0.2</em></u><u><em>. Next, we can </em></u><u><em>put 0.2 / 4 into a calculator</em></u><u><em> to get how much each person can get.</em></u>

<u><em>0.2 / 4 = 0.05.</em></u>

<u><em>Now, we need to </em></u><u><em>turn it into a fraction</em></u><u><em> to find out how much they had in fraction form of the original.</em></u>

<u><em>0.05 = 1/20</em></u>

<u><em>They each had </em></u><u><em>1/20 of the original meal</em></u>

3 0
2 years ago
Lins father is paying for a $20 meal. He has a%15 off coupon for the meal. After the discount, a 7% sales tax is applied. What d
Bas_tet [7]

Answer:

he pays $18.19 hope this helps have a nice day please give me brainliest

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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