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3 years ago

Unit 3 homework 1 answers

Mathematics

1 answer:

jenyasd209 [6]3 years ago

8 0

Okay and what is the question that you wanted to be answered

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Yara multiplies and divides a certain number by the same

Butoxors [25]

For this case we have to:

x: Represents the unknown number

y: Represents the exponent of base 10

So, considering a system of equations we have:

$x * 10 ^ y = 40,000\\\frac {x} {10 ^ y} = 0.000004$

From the first equation we have:

$10 ^ y = \frac {40,000} {x}$

Substituting in the second equation:

$\frac {x} {\frac {40,000} {x}} = 0.000004\\\frac {x ^ 2} {40,000} = 0.000004\\x ^ 2 = 40,000 * 0.000004\\x ^ 2 = 0.16\\x = \pm \sqrt {0.16}$

We choose the positive value:

$x = 0.4$

So, the number is 0.4.

So:

$10 ^ y = \frac {40,000} {0.4}\\10 ^ y = 100,000\\y = 5$

Thus, the exponent is 5.

Answer:

Yara use 0.4 and $10 ^ 5$

8 0

3 years ago

1. Oblicz:

dem82 [27]

Step-by-step explanation:

1. Oblicz:

a) Liczbę o 15% mniejszą od 60

b) Liczbę, której 15% stanowi 60

c) Jakim procentem 60 jest 15

d) O ile %większa jest 60 od 15

2. Kasia kupiła buty na wyprzedaży przecenione o 20%. Ich cena początkowa to 180 zł. W domu sprzedała je siostrze zarabiając na tym 10% wartości. Ile zapłaciła Kasi siostra za buty?

3. Liczba, którą powiększymy o 20% daje nam 30. Jaka to była liczba?

4. Za dwie książki zapłacono 42 zł. Ile kosztuje droższa z nich, jeżeli jedna jest o 25 % tańsza od drugiej?

5 0

2 years ago

Given Brainly to who ever help

muminat

Perimeter: 26
Area: 32

Let me know if you need me to explain in depth!!

3 0

2 years ago

Which equation demonstrates the additive identity property?

Ira Lisetskai [31]

The additive identity property states that for every number a, you have

$a+0=a$

You're showing this property when you write

$(7+4i)+0=7+4i$

8 0

3 years ago

Some students equally share 2 baskets of apples. Each basket has 12 apples. Write an algebraic expression to represent this situ

Soloha48 [4]

Answer:

$y = \frac{24}{x}$ is the algebraic expression to represent the situation.

Step-by-step explanation:

Given:

Some students equally share 2 baskets of apples.

Each basket has 12 apples.

To Find:

An algebraic expression to represent the situation = ?

Solution:

Let the number of students be x

The number of apple each one gets be y

then it is said that there are 12 apples in one basket.

So in two basket there will be

=> $2 \times 12$

=> 24 apples

This 24 apples is to be shared among x students, so

Each student will get

$y = \frac{24}{x}$

4 0

3 years ago