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2 years ago

Solve the system. And explain please cause I have 4 more

Mathematics

1 answer:

Nady [450]2 years ago

6 0

Answer:

Wong was conducting a field study in the Amazon rainforest when he

discovered a prokaryotic organism that has a cell wall and circular

chromosomes. Which of the

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Pls answer with real answers only thank you

aev [14]

Answer: 32.35 cm^2

Step by step:

Find the area of the rectangle first.

A= L • W
A= 11 • 4.2
A= 46.2 cm^2

Then find the area of the circle. The formula is A= pi (r)^2. The diameter of the circle is 4.2 cm because looking at the width of the rectangle it fits into the circle as well.

Half of the diameter is 2.1 cm which is the radius.

A= pi (r)^2
A= pi (2.1)^2
A= pi (4.41)
A= 13.85 cm^2

Then you would subtract 13.85 from 46.2 to find the shaded portion.

Hope this helps :))

4 0

3 years ago

Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

denis23 [38]

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

Step-by-step explanation:

The perfect-square trinomial x² + 2ax + a² = (x + a)², then

1. The first term in the trinomial is square the 1st term in the bracket

2. The middle term in the trinomial is the product of 1st , 2nd

terms of the bracket and 2

3. The 3rd term in the trinomial is square the 2nd term in the bracket

∵ The expression is x² + 12x

∵ We must add the 3rd term which make it perfect-square trinomial

- Divide 12x by 2 to find the product of the 1st term and 2nd term

in the bracket

∵ 12x ÷ 2 = 6x

∴ The 1st term is x and the 2nd term is 6 of the bracket

∵ The 3rd term in the trinomial is square the 2nd term in the bracket

∴ The 3rd term in the trinomial is 6² = 36

∴ x² + 12x + 36 = (x + 6)²

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

Learn more:

You can learn more about perfect-square trinomial in brainly.com/question/7932185

#LearnwithBrainly

4 0

3 years ago

Whoever has the best answer gets the brainliest answer!:)

Korvikt [17]

Since the length is 10 in. You must multiply it by $\frac{1}{5}$ and then multiply by $\frac{1}{2}$ . The reason for this is because if you divide ten by 5 it will be 2, then if you divide 2 by 2 it will be 1.

4 0

3 years ago

A secretary’s hourly wage is $21. On Sunday, the secretary earns time and a half. How much does the secretary earn for working e

AVprozaik [17]

She earns twenty one dollars a hour regularly half of that is ten dollars and fifty cents . Add this to twenty one equals thirty one fifty a hour times eight equals two hundred and fifty two dollars for working on Sunday for eight hours .

6 0

3 years ago

How many solutions does 3.5y - 12 = 1.5(y - 2) have?

Anastasy [175]

3.5y - 12 = 1.5(y - 2)

First, expand to remove parentheses.
$3.5y - 12 = 1.5y - 3$
Second, add '12' to both sides.
$3.5y = 1.5y - 3 + 12$
Third, simplify '-3 + 12' to get '9'.
$3.5y = 1.5y + 9$
Fourth, subtract '1.5y' from both sides.
$3.5y - 1.5y = 9$
Fifth, subtract '3.5y - 1.5y' to get '2y'.
$2y = 9$
Sixth, divide both sides by '2'.
$y = \frac{9}{2}$

Answer: 1 solution
Answer as fraction: $\frac{9}{2}$
Answer as decimal: $4.5$

6 0

3 years ago