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4 years ago

2x+6y=-12 -2x-4y=12 ________

Mathematics

1 answer:

algol134 years ago

3 0

Answer:

y=6

Step-by-step explanation:

-2y=12

-y=6

y=6

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Martin is building a rectangular fire pit in his backyard. He dug a hole 30 inches by 30 inches. He decides to make each side of

xz_007 [3.2K]

Answer:

30.55% increase

Step-by-step explanation:

Hope this helps!

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4 years ago

-4 = 10 + n/2 please i will give brainliest

n200080 [17]

Answer:

n = -28

Step-by-step explanation:

-4 = 10 + n/2

first step, subtract 10 from each side to get:

-14 = n/2

cross-multiply to get:

n = -28

4 0

3 years ago

Read 2 more answers

HELP PLEASE! Im struggling

kondaur [170]

Answer:

c. $\dfrac{2}{3}$

Step-by-step explanation:

Let the common ratio be r.

$a_2 = \dfrac{2}{5}$

$a_3 = \dfrac{2}{5}r$

$a_4 = \dfrac{2}{5}r^2$

$a_5 = \dfrac{2}{5}r^3$

We are told that $a_5 = \dfrac{16}{135}$ .

$\dfrac{2}{5}r^3 = \dfrac{16}{135}$

$\dfrac{5}{2} \times \dfrac{2}{5}r^3 = \dfrac{5}{2} \times \dfrac{16}{135}$

$r^3 = \dfrac{8}{27}$

$r = \sqrt[3]{\dfrac{8}{27}}$

$r = \dfrac{2}{3}$

Answer: c. $\dfrac{2}{3}$

6 0

3 years ago

Marnie purchased a dining room table and 6 chairs for $1,860.00 before discount and taxes. Kristen purchased a queen bed, dresse

Kaylis [27]

Add up the totals before tax:

1860 + 5775 = 7635

Find 8.2% of this:

0.082 * 7635 = 626.07

Now add this on to it:

7635 + 626.07 = 8261.07

So the total cost is $8,261.07

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3 years ago

Read 2 more answers

A submarine at a depth of -2 2/3 feet descended 5 1/2 feet. How many feet must the submarine rise to reach the surface? Explain

vladimir2022 [97]

Original position of the submarine below the Surface = -2 2/3= -8/3

Submarine at a depth of -2 2/3 feet descended by 5 1/2 feet.

So new position of the Submarine = $\frac{-8}{3}-\frac{11}{2}\\\\ = \frac {-16 - 33}{2}\\\\ = \frac{-49}{6}$

To Reach the surface submarine must rise = 0-(-49/6)

As seen from the equation the two negative sign [(-)(-)] will change into a positive sign.

At the surface the position of the submarine = +49/6 feet

5 0

3 years ago