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2 years ago

If you explain and answer i will give brainly

Mathematics

1 answer:

CaHeK987 [17]2 years ago

7 0

6x - 5y = 3 x1

3x - 8y = -15 x2

===============

6x - 5y = 3

6x - 16y = -30

============= -

11y = 33

y = 3

6x - 5(3) = 3

6x -15 = 3

6x = 18

x = 3

(3,3)

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Can anyone help pls!!!!

Wittaler [7]

Answer:

√3 × √21

√3 × √3 × √7

(√3)^2 × √7

3 √7

8 0

3 years ago

Read 2 more answers

Charlie's garage has a rectangular floor space. Its length is 3 times its width. Charlie extends the width of his garage to 6 m,

MAXImum [283]

Answer:

The percentage change is 140%

Step-by-step explanation:

Given

$L= 3W_1$ ---- initial dimension

$W_2 = 6m$ --- new width

$A_2 = 45m^2$ --- new dimension

Required

The percentage increment

The length remains constant because only the width is extended.

The new area is:

$Area =Length * Width$

$A_2=L * W_2$

Make L the subject

$L = \frac{A_2}{ W_2}$

Substitute values for A and W

$L = \frac{45m^2}{6m}$

$L = \frac{45m}{6}$

$L = 7.5m$ --- this is the length of the garden

Calculate the initial width:

$L= 3W_1$

Make W1 the subject

$W_1 = \frac{1}{3} * L$

$W_1 = \frac{1}{3} * 7.5$

$W_1 = 2.5$

So, the initial area is:

$A_1 = L_1 * W_1$

$A_1 = 2.5 * 7.5$

$A_1 = 18.75$

The percentage change in area is:

$\%A = \frac{A_2 - A_1}{A_1}$

$\%A = \frac{45 - 18.75}{18.75}$

$\%A = \frac{26.25}{18.75}$

$\%A = 1.4$

Express as percentage

$\%A = 1.4*100\%$

$\%A = 140\%$

4 0

3 years ago

16.5 + 4.73 show work on how you got the answer

White raven [17]

16.5+4.73= 21.23 it’s basically regular adding just with decimal

8 0

3 years ago

Given: y = -x - 6

arlik [135]

$y=\dfrac{-x-6}{2}\qquad\text{multiply both sides by 2}\\\\2y=-x-6\qquad\text{subtract 2y from both sides}\\\\0=-x-2y-6\\\\\boxed{-x-2y-6=0}\qquad\text{change the signs}\\\\\boxed{x+2y+6=0}$

3 0

3 years ago

Read 2 more answers

What is the LOWER QUARTILE OR Q1 of the data set: 24, 25, 29, 30, 31, 31. 32, 34, 34?*

MaRussiya [10]

Answer:

n=9

Step-by-step explanation:

Q1=n+1/4

=9+1/4

=10/4

=2.5

8 0

3 years ago