Ask question

Ask question

All categories

4 years ago

7

Emily installs artificial grass in her garden. The garden is 15 feet long and 30 feet wide. It takes her 4 hours to install the

grass. What is the average speed at which Emily installs the grass?

1 answer:

Vsevolod [243]4 years ago

7 0

15×30=450 so the garden is 450 square feet
450÷4=112.5
she did 112.5ft²/hour

You might be interested in

Which is the last operation when evaluating

Afina-wow [57]

subtraction [BODMAS 'S' comes last which means subtraction]

hope it helps...

7 0

3 years ago

Read 2 more answers

1. Are you for or against the legal driving age 16? And would you want to change it?

LenKa [72]

Answer:I’m definitely for the 1first one the second one no the 3rd one I’m for everyone to have

the right to have access to guns

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Which of the following is the midpoint between (-8, -1) and (-2, -5)?

Andrej [43]

last one (-5,-3)

this your answer dude

5 0

4 years ago

Please help with all 3

DerKrebs [107]

Answer:

1, volume=23×9×5

=1035

2, volume=(1/2×5×4)×20

... =200

3.

8 0

3 years ago

Read 2 more answers

Solve for x and y 1/(x+yi) + 2/(x-yi) = 1+i

aliina [53]

Answer:

Step-by-step explanation:

x+i*y≠0 ==> x≠0 and y≠0

x-i*y≠0 ==> x≠0 and y≠0

We must exclude (0,0) as solution.

$\dfrac{1}{x+i*y} +\dfrac{2}{x-i*y} =1+i\\\\\dfrac{1*(x-i*y)}{(x+i*y)(x-i*y)} +\dfrac{2*(x+i*y)}{(x-i*y)(x+i*y)} =1+i\\\\\\\dfrac{x-i*y+2x+2i*y}{x^2+y^2} =1+i\\\\3x+i*y=(1+i)(x^2+y^2)\\\\3x+i*y=(x^2+y^2)+i(x^2+y^2+i*(x^2+y^2)\\\\\left\{\begin{array}{ccc}3x&=&x^2+y^2\\y&=&x^2+y^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\3x&=&x^2+9x^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\x(10x-3)&=&0\\\end {array}\right.\\\\$

$\left\{\begin{array}{ccc}x&=&0\\y&=&0\\\end {array}\right.\ (to\ exclude) \ or \ \left\{\begin{array}{ccc}x&=&\dfrac{3}{10}\\\\y&=&\dfrac{9}{10}\\\end {array}\right.\\\\Sol=\{(\dfrac{3}{10},\dfrac{9}{10})\}\\$

4 0

3 years ago