All categories

3 years ago

38. By the commutative property, 3(w +9) is

Mathematics

2 answers:

taurus [48]3 years ago

5 0

Answer:

Step-by-step explanation:

3 ( w + 9 )

3 × w + 3 × 9

3w + 27

Hope this helps

plz mark as brainliest!!!!!!!

melomori [17]3 years ago

4 0

I think it’s d, but if not then the other answer says b.

Also I don’t see an answer for c.

You might be interested in

A square garden plot measures 180 square feet. A second square garden plot measures 320 square feet. How many more feet of fence

REY [17]

The second garden plot will require 8√5 feet more fence than the first garden plot.

Further explanation:

In order to find the fence, we have to find the perimeter of both squares

So,

Area of Square 1: A1=180 square feet

Area of Square 2: A2=320 Square feet

Let x be the side of square 1:

Then,

$A_1=x^2\\180=x^2\\Taking\ square\ root\ on\ both\ sides\\\sqrt{180}=\sqrt{x^2}\\x=\sqrt{2*2*3*3*5}\\x=\sqrt{2^2*3^2*5}\\x=2*3\sqrt{5}\\x=6\sqrt{5}$

For second square:

Let y be the side of second square

$A_2=y^2\\320=y^2\\Taking\ square\ root\ on\ both\ sides\\\sqrt{320}=\sqrt{y^2}\\y=\sqrt{2*2*2*2*2*2*5}\\y=\sqrt{2^2*2^2*2^2*5}\\y=2*2*2\sqrt{5}\\y=8\sqrt{5}$

Perimeter of First Square:

$P_1=4x\\=4(6\sqrt{5})\\=24\sqrt{5}\ feet$

Perimeter of Second Square:

$P_2=4y\\=4(8\sqrt{5})\\=32\sqrt{5}\ feet$

The smaller perimeter will be subtracted from larger perimeter to find that how much more fence will be needed.

$P_2-P_1=32\sqrt{5}-24\sqrt{5}\\=(32-24)\sqrt{5}\\=8\sqrt{5}\ feet$

The second garden plot will require 8√5 feet more fence than the first garden plot.

Keywords: Radicals, Operations on Radicals

Learn more about radicals at:

#LearnwithBrainly

6 0

3 years ago

Let f(x) = 5x + 4 and g(a) = a2 − 4a + 4 2 . Find the function value. g(−2)

natta225 [31]

Answer: 54

Step-by-step explanation:

replace "a" with "-2" in the g-equation

g(a) = a² - 4a + 42

g(-2) = (-2)² - 4(-2) + 42

= 4 + 8 + 42

= 54

7 0

3 years ago

{(-1, 2), (0, 2), (5, 2)} is a function. O True O False

jarptica [38.1K]

True. When the points are plotted on a graph and connected, they pass the vertical line test. No x value is the same.

6 0

3 years ago

Read 2 more answers

2 horses ran from the same place from the at same time one horse ran at 2 miles per second and the other ran at a speed for 18 m

RSB [31]

Answer:

no horse can run 18 miles per second or even 2 miles per second.

Step-by-step explanation:

4 0

3 years ago

The sum of four consecutive even integer numbers is 84. find the four numbers.

vodomira [7]

84/4=21

now take the 2 even numbers below 21 and the 2 even numbers above 21

18 +20 + 22 +24 = 84

the numbers are 18, 20, 22 & 24

3 0

3 years ago