All categories

2 years ago

6x+7=13+7x a 6 b -6 c 3 d -3

Mathematics

1 answer:

Softa [21]2 years ago

3 0

Answer:

The answer is B. x= -6

Step-by-step explanation:

hope this helps

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

12. From a rope 68 m long, pieces of equal size are cut. If length of one piece is 4/14 m, find the number of such pieces.

otez555 [7]

Answer:

hope this helps (sorry for messy handwriting!)

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Which of the following terms correctly describe the object below?

Anuta_ua [19.1K]

Answer:

B,E and F are your answers

4 0

2 years ago

Read 2 more answers

What's the equation for the line that passes through the given point and is parallel to the graph of the given line (3,-1);y=2x-

ad-work [718]

You should plug the x and y values into the original equations to get your b value. You should get a b value of 7. Your new equation should be y=2x+7

5 0

2 years ago

PLEASE HELP I NEED THIS ASAP WHOEVER ANSWERS FIRST AND CORRECT WILL BE MARKED AS BRAINLEST ABD BOTH GIVEN 5 STARS AND THANK ALSO

harina [27]

Answer:

28.

Step-by-step explanation:

if you add all the numbers together you get 27.6! follow the rule: if its higher then 5 round if its not then dont round. since it was a 6 we round and get 28.

6 0

3 years ago

Read 2 more answers