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vodomira [7]
2 years ago
10

11 and 12 and the work plsss

Mathematics
1 answer:
Aliun [14]2 years ago
5 0

Answer:

xx

Step-by-step explanation:

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Help pleaseeeeeeee.
Dmitry_Shevchenko [17]
Answer: 11x

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Explanation:

Let L be the length of rectangle B
There are two copies of L (along the top and bottom of the rectangle). The vertical pairs of sides are both 7x each.

For the triangle, we have three sides of 12x since this is an equilateral triangle. All three sides are congruent for any equilateral triangle.

The perimeter of the triangle is
P = s1+s2+s3
P = 12x+12x+12x
P = 36x

The perimeter of the rectangle is 
P = 2*L+2*W
P = 2L+2*7x
P = 2L+14x

Since both perimeters are the same, this means 
perimeter of triangle = perimeter of rectangle
36x = 2L+14x
36x-14x = 2L+14x-14x
22x = 2L
2L = 22x
2L/2 = 22x/2
L = 11x

So the length of the rectangle, in terms of x, is 11x. This is the final answer.

Note: if we knew the value of x, then we could find the numeric value of the length for the rectangle. But since we don't know x, we leave it as 11x.

7 0
3 years ago
Problem page the length of a rectangle is four times its width. if the perimeter of the rectangle is 70 cm , find its area.
agasfer [191]
So we can call the width of the rectangle x.
So then the length would be 4x.
The perimeter would then be 10x.
Since the perimeter is 70, we can say 70 = 10x.
And then simplify that to 7 = x.
So the length of a rectangle would be 28 cm, and the width would be 7.
So to find the area, just multiply length by width.
28*7 = 196 square cm
So the rectangle's area is 196 square cm.

I hope I helped!
5 0
3 years ago
Which statement correctly describes the expression (-70)(-6)?
EastWind [94]

Answer: the answer is letter A

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Solve x^3 = 1 over 8.<br><br> 1 over 2<br> ±1 over 2<br> 1 over 4<br> ±1 over 4
Oduvanchick [21]

Answer:

x = 1/2

Step-by-step explanation:

x^3 = 1/8

Take the cube root of each side

x^3 ^ (1/3) = (1/8)^ (1/3)

Rewriting 8 as 2^3

x^3 ^ (1/3) = (1/2^3)^ (1/3)

x = 1/2

7 0
3 years ago
Read 2 more answers
Hagan ran 3 miles in 15 minutes at a constant speed. How long will it take him to run 12 miles at the same speed?
Ratling [72]

Answer:

about 2.4 or 2

Step-by-step explanation:

because 15 divided by 3 gives you unit rate which is 5 now 12 divided by 5 which you can round or get decimal

5 0
3 years ago
Read 2 more answers
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