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TEA [102]
3 years ago
5

Y=x-8 y=-2x+1 how do you solve the system of equation

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
7 0
X - 8 = Y = -2x + 1
↓
X - 8 = -2x + 1
↓
3x - 8 = 1
↓
X = 3

so y = -5
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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
A rectangular room measures 18 ft by 37 ft. How many
Lera25 [3.4K]

Step-by-step explanation:

the area of a rectangle is length × width.

in our case

37 × 18 = 666 ft²

so, we need 666 ft² of tiles.

8 0
3 years ago
Read 2 more answers
Find the coordinates of point z such that the ratio of fz to zd is 5;3
Vilka [71]

The point such that the coordinate is 5;3 is (14, 0)

<h3>Midpoint of coordinates using ratio</h3>

The formula for finding the midpoint of a line in the ratio m:n is expressed as:

M(x, y) = {(mx₁+nx₂)/2, (my₁+ny₂)/2,}

Given the coordinate of G and D on the line as G(5, 0) and D(1,0)

Since there is no y-axis, hence;

x = 5(5)+1(3)/2

x = 25+3/2

x = 28/2

x =14

Hence the point such that the ratio is 5;3 is (14, 0)

Learn more on midpoint of a line here: brainly.com/question/5566419

#SPJ1

8 0
2 years ago
Indicate whether the observational study used is cross-sectional, retrospective or prospective: Researchers from the National In
sp2606 [1]

Answer:

Cross-sectional

Step-by-step explanation:

Cross sectional study is a type of observational study that analyzes data from a population of a representative subset at a particular point in time.

4 0
3 years ago
Which equations support the fact that rational numbers are closed under addition?
Talja [164]
Do you mean
√9 + √9 = 2√9 


if so it is the answer
5 0
4 years ago
Read 2 more answers
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