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Korvikt [17]
2 years ago
11

a 23 centimeter piece of rope is cut into two pieces. If one piece is z centimeter's long, express the other length as an algebr

aic expression in z
Mathematics
1 answer:
olga2289 [7]2 years ago
6 0

Answer:

23 - z

Step-by-step explanation:

Given

Length =23cm

One\ Piece = z

Required

Derive an expression for the second piece

Represent the second piece with x,

So, we have:

x + z = 23cm

x + z = 23

Subtract z from both sides

x + z - z = 23 -z

x = 23 -z

Hence:

An expression for the second piece is 23 - z

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Answer:

435=107+82+246

Step-by-step explanation:

I think this is correct. Someone correct me if I am wrong, but I took 435 and subtracted 107, then I took that number and divided it by 4 and took one of those 4 and put it in the equation then multiplied the last three.

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Find the perimeter and area of the polygon with the given vertices. W(5,?1), X(5, 6), Y(2,?1), Z(2, 6)
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3 years ago
Find an equivalent ratio in simplest terms: 25:75
Sati [7]

Answer:

1:3

Step-by-step explanation:

Both numbers are divisible by 25:

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Hope this helps!

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Someone please help me in this question it is kind of confusing it is a question under pre calculus in first year calculus i wil
masya89 [10]
Neither P, nor A are on the sketch 
I guess P is the upper right corner of the rectangle 
and A=(0,1) 

P belongs to the line going through (1,0) and B(0,y) 
<span>but we don't know the y-coordinate of B </span>

<span>the triangle is right and isosceles, so pythagoras a²+a²=2² ... 2a²=4 ... a²=2 ... a=sqrt2 </span>
now look at the right triangle BOA 
<span>his hypotenuse is AB=sqrt2 and the <span>the kathete</span> OA is 1 </span>
so y²+1²=(sqrt2)² ... y²+1=2 ... y²=1.. y=1 
so the coordinates of B are (0,1) 

the line going through (1,0) and (0,1) is L(x)=-x+1 

P belongs to this line, so the coordinates of P are P(x,-x+1) (0<x<1) 

b) so if that's P, the height of the rectangle is -x+1 and the width=2x 
<span>so its area A(x)=2x*(-x+1)= -2x²+2x 

I hope my answer has come to your help. Thank you for posting your question here in Brainly.

</span>
5 0
3 years ago
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