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Tpy6a [65]
4 years ago
8

If 7x=3y and 5y=7z then X/Z?

Mathematics
1 answer:
Aleks04 [339]4 years ago
7 0

Answer:

3/5=x/z

Step-by-step explanation:

7x=3y

7(3)=3(7)

21=21

5y=7z

5(7)=7z (plug in the seven from the first step)

35=7z

then divide both sides by 7

5=z

therefore, X/Z=3/5

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Think about the properties of a square. Is a square also a rhombus? Is it also a rectangle? Answer each question and explain you
djyliett [7]

Answer:

Properties of rhombus

. all the properties of a parallelogram( apply the ones that matter hair are parallel sides opposite angles congruent and consecutive angles are supplementary)

. all sides are congruent by definition

. the diagonals bisect the angles

. the diagonals are perpendicular bisectors of each other

Properties of rectangle

. all the properties of parallelogram apply (the ones that matter hair are parallel sides, opposite sides are congruent, and diagonals bisect each other)

. all angles are right angles by definition

. the diagonals are congruent

Properties of square

. all the properties of a rhombus apply( the ones that matter have a parallel sides diagonals are perpendicular bisector of each other and diagonals bisect the angles)

. All the properties of rectangle apply (the only one that matter where is diagonals are congruent)

. All angles are right angles by definition

Hope it will help you

Step-by-step explanation:

4 0
4 years ago
Write a rule for a geometric sequence that has a 1 as its first term and a common ratio of -4. what is the seventh term of this
ivann1987 [24]

I hope first term is 1.

Hope this is your question, if not I think you will, still be able to

find an answer of your question based on this solution.

The formula for general term of a geometric sequence is,

a_{n} =a_{1} *r^{n-1}

Where, first term: a_{1} =1 and common ratio: r = -4.

So, first step is to plug in the values of a1 and r in the above formula to get the rule of this geometric sequence. Hence,

a_{n} =1 *4^{n-1}

a_{n} =4^{n-1}

So, the rule of the geometric sequence is a_{n} =4^{n-1}.

To find the seventh term, plug in n = 7 in the above rule. Therefore,

a_{7} =4^{7-1}

= 4^6

= 4096

Hope this helps you!.

6 0
4 years ago
the area of a rectangle is 162 square meters. if the length is 18 meters, what is the perimeter of the rectangle
grigory [225]

Answer:

The perimeter of the rectangle is 54 meters.

Step-by-step explanation:

In order to find the perimeter of the rectangle, which is the sum of all the sides, we need to know not only the length, but also the width.  The formula for area of a rectangle is A = length x width.  Setting up an equation to find width 'w', we get:  162 = 18 x w.  Using inverse operations, we divide both sides of the equation by 18 to get w = 9.  Since we now know that w = 9 and l = 18, we can find the perimeter using the following equation:  P = 2w + 2l or P= 2(9) + 2(18) or P=54 meters.  

4 0
4 years ago
Solve the following equation by first writing the equation in the form a x squared = c:
Radda [10]

Answer:

The Quadratic Formula: Given a quadratic equation in the following form:

ax2 + bx + c = 0

...where a, b, and c are the numerical coefficients of the terms of the quadratic, the value of the variable x is given by the following equation:

\small{ x = \dfrac{-b \pm \sqrt{b^2 - 4ac\phantom{\big|}}}{2a} }x=  

2a

−b±  

b  

2

−4ac  

∣

∣

∣

​  

 

​  

 

​

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Which expressions are equivalent to (2^2-9) (x + 3)?
mestny [16]

Answer:

(x^2-3^2)(x+3)

(x-3)(x+3)(x+3)

(x-3)(x+3)^2

Step-by-step explanation:

Given

(x^2-9)(x+3)

Required

Select 3 equivalent expressions

(x^2-9)(x+3)

Express 9 as 3^2

(x^2-3^2)(x+3) --- This is one equivalent expression

Take x^2 - 3^2 as difference of two squares

(x-3)(x+3)(x+3) -- This is another equivalent expression:

Solving further:

(x-3)(x+3)(x+3) becomes

(x-3)(x+3)^2   -- This is another equivalent expression:

Hence, the equivalent expressions are:

(x^2-3^2)(x+3)

(x-3)(x+3)(x+3)

(x-3)(x+3)^2

7 0
3 years ago
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