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melisa1 [442]
3 years ago
13

Please help :) Find the unknown length y in the following pair of similar triangles. y= ?

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
4 0

Answer:

Y should equal to 4.5

Step-by-step explanation:

Since they are similar triangles and each of the measurements on the second triangle are divided by two you would do the same for y

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Explain how to form a linear combination to eliminate the variable y for this system 2x-3y=3 5x+2y=17
Nadusha1986 [10]
 Well to be exact the answer is x=3 y=1
3 0
3 years ago
Read 2 more answers
The length of a photograph is 1 cm less than twice the width. The area is 91cm^2. find the width and length.
maksim [4K]

Answer:

Width=6.5 cm

Length=12 cm

Step-by-step explanation:

Step 1: Express the lengths and widths

Width=w

Length=l, but 1 cm less than twice the width=(2×w)-1=2 w-1

Step 2: Solve for the length and width

A=L×W

where;

A=area of the photograph

L=length of the photograph

W=width of the photograph

In our case;

A=91 cm²

L=2 w-1

W=w

91=(2 w-1)w

2 w²-w=91

2 w²-w-91=0, is a quadratic equation

solve for w

w={-1±√(-1²-4×2×-91)}/(2×2)

w=(-1±27)/4

w=(27-1)/4=6.5, or (-1-27)/4=-8

Take w=6.5 cm

L=(2×6.5)-1=13-1=12 cm

Width=6.5 cm

Length=12 cm

6 0
3 years ago
Two times a number is the result when 7 times the same number is taken away from 99. What is the number?
OLEGan [10]

2x=99-7x

9x=99

x = 11


2x11 = 22

99-&7*11) = 22


 so the number is 11

7 0
3 years ago
What’s the answer to the product of 12 and k is 84
ra1l [238]

Answer:

7

Step-by-step explanation:

You would do the inverse opperation (divide) so 84/12.

Hope this helps :)

8 0
3 years ago
Read 2 more answers
Can someone help me with this ????
fenix001 [56]

Answer:

A.

(\frac{3}{3+5})(2 - (-14))+ (-14)

Step-by-step explanation:

Given

Ratio = 3:5

Q = -14

S = 2

Required

Which solution uses (\frac{m}{m+n})(x_2 - x_1)+ x_1

From the given parameters;

m:n = 2:5

m = 2\ and\ n = 5

x_1 = -14\ and\ x_2 = 2

Substitute the above values in (\frac{m}{m+n})(x_2 - x_1)+ x_1

This gives:

(\frac{m}{m+n})(x_2 - x_1)+ x_1

(\frac{3}{3+5})(2 - (-14))+ (-14)

<em>From the list of given options, only option A uses the given form of the formula...</em>

6 0
3 years ago
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