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hichkok12 [17]
3 years ago
7

Help I’ll give you 30 points

Mathematics
2 answers:
amm18123 years ago
8 0

Answer:

QR = 6.8

XZ = 16.25

Step-by-step explanation:

We can use ratios to solve since the triangles are similar

7.2         QR

------- = ------------

18           17

Using cross products

7.2 *17 = QR*18

Divide by 18

7.2 *17/18 = QR*18/18

QR = 6.8

7.2          6.5

------- = ------------

18           XZ

Using cross products

7.2 XZ = 6.5*18

Divide by 7.2

7.2 XZ = 6.5*18/7.2

XZ = 16.25

Gnesinka [82]3 years ago
6 0

Answer:

a) 16.25 centimeters

b) 6.8 centimeters

Step-by-step explanation:

We can set up a proportion for both of these problems.

a) Look at the longest side of each triangle. We can set up a fraction: 7.2/18. We can also set up a fraction for XZ and PR:

6.5/x

x represents the length you're trying to find.

Since the triangles are similar, we have an equation:

7.2/18=6.5/x

Cross multiply

16.25

XZ is 16.25 centimeters long.

b)

We can do same thing:

7.2/18=x/17

Cross multiply

6.8

QR is 6.8 centimeters long.

Hope this helps!

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The variable z is directly proportional to x. when x is 13, z has the value 169. what is the value of z when x = 19?
malfutka [58]

Given that, the variable z is directly proportional to x.

So, we can set up an equation as following:

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Hence, next sep is to plug in these values in the above equation to get the value of k. Therefore,

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From the above equation we will get:

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I hope this helps you!

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