△FSB∼△ZDR . What is the value of x? Enter your answer. How many units?

Mathematics

1 answer:

kari74 [83]3 years ago

4 0

Answer: 22

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Explanation:

The triangles are similar, so we know the corresponding sides form ratios that are equal.

Note how...
FS and ZD are the first two letters of FSB and ZDR respectively
FB and ZR are the first & last letters of FSB and ZDR respectively

Based on those two facts above, we can form this proportion
FS/ZD = FB/ZR
38/15.2 = 55/x

Solve for x
38/15.2 = 55/x
38*x = 15.2*55
38*x = 836
x = 836/38
x = 22

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Please help fast ^^

allsm [11]

The discriminante :
b^2-4ac

1^2 - 4 * -2 * -28 = 1 - 224 = -223

When the discriminant (b^2-4ac) is less than 0, the equation had no real solutions.

-223<0, so, 2x^2+x-28 = 0 has no real solutions.

Hope that helps :)

7 0

3 years ago

What is the standard deviation of this data set? Use a calculator to help you.

ale4655 [162]

Answer:

Standard deviation = 14.064

Step-by-step explanation:

We are given the following data;

X X - $Xbar$ $(X-Xbar)^{2}$