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2 years ago

Help&EXPLAIN Don’t use for points or will be reported and I’ll take the points back

Mathematics

1 answer:

anzhelika [568]2 years ago

6 0

Answer:

X=151

Step-by-step explanation:

1. 61+90= 151

-Combine the two given angles

2.180-151= 29

-Subtract the total of the two combined from 180 because all 3 angles of a triangle add up to 180.

-29 is your difference which is also the angle next to X.

3.180-29= 151

-To find angle X you subtract 29 from 180 because angle X and 29 are supplementary angles that add up to 180.

-Therefore X=151

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What number must be added to the polynomial to complete the square? x^2 + 7x

Virty [35]

It could be: (x + 7/2)^2 = x^2 + 7x + 49/4
So you should add it by 49/4.

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3 years ago

A surgical technique is performed on 10 patients. You are told there is an 80% chance of success. Find the probability that the

Alex17521 [72]

Answer:

Probability that the surgery is successful for exactly 6 patients is 0.088.

Step-by-step explanation:

The total number of patients is 10 and the probability of success is 0.8.

We have to determine the probability of success of the surgery of exactly 6 patients.

6 patients can be selected from 10 patients in $nC_r$ ways.

 $nC_r=10C_6= \frac {10!}{6!(10-6)!}$ 

 $= \frac{10!}{(6! \times 4!)}$ 

 $= \frac {3628800}{(720 \times 24)}$ 

=210

Let us consider a combination SSSSSSFFFF where S denotes success and F denotes failure. The probability of this combination is given by

 $0.8^6 \times 0.2^4$ since the chance of success is 0.8 and chance of failure is 0.2.

There are 210 such different combinations possible and the probability of every combination is the same. So we have to sum up all the probabilities to determine the final probability.

Therefore the probability that surgery is successful for 6 patients is $0.8^6 \times 0.2^4 \times 210=0.088$

5 0

2 years ago

Read 2 more answers

Please Help!!!!

Iteru [2.4K]

Step-by-step explanation:

Given : m∥n , ∠1= 50° , ∠2= 48° , and line s bisects ∠ABC

To prove = ∠3= 49°

Solution:

In figure, m∥n cut by traversal t.

So, ∠DEF = ∠ABC(alternative exterior angles)

∠1 + ∠2 = ∠4 + ∠5

∠ABC = ∠1 + ∠2 = 50° + 48° = 98°

Also given that s bisect angles ∠ABC.

∠4 = ∠5

∠ABC = ∠4 + ∠5 = 98°

∠4 + ∠4 = 98°

2∠4 = 98°

∠4 = 49°

∠4= ∠3 = 49° (vertically opposite angles)

∠3 = 49° ,hence proved

5 0

2 years ago

Q8: These Triangles are similar. What is the value of X?

Umnica [9.8K]

Answer:

The answer to your question is x = 15

Step-by-step explanation:

Use proportions to solve this problem

$\frac{x}{20} = \frac{12}{16}$

Solve for "x"

x = $\frac{12(20)}{16}$

Simplification

x = $\frac{240}{16}$

Result

x = 15

3 0

2 years ago

I need help pls ASAP show your work

REY [17]

Answer:

X= 43/3

Step-by-step explanation:

-1/4 x 5 = 3/4x - 12

-5/4=3/4x -12

-5=3x - 48

-3x-5 = -48

-3x = -48 + 5

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-3 x= -43

X= 43/3

8 0

2 years ago