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konstantin123 [22]
3 years ago
5

I really need help on this question

Mathematics
1 answer:
nekit [7.7K]3 years ago
5 0

Answer:

Your answer is C

Step-by-step explanation:

If you plug each answer into a graphing calculator you should get the only right answer to be C.

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Help will name Brainliest
11111nata11111 [884]

Answer:

x = \frac{\sqrt{22} }{2}

Step-by-step explanation:

Using the Pythagorean Theorem we can solve this problem.

The legs of the triangle will be the same (the dashes in the middle of the line indicates they are the same).

The Pythagorean Theorem will look like this:

a^{2}+a^{2}  = (\sqrt {11})^{2}

Now, let's find a:

2a^{2} = 11                The square of a radical will be whatever is under the arch

a^{2}=\frac{11}{2}                  Divide 11 by 2

\sqrt{a^{2} } = \sqrt{\frac{11}{2} }           Square root both sides

a = \frac{\sqrt{22} }{2}

Therefore, the length of side x is equal to \frac{\sqrt{22} }{2}.

Hope this helps!!

8 0
2 years ago
Compute the coefficient of determination. Round your answer to four decimal places. A regression equation is obtained for a set
Damm [24]

Answer:

0.8676

Step-by-step explanation:

Given that :

Total Sum of Square (SST) = 103.5

Regression Sum of Square (SSR) = 89.8

Erroe Sum of Square (SSE) = 13.7

The Coefficient of determination (R²) :

R² = SSR / SST

R² = 89.8 / 103.5

R² = 0.8676328

R² = 0.8676

7 0
3 years ago
A shipping company uses the box shown.
ICE Princess25 [194]

Answer:

300 cm^2

Step-by-step explanation:

The volume of the rectangular prism is calculated by multplying lenght to the widht to the height

20*15*10 = 300 cm^2

6 0
3 years ago
Please answer a and b
Assoli18 [71]

Answer:

(-2,1) (-1,1),(0,1)

Step-by-step explanation:

find the gradient first

6 0
3 years ago
A girl 160cm tall, stands 360 cm from a lamp post at night. Her shadow from the light is 90 cm long. How high is the lamp post?
Volgvan
The lamp post is 202.5 cm high. 

Hope this answer helped..it would really help me if you gave me brainliest answer, I desperately need. Thanks
3 0
3 years ago
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