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Free_Kalibri [48]
3 years ago
12

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!

Mathematics
2 answers:
sattari [20]3 years ago
6 0

Answer: B

<u>Step-by-step explanation:</u>

\sqrt{100} + \sqrt{-81}

  • \sqrt{100} = 10
  • \sqrt{-81} = \sqrt{-1} * \sqrt{81} = i * 9  = 9i

  \sqrt{100} + \sqrt{-81}

=    10    +    9i

Natalka [10]3 years ago
5 0

Answer:

i think the answer would be C

Step-by-step explanation:

since it seemed you had to divide the numbers a hundred would turn into ten and ninety would turn into nine and because you have one negative and one positive that means it would have to be a negative so it would be

10 - 9i


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(35 Points)<br> Evaluate ƒ(x) when x = 6.
pychu [463]

The value of the function is 6

Step-by-step explanation:

The function that we have in this problem is

f(x)=\left \{ {{3x^2+1}, -4

This means that:

when x is between -4 (excluded) and 6 (excluded), the value of the function is 3x^1+2

when x is between 6 (included) and 9 (excluded), the value of the function is 6

In this problem, we are asked to evaluate f(x) when x = 6. Therefore, we are in the second case: therefore, the value of the function is 6,

f(x)=6

Learn more about functions:

brainly.com/question/3511750

brainly.com/question/8243712

brainly.com/question/8307968

#LearnwithBrainly

8 0
3 years ago
Draw the graphs of the equations x – y = 1 and 2x + y = 8. Shade the area bounded by these two lines and y-axis. Also, determine
NikAS [45]

Answer:

Using Geometry to answer the question would be the simplest:

Step-by-step explanation:

Remembering the formula for the area of a triangle which is A=\frac12bh. One can then tackle the question by doing the following:

Step 1 Find the y-intercepts

The y-intercepts are found by substituting in x=0.

Which gives you this when you plug it into both equations:

-y=1\\y=-1\\y=8

So the y-intercepts for the graphs are (0,-1)\\, and (0,8) respectively.

Now one has to use elimination to solve the problems by adding up the equations we get:

x-y=1\\2x+y=8\\3x=9\\x=3

Now to solve for the y component substitute:

2(3)+y=8\\y=2

Therefore, the graphs intersect at the following:

(3,2)

Now we have our triangle which is accompanied by the graph.

now to solve it we must figure out how long the base is:

b=8-(-1)\\b=9

The height must also be accounted for which is the following:

h=3

Now the formula can be used:

A=\frac12bh=\frac12(9)(3)=\frac{27}2\ \text{units}^2

7 0
3 years ago
Read 2 more answers
Which equation does the model below represent?
qwelly [4]

Answer:

  A. 1.4 / 0.2 = 7

Step-by-step explanation:

Choices A and B are the only true mathematical statements. Of those, choice A seems to best match the model, where each small square represents 0.01 units.

5 0
3 years ago
HELP HURRY
WINSTONCH [101]
The first option is the answer, it is going from P to Q so the only logical answer would be the first choice
7 0
3 years ago
Please help me out..
sdas [7]

Answer:

x=41

y=139

Step-by-step explanation:

x+y = 180  since they form a straight line

y is 3x +16

y = 3x +16

Replace y in the first equation

x+3x +16 = 180

Combine like terms

4x +16 = 180

Subtract 16 from each side

4x+16-16 =180-16

4x =164

Divide each side by 4

4x/4 =164/4

x = 41

y = 3x +16

y = 3*41 +16 = 123+16 =139

5 0
3 years ago
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