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Mariulka [41]
3 years ago
11

Which of the following are solutions to the equation below? check all that apply. 4x^2+4x+1=9

Mathematics
1 answer:
AVprozaik [17]3 years ago
8 0
  • ±Answer:

X 1 = 1  ; X 2 = -2

Step-by-step explanation:

We clear the whole numbers, equal to (zero) and use the calculation formula of the quadratic function, according the image:

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find the local and/or absolute extrema for the function over the specified domain. (Order your answers from smallest to largest
Arlecino [84]

Answer:

Minimum 8 at x=0, Maximum value: 24 at x=4

Step-by-step explanation:

Retrieving data from the original question:

f(x)=x^{2}+8\:over\:[-1,4]

1) Calculating the first derivative

f'(x)=2x

2) Now, let's work to find the critical points

Set this

2x=0\\x=0    

0, belongs to the interval. Plug it in the original function

f(0)=(0)^2+8\\f(0)=8

3)  Making a table x, f(x) then compare

x|  f(x)

-1 | f(-1)=9  

0 | f(0)=8   Minimum

4 | f(4)=24 Maximum

4) The absolute maximum value is 24 at x=4 and the absolute minimum value is 8 at x=0.    

5 0
3 years ago
Terri has 7 pens in a box.
lora16 [44]

a) I have attached an image of a probability tree diagram.

b) 0.02332 (please round to where you need)

The probability that Terri chooses a blue pen is 2/7. The probability that Terri chooses a red pen is 4/7. The probability that Terri chooses neither a red nor blue pen is 1/7.

2/7 x 4/7 x 1/7 = 0.02332

Hope this helps! :)

6 0
3 years ago
Classify the real numbers as rational or irritational numbers
Andre45 [30]

Answer:

god loves you <3 .

Step-by-step explanation:

3 0
3 years ago
1=ln(x+4) round your answer to the nearest hundredth
Alja [10]
<span>1=<span>ln<span>(<span>x+4</span>)</span></span></span><span><span>ln<span>(<span>x+4</span>)</span></span>=1</span><span><span>ln<span>(<span>x+4</span>)</span></span>=1</span><span><span>e<span>ln<span>(<span>x+4</span>)</span></span></span>=<span>e1</span></span><span><span>x+4</span>=<span>e1</span></span><span><span>x+4</span>=2.718282</span><span><span><span>x+4</span>−4</span>=<span>2.718282−4</span></span><span>

x=<span>−<span>1.281718</span></span></span>
5 0
3 years ago
2555!!!!!!! Pointss!!!!!!
kykrilka [37]

Answer:

17

Step-by-step explanation:

The range of the data is the range between the highest and lowest data point so in this case its 132 - 115

6 0
3 years ago
Read 2 more answers
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