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KATRIN_1 [288]
3 years ago
9

The morning temperature was –5 °. By noon the temperature was 4 °. How many degrees had the temperature risen? *

Mathematics
2 answers:
Bond [772]3 years ago
8 0

Answer:

It rose 9 degrees.

Step-by-step explanation:

-5+9=4

valentinak56 [21]3 years ago
4 0

Answer:

9 degress

Step-by-step explanation:

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Evaluate the function for the given values to determine if the value is a root. p(−2) = p(2) = The value is a root of p(x).
bija089 [108]

<em>Note: Since you missed to mention the the expression of the function </em>p(x)<em> . After a little research, I was able to find the complete question. So, I am assuming the expression as </em>p(x)=x^4-9x^2-4x+12<em> and will solve the question based on this assumption expression of  </em>p(x)<em>, which anyways would solve your query.</em>

Answer:

As

p\left(-2\right)=0

Therefore, x=-2 is a root of the polynomial <em> </em>p(x)=x^4-9x^2-4x+12

As

p\left(2\right)=-16

Therefore, x=2 is not a root of the polynomial <em> </em>p(x)=x^4-9x^2-4x+12

Step-by-step explanation:

As we know that for any polynomial let say<em> </em>p(x)<em>, </em>c is the root of the polynomial if p(c)=0.

In order to find which of the given values will be a root of the polynomial, p(x)=x^4-9x^2-4x+12<em>, </em>we must have to evaluate <em> </em>p(x)<em> </em>for each of these values to determine if the output of the function gets zero.

So,

Solving for p\left(-2\right)

<em> </em>p(x)=x^4-9x^2-4x+12

p\left(-2\right)=\left(-2\right)^4-9\left(-2\right)^2-4\left(-2\right)+12

\mathrm{Simplify\:}\left(-2\right)^4-9\left(-2\right)^2-4\left(-2\right)+12:\quad 0

\left(-2\right)^4-9\left(-2\right)^2-4\left(-2\right)+12

\mathrm{Apply\:rule}\:-\left(-a\right)=a

=\left(-2\right)^4-9\left(-2\right)^2+4\cdot \:2+12

\mathrm{Apply\:exponent\:rule}:\quad \left(-a\right)^n=a^n,\:\mathrm{if\:}n\mathrm{\:is\:even}

=2^4-2^2\cdot \:9+8+12

=2^4+20-2^2\cdot \:9

=16+20-36

=0

Thus,

p\left(-2\right)=0

Therefore, x=-2 is a root of the polynomial <em> </em>p(x)=x^4-9x^2-4x+12<em>.</em>

Now, solving for p\left(2\right)

<em> </em>p(x)=x^4-9x^2-4x+12

p\left(2\right)=\left(2\right)^4-9\left(2\right)^2-4\left(2\right)+12

\mathrm{Remove\:parentheses}:\quad \left(a\right)=a

p\left(2\right)=2^4-9\cdot \:2^2-4\cdot \:2+12

p\left(2\right)=2^4-2^2\cdot \:9-8+12

p\left(2\right)=2^4+4-2^2\cdot \:9

p\left(2\right)=16+4-36

p\left(2\right)=-16

Thus,

p\left(2\right)=-16

Therefore, x=2 is not a root of the polynomial <em> </em>p(x)=x^4-9x^2-4x+12<em>.</em>

Keywords: polynomial, root

Learn more about polynomial and root from brainly.com/question/8777476

#learnwithBrainly

7 0
3 years ago
Read 2 more answers
A generator runs for 2 1/2 hours and uses 4 3/8 gal of fuel per hour .How many gallons of fuel did the generator use in total? E
uranmaximum [27]
4 3/8  x 2 = 8 6/8 
4 3/8 divide 2 = 3/32 
6/8 x 4 = 24/32 
24/32 + 3/32 = 27/32 
6 0
3 years ago
What is the value of x in 2(5^x) = 14?
r-ruslan [8.4K]

Answer:

0.34

Step-by-step explanation:

4 0
3 years ago
150 students at Pinellas Park middle school took part in the school clean up this is 25% of the school’s total students how many
Olenka [21]

25% x 4 = 100%

So,

150 x 4 = 600.

600 students go to Pinellas Park Middle School.

7 0
3 years ago
Read 2 more answers
Need tha answer explained
almond37 [142]

Answer:

Bri what do you mean explanation your answer is correct

Please mark me brainliest thanks

6 0
3 years ago
Read 2 more answers
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