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Aliun [14]
3 years ago
10

F f(x) = 2x2 + 1 and g(x) = x2 – 7, find (f + g)(x).

Mathematics
1 answer:
shutvik [7]3 years ago
4 0
2x2 + 1 + <span> x2 – 7
= 3x2 - 6

answer is </span><span>C. 3x2 – 6</span>
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1/4(1/3k+9)=6 step 1- 1/3k=15 step 2- 1/3k=15 step 3- k=5 find Olgas mistake step 1 step 2 steps 3 Olga did not make a mistake
shtirl [24]

Answer:

Step 3 contains error.

Step-by-step explanation:

The given equation is :

\dfrac{1}{4}(\dfrac{1}{3}k+9)=6

Step 1.

Cross multiplying,

(\dfrac{1}{3}k+9)=24

Step 2.

Subtract 9 from both sides

\dfrac{1}{3}k+9-9=24-9\\\\\dfrac{1}{3}k=15

Step 3.

Cross multiplying

k=15\times 3\\\\k=45

So, there is an error in step 3. The correct answer should be 45.

3 0
2 years ago
What is the unit rate as a simplified fraction? Thanks for the help;)
Trava [24]
Divide the y-value by the x-value. 

(1/2) / (2/5) = 1/2 x 5/2 = 5/4 
6 0
3 years ago
Vote red saw him vent​
NISA [10]

Answer:

xD yessirrrr

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3 0
3 years ago
Read 2 more answers
The resistance for resistors of a certain type is a random variable Xhaving the normal distribution with mean 9 ohms and standar
Y_Kistochka [10]

Answer:

P(8.6

And using the normal standard distirbution or excel we got:

P(-1

Step-by-step explanation:

Let X the random variable that represent the resistance for resistors of a population, and for this case we know the distribution for X is given by:

X \sim N(9,0.4)  

Where \mu=9 and \sigma=0.4

We are interested on this probability

P(8.6

And the z score formula is given by:

z=\frac{x-\mu}{\sigma}

Using this formula we got:

P(8.6

And using the normal standard distirbution or excel we got:

P(-1

3 0
3 years ago
Read 2 more answers
#1 find the value of the expression
Fantom [35]
13x[4+(9+2)]
13x[4+11]
13x[15]
195


7 0
3 years ago
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