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3 years ago

3 times x squared minus 4 times x

Mathematics

1 answer:

user100 [1]3 years ago

7 0

3x^2 - 4x

Im not quite sure what your asking, so I hope this helps!

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Terry had his car repaired at ace auto. He was charged $50 per hour of labor plus $150 for parts. It's total bill for the repair

amid [387]

Answer:

Terry was charged for 4.5 hours of labor.

Step-by-step explanation:

50x + 150 = 375

Where x = hours

50x = 375 - 150

50x = 225

Divide both sides by 50 to isolate x

x = 4.5

5 0

3 years ago

Please help, i have to finish this right now

Naddik [55]

1st one: linear
2nd one: linear
3rd one: nonlinear

3 0

2 years ago

Read 2 more answers

The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.917 g and a standard deviation

Nutka1998 [239]

Answer:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

Step-by-step explanation:

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

$X \sim N(0.917,0.303)$

Where $\mu=0.917$ and $\sigma=0.303$

We have the following info from a sample of n =37:

$\bar X= 0.872$ the sample mean

And we want to find the following probability:

$P(\bar X \leq 0.872)$

And we can use the z score formula given by;

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score for the value of 0.872 we got:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

6 0

3 years ago

What’s the area A. 64 B. 44 C. 30.25 D. 13.75

dalvyx [7]

Answer:

B) 44

Step-by-step explanation:

Let's start with the triangles. Normally, when dealing with triangles, you would use the formula (B*H*1/2), but since there's two identical triangles, we can just do (B*H) and get the area for both:

2.5*5.5=13.75

Then to solve for the square, it is also (B*H):

5.5*5.5=30.25

At this point, to solve for the total area, you just add the areas together:

13.75+30.25=44

Hope this helps!

6 0

2 years ago

Read 2 more answers

Please help it’s timed !!!! 80 points!!!!

Irina18 [472]

Answer:

The answer to your question is the letter a) √3/3

Step-by-step explanation:

Data

find tan 30°

Use the triangle 30°-60°-90° (see the picture below)

Tangent is the trigonometric function that relates the Opposite side and the adjacent side.

tan Ф = Opposite side / Adjacent side

-Substitution

tan Ф = 1/√3

or 1/√3 √3/√3 = √3/3

3 0

2 years ago

Read 2 more answers