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jarptica [38.1K]
3 years ago
9

Add (2x^3+5x−16)+(4x^3−10x^2−2x)

Mathematics
1 answer:
creativ13 [48]3 years ago
6 0

Answer:

Hi there!

Your answer is:

6x^3 -10x^2 +3x -16

Step-by-step explanation:

2x^3 +5x -16 +4x^3 -10x^2 -2x

Combine like terms

6x^3 -10x^2 +3x -16

Hope this helps!

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The average gasoline price of one of the major oil companies in Europe has been $1.25 per liter. Recently, the company has under
Ann [662]

Answer:

t=\frac{1.20-1.25}{\frac{0.14}{\sqrt{49}}}=-2.50    

Step-by-step explanation:

Data given and notation  

\bar X=1.20 represent the sample mean given

\sigma = 0.14 represent the population standard deviation

n=49 sample size  

\mu_o =1.25 represent the value that we want to test

t would represent the statistic (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean for the gasoline prices is lower than 1.25, the system of hypothesis would be:  

Null hypothesis:\mu \geq 1.25  

Alternative hypothesis:\mu < 1.25  

If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{1.20-1.25}{\frac{0.14}{\sqrt{49}}}=-2.50    

5 0
3 years ago
6x2(3x) simplify this expression
Papessa [141]
Answer: 3(2 • (2x))

Explanation:
6 • 2(3x)
6 • 6x
3(2 • (2x))
4 0
3 years ago
A line passes through the point ( 4, 19 ) and ( 9, 24 ) write a liner function in the form y=Mx + b for this line.
sweet-ann [11.9K]

Answer:

y=x+15

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is the width of a rectangle with lengh 25in and area 375 in. 2
bonufazy [111]

Answer:

15in

Step-by-step explanation:

Area=width x length

Width=375/25 = 15in

8 0
3 years ago
If anyone answers this is a BEAST !Justify each step of the solution by stating the property that was used to get to each step.
Neko [114]

4(-6x – 3) + 24x = -72x + 132

Step 1  -24x – 12 + 24x = -72x + 132    Distribute Property of Equality

Step 2: –12 = -72x + 132    equivalent

Step 3: -144 = -72x    Subtraction Property of equality

Step 4: 2 = x   Equivalent / Division property of equality


4 0
3 years ago
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