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BaLLatris [955]
3 years ago
5

Whats the difference between a and b

Mathematics
1 answer:
IRISSAK [1]3 years ago
3 0

Point A=-1.3

Point B= 1.3

These 2 points are reciprocals, which means that their sum is Zero. So basically they are exact opposites.

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a car travels along the highway to little rock a steady speed. when it begins it is 280 miles after 4 hours it 100
Nikitich [7]

The function that describes the car's distance from little rocks would be option A; y = 45x + 280

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Point 1:

(x, y) = (0, 280)

Since we are told the car's initial position is 280 miles in the time 0 h

Point 2:

(x, y) = (4, 100)

Since we are told the car's final position is 100 miles after 4h.

Let's find the Slope :

m = 45

Now, the equation of the line is:

y = mx + b

y = 45x + 280

Then, The function that describes the car's distance from little rocks would be option A; y = 45x + 280

Learn more about equations here;

brainly.com/question/10413253

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7 0
2 years ago
Kathleen lost a tooth today. Now she has lost 4 more than her sister Cara lost. Write an expression to represent the number of t
Alex Ar [27]

Answer:

k-4=c

Step-by-step explanation:

7 0
2 years ago
Fluoxetine, a generic anti-depressant, claims to have, on average, at least 20 milligrams of active ingredient. An independent l
san4es73 [151]

Answer:

t=\frac{18.7-20}{\frac{5}{\sqrt{80}}}=-2.326    

df=n-1=80-1=79  

p_v =P(t_{(79)}  

Step-by-step explanation:

Information given

\bar X=18.7 represent the sample mean for the content of active ingredient

s=5 represent the sample standard deviation for the sample  

n=80 sample size  

\mu_o =20 represent the value that we want to test

t would represent the statistic

p_v represent the p value for the test

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean for the active agent is at least 20 mg, the system of hypothesis would be:  

Null hypothesis:\mu \geq 20  

Alternative hypothesis:\mu < 20  

The statistic would be:

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

Now we can calculate the statistic:

t=\frac{18.7-20}{\frac{5}{\sqrt{80}}}=-2.326    

P value

The degrees of freedom are calculated like this:

df=n-1=80-1=79  

Since is a one left tailed test the p value would be:  

p_v =P(t_{(79)}  

6 0
3 years ago
The chart below describes the commissions earned by four different sales people. Sales Person Commission Earned Time on Sales Fl
ArbitrLikvidat [17]

Answer:

ALEX

Step-by-step explanation:

Because if u look it says ten minutes an e has 220 so that equals to almost 3'500 dollars Im only in 7th grade good luck

3 0
3 years ago
A company packs 36 boxes in each case to ship to stores. You have been assigned the task to determine the least amount of volume
pshichka [43]

Answer:

432 in^3.

Step-by-step explanation:

The volume of each individual box is 12 cubic inches. 12 × 36 = 432 cubic inches. The case needs to hold at least 432 in^3.

4 0
3 years ago
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