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3 years ago

How is the equation Y= 2X similar to the equation Y = 2X +3. how is it different

Mathematics

2 answers:

Svetlanka [38]3 years ago

8 0

Answer:

2x in common (slope)

Step-by-step explanation:

similar because they both have a slope of 2

different because the 2nd equation has a y intercept of 3

Alexxx [7]3 years ago

4 0

Answer:

Step-by-step explanion:

In slope intercept form (y=mx+b) the "mx" is the slope of the line and the "b" is where the line starts out on the y axis.

So since these lines both have the same slop they are parellel to eachother (like train tracks and will never cross) Hope this helps m8 :)

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It costs $4.25 to buy 3/4 lb of sour belts.

Klio2033 [76]

Answer:

None of the above.

Step-by-step explanation:

Given equation:

4.25 * 3.5

The cost of 3.5 lb of sour belts:

$14.875.

Simplify:

14 7/8

6 0

2 years ago

Evan earns $12 an hour plus $15 an hour for every hour of overtime. Overtime hours are any hours more than 30 hours for the week

DENIUS [597]

Part A: M = 12x. (x hours at the rate of $12/per hour) Part B: T = 12 * 30 + 15y. ( 30 hours per week at the rate of $12 per hour plus y hours at the rate of $15 per hour) Part C: Let us first find out the amount earned through regular working hours and overtime hours. Regular hours in a week is 30 at the rate of $12 per hour. It comes to 12*30 = $360 The remaining amount, 510-360 = 150, is earned through overtime. Overtime rate is $15 per hour. So the number of hours worked overtime = 150/15 = 10 Total hours worked during the week = 30 + 10 = 40.

3 0

4 years ago

Someone help, please!

Nikolay [14]

Answer:

(0,3) is one of them but i'm unsure what the other one is

Step-by-step explanation:

6 0

3 years ago

Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of a population mean at t

olga_2 [115]

Answer:

a) The critical value on this case would be $t_{crit}=1.325$

b) The critical value on this case would be $t_{crit}=-1.345$

c) The critical values on this case would be $t_{crit}=\pm 2.201$

Step-by-step explanation:

Part a

The system of hypothesis on this case would be:

Null hypothesis: $\mu \leq \mu_0$

Alternative hypothesis: $\mu > \mu_0$

Where $\mu_0$ is the value that we want to test.

In order to find the critical value we need to find first the degrees of freedom, on this case that is given df=20. Since its an upper tailed test we need to find a value a such that:

$P(t_{20}>a) = 0.1$

And we can use excel in order to find this value with this function: "=T.INV(0.9,20)". The 0.9 is because we have 0.9 of the area on the left tail and 0.1 on the right.

The critical value on this case would be $t_{crit}=1.325$

Part b

The system of hypothesis on this case would be:

Null hypothesis: $\mu \geq \mu_0$

Alternative hypothesis: $\mu < \mu_0$

Where $\mu_0$ is the value that we want to test.

In order to find the critical value we need to find first the degrees of freedom, given by:

$df=n-1=15-1=14$

Since its an lower tailed test we need to find b value a such that:

$P(t_{14}$

And we can use excel in order to find this value with this function: "=T.INV(0.1,14)". The 0.1 is because we have 0.1 of the area accumulated on the left of the distribution.

The critical value on this case would be $t_{crit}=-1.345$

Part c

The system of hypothesis on this case would be:

Null hypothesis: $\mu = \mu_0$

Alternative hypothesis: $\mu \neq \mu_0$

Where $\mu_0$ is the value that we want to test.

In order to find the critical value we need to find first the degrees of freedom, given by:

$df=n-1=12-1=11$

Since its a two tailed test we need to find c value a such that:

$P(t_{11}>c) = 0.025$ or $P(t_{11}$

And we can use excel in order to find this value with this function: "=T.INV(0.025,11)". The 0.025 is because we have 0.025 of the area on each tail.

The critical values on this case would be $t_{crit}=\pm 2.201$

5 0

4 years ago

What is the relationship between multiplying and factoring

tatyana61 [14]

Factoring is like multiplying becuase to find factors of a number there has to be 2 number to multiply which would equal the factor, for example the question is find the factors of 4. it would be :
4×1=4
2×2=4
so the factors of 4 are 1,2, and 4. To find these numbers I multiplied them

4 0

3 years ago