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MAXImum [283]
3 years ago
9

{ 5x - y = 5 { 5x - 3y = 15 solve the system using substitution

Mathematics
2 answers:
Iteru [2.4K]3 years ago
8 0

Answer:

Not sure sorry,but can you please help me on the following:

Step-by-step explanation:

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the squares share one side with the rectangle. The total area of the constructed figure is 120 cm2. What is the perimeter of the rectangle?

yulyashka [42]3 years ago
5 0

Answer:

Step-by-step explanation:

How nice question 7s it

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Lucy Baker is analyzing demographic characteristics of two television programs, American Idol (population 1) and 60 Minutes (pop
creativ13 [48]

Answer:

Alternative hypothesis:\mu_1 -\mu_2 \neq 0

Or in the alternative way would be:

 Alternative hypothesis:\mu_1 \neq \mu_2

Step-by-step explanation:

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

On this case the claim that they want to test is: "The means for the two groups (American Idol and 60 Minutes) is the same". So we want to check if we have significant differences between the two means, so this needs to be on the alternative hypothesis and on the null hypothesis we need to have the complement of the alternative hypothesis.

Null hypothesis:\mu_1 -\mu_2 = 0

This null hypothesis can be expressed like this:

Null hypothesis:\mu_1 = \mu_2

Alternative hypothesis:\mu_1 -\mu_2 \neq 0

Or in the alternative way would be:

Alternative hypothesis:\mu_1 \neq \mu_2

4 0
3 years ago
I HAVE 2 MIN PLS HELP
Maksim231197 [3]

Answer:

C (ignore this it asked for 20 characters)

5 0
3 years ago
Elena works at least 4 hours but not more than 8 hours. The amount of money Elena earns for working t hours is represented by a
mezya [45]
That makes no sense what are we supposed to figure out
4 0
3 years ago
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2x^2 + 9x + 4 = 0 <br> PLEASE HELP! I WILL MARK AS BRAINLIEST
Karo-lina-s [1.5K]

(2x+1)(x+4)

calculator

4 0
3 years ago
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helpppppp pleaseeeeee
Olin [163]

Answer:


Step-by-step explanation:

M' = (8,2)

A' = (7,6)

T' = (2,6)

H' =(3,2)

If this is a reflection across the y axis, then all that will change is the x value. You have to read that carefully to make sure you understand it.

Notice that T = (-2,6). All that happens is the the minus becomes a plus.

5 0
3 years ago
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