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maksim [4K]
3 years ago
15

Which expression is equivalent to the given expression?

Mathematics
2 answers:
Anni [7]3 years ago
6 0

Answer:

The answer is the option D x(19-23)

Step-by-step explanation:

we have

19x-23x

Factor the term x in the expression

x(19-23)

Alborosie3 years ago
5 0
The answer is D because of the distributive property.

You would distribute x to 19 and -23 to make it equivalent to the given equation
 
I hope that helps!
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jack wants to buy a pair of trousers for $60 when he went to the store he found that the price was marked down by 20% how much d
Leno4ka [110]

they would cost 48 dollars


8 0
3 years ago
Read 2 more answers
The average household income for a recent year was $30,000. five years earlier the average household income was $24,500. assume
ikadub [295]

Using hypothesis test, we conclude that there is evidence to believe that the average household income has increased.

According to the question,

The average household income for a recent year (x₁⁻) = $30,000

The average household income for a recent year (x₂⁻) = $24,500

sample sizes n₁ = n₂ = 34

standard deviation of both samples were $24,500. Thus, s₁ = s₂ = $5928.

Null hypothesis:  There is no evidence to believe that the average household income has increased.

H₀ : μ₁ ≤ μ₂

Alternative hypothesis:  There is evidence to believe that the average household income has increased.

H₁: μ₁ > μ₂  

To check hypothesis we have the formula

Standard error=  \sqrt{\frac{s_{1} ^{2} }{n_{1} } + \frac{s^{2} _{2} }{n_{2} }  }

= \sqrt{2067128.4706}

= 1437.7512

Thus, standard error is $1437.7512.

Formula for test statistic = [(x₁⁻ -  x₂⁻) - (μ₁ - μ₂)]/standard error

= [(30000 -  24500) - 0]/1437.7512

= 3.8254

The critical value of z at 5% level of significance is 1.6449.

Here, the calculated value is greater than the critical value so we reject H₀.

Hence using hypothesis test, we conclude that there is evidence to believe that the average household income has increased.

Learn more about hypothesis test here

brainly.com/question/15060525

#SPJ2

3 0
2 years ago
What is the width of a rectangle with length 5.5 cm and area 220 cm^2
Reika [66]
In the given question it is given that the length of the rectangle is 5.5 cm and the area of the rectangle is 220 cm^2.
Length of the rectangle = 5.5 cm
Area of the rectangle = 220 cm^2
Then we already know that
Area of a rectangle = Length * width
So Width of the rectangle = Area of the rectangle/ Length
                                           = 220/5.5
                                           = 2200/55
                                           = 40
So the width of the rectangle is 40 cm.<span>Hope  that you have got the answer you were looking for.

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3 0
3 years ago
Rewrite the equation 2y+3x=4 in slope-intercept form. then find the slope and y-intercept
Zinaida [17]

Answer:

y=  -3/2-2

Step-by-step explanation:

7 0
3 years ago
Can someone help and explain how to find domain and range I'm confused doing it on the last to I know how to do it with x just n
Thepotemich [5.8K]

Answer:

Domain is the set of inputs that will give you a defined output.

In example, f(x)=5/x, the domain would be all real numbers except for 0, because if it would be 0, it would be 5/0 which would be undefined.

Range is the set of outputs that are possible.

In example, f(g)=g(0), the range would be 0.

8 0
2 years ago
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