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miss Akunina [59]

3 years ago

8

What is the area of a rectangle that has a length of 12x and a width of (x + 3)? A) 13x + 3 B) 12x + 36 C) 12x2 + 3x D) 12x2 + 3

6x

1 answer:

umka2103 [35]3 years ago

8 0

I'm pretty sure the answer is D... $12x^{2} + 36x$

you want to multiply 12x by (x+3)

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1. Which store had the highest demand both before and after the price increase?

Anna71 [15]

Answer:

The answer is Store 4

Step-by-step explanation:

As before the price increases, Store 4 has the highest price among other Stores. After price increases, Store 4 continued to has highest price among them

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The price of milk increased from $3.25 to $3.75. What is the percent of change for the price of milk to the nearest tenth? Show

nikitadnepr [17]

Percent = part/whole

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So you move the decimal over 2 places to find the percent.
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pishuonlain [190]

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3 years ago

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jane and jill were simplifying the expression (2x2+x) +2(-x2+×) and obtained different answers . who is right and why?

Romashka [77]

Answer: who ever arrives at the answer x=0/3 =0 is correct

Step-by-step explanation:

Even though I need supporting details from the individual answers of Jane and Jill to pass my own judgment.

Given the expression

(2x²+x) +2(-x²+×)=0

Let's us open the bracket

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Collecting like terms

2x²-2x²+x+2x=0

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3 years ago

48% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually

oksian1 [2.3K]

Answer:

There is no sufficient evidence to support the executive claim

Step-by-step explanation:

From the question we are told that

The population proportion is $p = 0.48$

The sample proportion is $\r p = 0.45$

The sample size is $n = 300$

The level of significance is $\alpha = 0.02$

The null hypothesis is $H_o : p= 0.48$

The alternative hypothesis is $H_a : p \ne 0.48$

Generally the test statistics is mathematically evaluated as

$t = \frac{\r p - p }{ \sqrt{ \frac{p(1 - p )}{n} } }$

=> $t = \frac{0.45 - 0.48 }{ \sqrt{ \frac{0.48 (1 - 0.48 )}{300} } }$

=> $t = -1.04$

The p-value is mathematically represented as

$p-value = 2P(z > |-1.04|)$

Form the z-table

$P(z > |-1.04|) = 0.15$

=> $p-value = 2 * 0.15$

=> $p-value = 0.3$

Given that $p-value > \alpha$ we fail to reject the null hypothesis

Hence we can conclude that there is no sufficient evidence to support the executive claim

5 0

3 years ago