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Maru [420]
3 years ago
13

Which of the following statements describes a positive correlation?

Mathematics
1 answer:
vaieri [72.5K]3 years ago
3 0

Answer:

The greater the cost, the better the merchandise

Step-by-step explanation:

It’s giving a positive correlation.

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Write the number 0.0049 in scientific notation.
jeka57 [31]

Answer:

4.9000

if it is correct answer then please follow me

3 0
3 years ago
Erik and Caleb were trying to solve the equation: 0=(3x+2)(x-4) Erik said, "The right-hand side is factored, so I'll use the zer
Mumz [18]

Answer:

C) Both

Step-by-step explanation:

The given equation is:

0=(3x+2)(x-4)

To solve the given equation, we can use the Zero Product Property according to which if the product <em>A.B = 0</em>, then either A = 0 OR B = 0.

Using this property:

(3x+2) = 0 \Rightarrow \bold{x = -\frac{2}{3}}\\(x-4) = 0 \Rightarrow \bold{x = 4}

So, Erik's solution strategy would work.

Now, let us discuss about Caleb's solution strategy:

Multiply (3x+2)(x-4) i.e. 3x^2-12x+2x-8 = 3x^2-10x-8

So, the equation becomes:

0=3x^2-10x-8

Comparing this equation to standard quadratic equation:

ax^2+bx+c=0

a = 3, b = -10, c = -8

So, this can be solved using the quadratic formula.

x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

x=\dfrac{-(-10)\pm\sqrt{(-10)^2-4\times3 \times (-8)}}{2\times 3}\\x=\dfrac{-(-10)\pm\sqrt{196}}{6}\\x=\dfrac{10\pm14}{6} \\\Rightarrow x= 4, -\dfrac{2}{3}

The answer is same from both the approaches.

So, the correct answer is:

C) Both

3 0
2 years ago
The population is decreasing at a rate of 5% per year. If the population is 30,000 today, what will the population be in 12 year
Lera25 [3.4K]

Answer:12,000

Step-by-step explanation:

.05*30,000=1,500

1,500*12=18,000

30,000-18,000=12,000

5 0
3 years ago
Read 2 more answers
A radio station is having a promotion in which every 12th caller receives a free concert ticket and every 15th caller receives a
marusya05 [52]
For this, we need to find the lowest common multiple of 12 and 15....

common multiples of 12 : 12,24,36,48,60
common multiples of 15 : 15,30,45,60
LCM = 60

the caller that will be the first to win both is the 60th caller


7 0
3 years ago
Read 2 more answers
is the number that is 11 times as great as 3 the same as the number that is three times as great as 11 use pictures or equations
riadik2000 [5.3K]
33 is correct answeer
3 0
3 years ago
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