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sergeinik [125]
3 years ago
7

Solve: 5x^2 + 25x = 0. x = 0, x = 5 x = 0, x = −5 x = −5, x = 0, x = 5 x = 5, x = 25

Mathematics
1 answer:
MArishka [77]3 years ago
7 0
5x^2 + 25x = 0
5x(x + 5) = 0
x = 0, -5

The answer is: x = 0 and x = -5.
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I really need help please it is math
AnnyKZ [126]

Answer:

congruent

Step-by-step explanation:

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3 years ago
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Suppose a marketing company wants to determine the current proportion of customers who click on ads on their smartphones. It was
Zolol [24]

Answer: 10 customers.

Step-by-step explanation:

The formula to find the required sample size :

n=p(1-p)(\dfrac z^*}{E})^2        (1)

, where p= prior population proportion.

n= sample size.

\sigma = Population standard deviation from previous studies.

Let p be prior population proportion of the customers who click on ads on their smartphones .

As per given , we have

p=0.62

E= 0.27

For 92% confidence , significance level : \alpha=1-0.92=0.08

The critical value of z for 92% confidence interval from z-table would be

z_{\alpha/2}=z_{0.04}=1.75

Put theses values in the formula (1), we will get

n=(0.62)(1-0.62)(\dfrac{(1.75)}{0.27})^2

n=(0.2356)(6.48148)^2= 9.89745775254\approx 10

Therefore , the company should survey 10 customers .

6 0
3 years ago
Helppppppppppppppppppppp I need this ASAP
Nataliya [291]

Answer:

Can you just not be so desperate please?

5 0
3 years ago
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Por favor me puede ayudar ​
Eduardwww [97]

<h2><u>POR FAVOR MARQUE BRAINLIEST!</u></h2>

<u></u>

Answer:

Vamos a resolver!

Step-by-step explanation:

8 / 1/4 + 2 - 1/2 / 1/4

= (8 ÷ 0.25) + 2 - (0.5 ÷ 0.25)

= (8 ÷ 0.25) - (0.5 ÷ 0.25) + 2

= 32 - 2 + 2

= 30 + 2

= 32

Tu respuesta es 32 .

5 0
4 years ago
6th grade math help me please !
antiseptic1488 [7]

First we have to figure out how much 3 bags cost using the total cost of $8.25

That means. we would do 8.25/3 and 8.25 divide by 3 equals 2.75.

Now we know that each bag costs approximately $2.75

All we have to do now is multiply 2.75 by 4 to get the cost for the total of 4  bags.

4 times 2.75 is exactly 11 dollars, if might change if theres tax.

But, the answer would be 4 bags costs $11.

6 0
3 years ago
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