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3 years ago

13

In one week 97 cell phones were sold. The following week, 48 more cell phones were sold than the week before. How many cell phon

es were sold in those 2 weeks

1 answer:

baherus [9]3 years ago

8 0

145. 7 + 8 is 15 carry the 1, 9+4+1 is 14, so 145

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Solve the equation by completing the square and then solving for x. 1. x^2-6x=12<br>2. 2x^2-24x=-20

Paraphin [41]

Answer: (x - 3)² = 21

<u>Step-by-step explanation:</u>

x² - 6x + ____ = 12 + ____

↓ ↑ ↑

$\frac{-6}{2} = (-3)^{2}$

x² - 6x + <u> 9 </u> = 12 + <u> 9 </u>

(x - 3)² = 21

*******************************************************

Answer: (x - 6)² = 26

<u>Step-by-step explanation:</u>

2x² - 24x = -20

<u>÷2 </u> <u> ÷2 </u> <u> ÷2 </u>

x² - 12x = -10

x² - 12x + ____ = -10 + ____

↓ ↑ ↑

$\frac{-12}{2} = (-6)^{2}$

x² - 12x + <u> 36 </u> = -10 + <u> 36 </u>

(x - 6)² = 26

8 0

3 years ago

A cone is filled to a height of 3 inches with a liquid. The liquid is then poured into an empty cylinder with the same height an

Tasya [4]

Answer: 1 inch

Volume of the cylinder = πr²h

Volume of the cone = 1/3πr²h

If the radius are the same for both the cone and the cylinder, then the liquid will reach 1/3 of its height in the cylinder compared to the cone.

Height = 1/3 x 3 inches
Height = 1 inch

----------------------------------------------------------------------------------------
Answer: The height of the cylinder will be 1 inch.
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3 0

3 years ago

If the ceos salary of 1,000,000 is taken out of the list what I would happen to the mean and median 25,25,25,35,35,45,45,55,55

Mama L [17]

Answer:

Both the mean and median decrease.

Step-by-step explanation:

Median (without 1,000,000):

<em>25, 25, 25, 35</em>, 35,<em> 45, 45, 55, 55</em>

= 35

Median (with 1,000,000):

<em>25, 25, 25, 35</em>, 35, 45, <em>45, 55, 55, 1,000,000</em>

= average of 35 and 45

= 40

As you can see, without the outlier, the value of the median decreases.

Mean (without 1,000,000):

= (25 + 25 + 25 + 35 + 35 + 45 + 45 + 55 + 55) / 9

= 38.3

Mean (with 1,000,000):

= (25 + 25 + 25 + 35 + 35 + 45 + 45 + 55 + 55 + 1,000,000) / 10

= 100,0034.5

As you can see, without the outlier, the value of the mean dramatically decreases.

6 0

2 years ago

Francisco is building a window seat below a bay window in the shape of an isosceles trapezoid. His blueprint for the window seat

Lera25 [3.4K]

Answer:

A

Step-by-step explanation:

I think it is a because if you mutiply and you will get your answer

6 0

3 years ago

Read 2 more answers

A couple has 2 children. what is the probability that both are girls if the older of the two is a girl?

12345 [234]

Assuming that the probability of boys and girls is equal (in reality slightly more boys than girls are born), the probability is 1/2, simply because the older girl's gender is given and therefore not a part of the probability.

This question comes from the 'boy or girl paradox', a.k.a. the Mrs Smith Problem.

7 0

4 years ago