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konstantin123 [22]
3 years ago
12

Write the missing factor.

Mathematics
2 answers:
Juliette [100K]3 years ago
6 0

Hello from MrBillDoesMath!

Answer:

Choice D, d+5


Discussion:

(d+5) ( d-5) = d^2 - 25 so the answer is (d+5) or choice D



Thank you,

MrB

zlopas [31]3 years ago
5 0

Answer:

The correct answer is  Option C . d -5

Step-by-step explanation:

<u>Identity: </u>   (a + b)(a - b) = a² - b²it is given that,

it is given that,

(d - 5)(?) = d² - 25

LHS = (d - 5)(?)

RHS = d² - 25

we can compare this with the identity.

here, a = d and b = 5

therefore we can write and start with RHS

RHS =  d² - 25 = d² - 5²  = (d +5)<u>(d - 5) </u>= LHS

(d +5)<u>(d - 5)</u>  =    d² - 25

Therefore option C. (d- 5) is the correct answer.


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A study of the career paths of hotel general managers sent questionnaires to an SRS of 160 hotels belonging to major U.S. hotel
otez555 [7]

Answer:

(10.78483, 12.61517)

Step-by-step explanation:

It is given that the genera mangers of few hotels were sent some questionnaires for conducting a study for the career paths in the major hotel chains of the United States.

Number of hotels = 160

Number of response received = 103

The average number of years these general mangers was in their current hotels, $\bar x$ = 11.7 years

Confidence Interval, CI = 0.99

Therefore,

a = 0.01, |Z(0.005)|  (from standard normal table)

∴ 99% of CI =  $\bar x \pm Z \times \frac{s}{\sqrt n}$

                   $= 11.7 \pm 2.58 \times \frac{3.6}{\sqrt {103}}$

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3 0
2 years ago
In a pair of triangles, if two pairs of corresponding sides are proportional, and the angles in between the two pairs of corresp
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8 0
3 years ago
Read 2 more answers
Y=2x
Shalnov [3]

Step-by-step explanation:

By substitution method

6x+3(2x)=12

6x+6x =12

12x=12

x=1

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7 0
2 years ago
A bin contains 25 light bulbs, 5 of which are in good condition and will function for at least 30 days, 10 of which are partiall
Ira Lisetskai [31]

Answer:

The probability that it will still be working after one week is \frac{1}{5}

Step-by-step explanation:

Given :

Total number of bulbs = 25

Number of bulbs which are good condition and will function for at least 30 days = 5

Number of bulbs which are partially defective and will fail in their second day of use = 10

Number of bulbs which are totally defective and will not light up = 10

To find : What is the probability that it will still be working after one week?

Solution :

First condition is a randomly chosen bulb initially lights,

i.e. Either it is in good condition and partially defective.

Second condition is it will still be working after one week,

i.e. Bulbs which are good condition and will function for at least 30 days

So, favorable outcome is 5

The probability that it will still be working after one week is given by,

\text{Probability}=\frac{\text{Favorable outcome}}{\text{Total number of outcome}}

\text{Probability}=\frac{5}{25}

\text{Probability}=\frac{1}{5}

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3 years ago
ABCD FECG
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Answer:

x=12

Step-by-step explanation:

7 0
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