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3 years ago

How do i rewrite y=8 (x - 5) (x +2) in standard form

Mathematics

1 answer:

Komok [63]3 years ago

6 0

Answer:

Its already in standard form. LoL

Step-by-step explanation:

y=(x−5)(x+2)

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A library ordered 956 new books. They ordered 12 times as many mystery books as romance. They ordered 52 more science fiction bo

Nataly_w [17]

Answer:

Romance books ordered = 65

Mystery books ordered = 775

Science Fiction book Ordered ≈ 116

Step-by-step explanation:

Total number of books ordered in the library = 956

Let us assume the number of romance books ordered = m

⇒Number of mystery books ordered = 12 x (Number of romance books)

= 12 x(m) = 12 m

Also,number of science books ordered = 52 +(Number of romance books)

= 52 + m

Now, according to the question:

Number of { romance books + mystery books + science books} = 956

or, m + ( 12 m ) + (52 + m) = 956

or, 14 m = 956 - 52

or, 14 m = 904

⇒ m = 904/ 14 = 64.6

So, the number of romance books ordered = 64.6 ≈ 65

Number of mystery books ordered = 12 m = 12 x 64.5 = 775

Number of science fiction book ordered = = 52 + m = 116.6 ≈ 116

7 0

3 years ago

The standard deviation of quiz scores is 5.6. Describe the quiz scores

Lyrx [107]

We have been given a table of quiz scores whose standard deviation is 5.6. We are asked to find the test scores that are within one standard deviation of the mean.

First of all, we will find the mean of the test scores using average formula.

$\text{Average}=\frac{\text{Sum of data points}}{\text{Number of data points}}$

$\text{Average}=\frac{25+13+16+30+27+22+19+22+15+28+27+29}{12}$

$\text{Average}=\frac{273}{12}$

$\text{Average}=22.75$

The scores within one standard deviation would be mean plus one SD and mean minus one SD that is:

$22.75-5.6\text{ and } 22.75+5.6$

$17.15\text{ and } 28.35$

Therefore, the quiz scores 17.15 and 28.35 are within one standard deviation of the mean.

7 0

4 years ago

Keith Rollag (2007) noticed that coworkers evaluate and treat "new" employees differently from other staff members. He was inter

gayaneshka [121]

Answer:

a) Real range of employees hired by each organization surveyed = 56

b) The cumulative percent of "new" employees with the lowest tenure = 30%

Step-by-step explanation:

a) Note: To get the real range of employees hired by each organization, you would do a head count from 34 to 89 employees. This means that this can be done mathematically by finding the difference between 34 and 89 and add the 1 to ensure that "34" is included.

Real range of employees hired by each organization surveyed = (89 - 34) + 1

Real range of employees hired by each organization surveyed = 56

b) It is clearly stated in the question that the "new" employee status was mostly reserved for the 30% of employees in the organization with the lowest tenure.

Therefore, the cumulative percent of "new" employees with the lowest tenure = 30%

7 0

3 years ago

The number of hours (H) that it takes to paint a fence increases when the length of the fence (L) increases. Write the correct e

Sophie [7]

Answer:

H= .2L; H= .4

Step-by-step explanation:

3 0

4 years ago

At a carnival, Tammy bought 9 packs of 17 tickets each. She has used 36 of the tickets so far. How many tickets does she have le

Igoryamba

117 tickets
You multiply the packs of tickets times the number of tickets per pack which will tell you how many tickets she has in total, 9*17=153 then subtract how many tickets she used from the total number of tickets. 153-36 then you will your answer

6 0

3 years ago