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Lina20 [59]
4 years ago
13

Steps

Mathematics
1 answer:
slamgirl [31]4 years ago
5 0

Answer:

step 2

Step-by-step explanation:

Given

(2x - 3)(5x² - 2x + 7)

2x(5x² - 2x + 7) = 10x³ - 4x² + 14x ← step 1 is correct

- 3(5x² - 2x + 7) = - 15x² + 6x - 21 ← step 2 in her working is incorrect

Adding the results from step 1 and step 2

10x³ - 4x² + 14x - 15x² + 6x - 21 ← collect like terms

= 10x³ - 19x² + 20x - 21

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In addition to the blood types A, B, AB , and O, a person’s blood may be classified as Rh positive or Rh negative. In the United
VARVARA [1.3K]

Answer:

D. Assign the integers 00 through 84 to people with Rh positive blood and the integers 85 through 99 to people with Rh negative blood.

Step-by-step explanation:

If you want to simulate a percentage, you need to have 100 possible events. If you use 1-100, the range will be 1-85 for positive and 86-100 for negative. Looking at the option its all using 99 as the ceiling, so we use 0-99. Since we use 0, then you have to subtract 1 on the number range. There are 85% chance of Rh-positive, so the assigned number will be  

1 through 85

(1-1) through (85-1)

0 through 84

The range for Rh-negative will be:

86 through 100

86-1 through  100-1

85 through 99

Option B is wrong because it assigns 00 through 84 to people with Rh negative blood, not Rh-positive. The right answer will be option D.

7 0
3 years ago
The population of camden, New Jersey has been decreasing by 0.12% a year on average. If this trend continues, and the population
Talja [164]
By the trend that is being given above, the population of New Jersey will only be 99.88% of the population from the previous year. It may be calculated through the following equation,
                               P(n) = P(0) x (1 - r)^n
Substituting the values from the given above,
                                  P(n) = 79,318 x (0.9988)^(2015 - 2006)
                                          = 78465.47
Thus, the population will approximately be 78,466. 
4 0
3 years ago
!!!PLEASE HELP!!!<br> !!!PLEASE HELP!!!<br> !!!PLEASE HELP!!!
vichka [17]

Answer:

Sorry can not see the pic write it down so i can solve it for you

Step-by-step explanation:

7 0
4 years ago
If a is 3 and b is 6 therefore c is<br>​
Nesterboy [21]
C = 9 because its counting by 3’s
3 0
3 years ago
NO LINKS OR ANSWERING WHAT YOU DON'T KNOW?
snow_lady [41]

Answer:

1. D. 1

2. B. y=a³/x

3. A. y=1/x

Step-by-step explanation:

too long to give te explanations but they're there in the attachments

7 0
3 years ago
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