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Nikitich [7]
3 years ago
11

I really need help some one please

Mathematics
1 answer:
Alika [10]3 years ago
7 0
The factorization of A is y = (x - 8)(x + 7).
The factorization of B is y = (x + 1)(x - 4)(x - 5)

In order to find these, you must first find where each graph crosses the x-axis. In the first problem it does so at 8 and -7. In order to find the correct parenthesis for those, you need to write it out as a statement and then solve for 0. 

x = 8 ---> subtract 8 from both sides
x - 8 = 0
This means we use (x -  8) in our factorization. 

You then need to repeat the process until you have all the pieces. In the second problem, there will be 3 instead of 2 since it crosses the axis 3 times. 
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She bought <br> 314yards of fabric. Her total cost was $13. What was the cost per yard?
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Answer:

$24.15 (answer is rounded)

Step-by-step explanation:

314/13= 24.15

I also used a calculator

5 0
3 years ago
How do you solve interquartile range?
77julia77 [94]
By Hand
Step 1: 
Put the numbers in order.
1, 2, 5, 6, 7, 9, 12, 15, 18, 19, 27.

Step 2: 
Find the median.
1, 2, 5, 6, 7, 9, 12, 15, 18, 19, 27.

Step 3: 
Place parentheses around the numbers above and below the median. 
Not necessary statistically, but it makes Q1 and Q3 easier to spot.
(1, 2, 5, 6, 7), 9, (12, 15, 18, 19, 27).

Step 4: 
Find Q1 and Q3
Think of Q1 as a median in the lower half of the data and think of Q3 as a median for the upper half of data.
(1, 2, 5, 6, 7),  9, ( 12, 15, 18, 19, 27). Q1 = 5 and Q3 = 18.

Step 5: 
Subtract Q1 from Q3 to find the interquartile range.
18 – 5 = 13.
5 0
3 years ago
Read 2 more answers
allen has a debt of 500$.He owes equal amounts to 10 different people. Express his debt to one person as a negative number.
SOVA2 [1]
-50 because if he owes 10 different people the same amount it would be -50 because he owes them money
4 0
3 years ago
Nour drove from the Dead Sea up to Amman, and her altitude increased at a constant rate. When she began driving, her altitude wa
labwork [276]

Answer:

y = - 400 + 700x

Step-by-step explanation:

Nour's altitude increased at a constant rate from the Dead Sea up to Amman.

Initially, her altitude was 400 meters below from the sea level and then she arrived at an altitude was 1000 meters above sea level arrived to Amman, 2 hours later.  

So, she moves (400 + 1000) = 1400 meters in 2 hours.

Therefore, her rate of change of altitude is \frac{1400}{2} = 700 meters per hour.

Therefore, if y represents Nour's altitude in meters relative to the sea level after x hours then the relationship between the altitude and number of hours is given by  

y = - 400 + 700x  (Answer)

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3 years ago
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Answer:

Everything except 21/40. That is your ratio. The denominator always

6 0
3 years ago
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