Answer:
infinitely many solutions
Step-by-step explanation:
We want to find solution to the system:
-4y=-20x+40
y+10=5x
We make y the subject in the second equation to get;
y=5x-10
We substitute y=5x-10 into the top equation to get:
We expand to obtain;
This implies that:
Therefore the system has infinitely many solutions.
Answer:
Dependent sample: The same textbook are being compared.
Step-by-step explanation:
We are given the following in the question:
A student wants to compare textbook prices for two online bookstores.
Sample 1 from bookstore A:
$115, $43, $99, $80, $119
Sample 2 from bookstore B:
$110, $40, $99, $69, $109
Dependent and independent sample:
- Dependent samples are paired observations for same set of items.
- Independent samples are observations made on two different sets of items.
- If the values in one sample affect the observations in the other sample, then the samples are dependent.
- If the values in one sample have no effect about those of the other sample, then the samples are independent.
Thus, the given sample is dependent sample as the same textbook is being compared from two different bookstore.
Answer:
It would be B. 6 units because you must multiply 3 and 2.
Answer:
17 <u>1</u>
3
Step-by-step explanation:
= <u>67</u><u>5</u>+ <u>3</u> x = <u>53</u>
100 8 4
------------------------- × 1000
6,750+ 375x = 13,250
375x = 6,500
x = <u>6</u><u>,</u><u>5</u><u>0</u><u>0</u> = <u>2</u><u>6</u><u>0</u> = <u>5</u><u>2</u> = 17 <u>1</u>
375 15 3 3
28 x 6 = 168 hours
168 x 9 = $1512
hope this helps x
