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MAVERICK [17]
3 years ago
14

Item

Mathematics
1 answer:
goblinko [34]3 years ago
8 0
C is the answer 12 marbles and 20 marbles
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Suppose an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline that
MissTica

Answer:

4.07

Step-by-step explanation:

The sample size is 12. The number of treatments is 4. Thus, the degrees of freedom associated with the sum of square error is 8 which is sample size minus number of treatments. The degree of freedom is 3 which is number of treatments minus 1. The theoretical F value is determined by entering the F table (pp.723-24) at 3 degrees of freedom for the numerator and 8 degrees of freedom for the denominator for the level of significance given which in this case is 0.05.

4 0
3 years ago
What is the algebraic expression for this; the value in cents of an unknown number of dimes
Murrr4er [49]

Answer:

X dimes= 10 * X cents

Step-by-step explanation:

Let us suppose that We have X number of dimes

Now from Monetary rules we know that

1 dime = 10 cents  ............(i)

Now if we will have

2 dime = 20 cents

2 dime = 2 * 10 cents  .....(ii)

from (i) and (ii) we see that if we have X dimes then

X dimes= 10 * X cents

8 0
3 years ago
It took a car 4 days to travel 4717 miles. What was this car’s average speed, in miles per hour? (Round to the nearest per hour)
KiRa [710]

Answer:

51 MPH

Step-by-step explanation:

4 days is 96 hours, all you have to do is 4717/90

which is 51.41111 (with the 1 repeating) rounded to the nearest MPH (Nearest whole number) is 51

4 0
2 years ago
I need to figure out how many solutions does the system of equations below have.
Aleonysh [2.5K]

Answer:

The system has one solution.

Step-by-step explanation:

To find the number of solutions of the system, we equal both equations for y.

If we have ax = b, in which both a and b are different of 0, we have one solution.

If both a and b are 0, we have infinite solutions.

If a is 0 and b is not, there are no solutions.

y=6/7x-8 and y=7/9x+10/9

So

\frac{6x}{7} - 8 = \frac{7x}{9} + \frac{10}{9}

\frac{6x}{7} - \frac{7x}{9} = \frac{10}{9} + 8

\frac{54x - 49x}{63} = \frac{10}{9} + \frac{72}{9}

\frac{5x}{63} = \frac{82}{9}

45x = 63*82

Both a and b are different of 0, so the system has one solution.

6 0
2 years ago
Please I need help I’m being timed.please
Sindrei [870]

Answer:

C, D, and E

Step-by-step explanation:

85-20=65

t>65

This means all the numbers greater than 65.

Do not include 65 because it is not a greater than or equal to symbol.

Hope this helps!

If not, I am sorry.

8 0
2 years ago
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