1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
photoshop1234 [79]
3 years ago
11

True or false..How do I know if it's no solution

Mathematics
1 answer:
Misha Larkins [42]3 years ago
4 0

Answer:

False

Step-by-step explanation:

If (8,9) is a solution, you will be able to substitute 8 for x, and 9 for y.

(-2 x 8) + (4 x 9) = -20?

-2 x 8 = -16

4 x 9 = 36

-16 + 36 = 20

So, (8,9) is not a solution to the system.



You might be interested in
You are curious about the average number of yards Matthew Stafford throws for each game for the Detroit Lions. You randomly sele
Damm [24]

Answer:

The margin of error for this estimate is of 14.79 yards per game.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

T interval

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.093

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample.

You randomly select 20 games and see that the average yards per game is 273.7 with a standard deviation of 31.64 yards.

This means that n = 20, s = 31.61

What is the margin of error for this estimate?

M = T\frac{s}{\sqrt{n}}

M = 2.093\frac{31.61}{\sqrt{20}}

M = 14.79

The margin of error for this estimate is of 14.79 yards per game.

3 0
3 years ago
I really need help please.
love history [14]

Answer:

64

Step-by-step explanation:

6 0
3 years ago
How many pounds per cup is shown in the proportional relationship below
Lilit [14]
4 pounds per 20 cups.
3 0
3 years ago
a rectangular tank is 3/4 filled with water, when the metal prism is placed in the tank, it is 79/100 full. find the width w of
Llana [10]
The volume of the prism ... L x W x H ... is 0.04 of the volume of the tank.
If the prism is rectangular, then its width is (0.04 of the volume of the tank) divided by (L x H of the prism) .
5 0
3 years ago
Algebra 1 homework <br><br> Helpppp
Igoryamba

Answer: It should actually be 9b6/a4c6

Step-by-step explanation: bc ur simplifying the equation.

4 0
3 years ago
Other questions:
  • Please help me... the perimeter of square WXYZ is 20 units. The coordinates of three of the vertices are W(3,2), X(3,7), and Y(8
    14·1 answer
  • The time (t) in hours and distance (d) in miles are related by d = 45t. Identify the independent and dependent variables.
    11·1 answer
  • 1.A rectangle is 6 inches longer than its wide.Write and simply an expression for the perimeter of the rectangle.
    5·1 answer
  • A parabola can be drawn given a focus of (8, -5) and a directrix of y=-3 . What can be said about the parabola?
    8·1 answer
  • What is your favorite rapper or singer???? and what is 1 + 21????? I need help
    5·2 answers
  • Two roommates, roommate X and roommate Y, are expecting company and are arguing over who should have to wash the dishes before t
    9·1 answer
  • Tyler has to savings accounts that his grandparents opened for him . One of the accounts Pay 8% annual interest Where as the oth
    9·1 answer
  • Which product is greater than 3/5<br><br> Look at the picture ☺️<br> Pls answer ASAP✨
    12·1 answer
  • I will mark brainly, help me with this question please.​
    10·1 answer
  • Which polynomial is a quintic binomial?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!