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snow_lady [41]
3 years ago
6

Which of the three equations have infinitely many solutions?

Mathematics
2 answers:
mina [271]3 years ago
6 0

Answer:

I need to know the questions luv.

Step-by-step explanation:

mr Goodwill [35]3 years ago
3 0

Answer:

Solving the three equations in part A showed that two equations have one solution and one equation has no solution. So, no equations have infinitely many solutions.

Step-by-step explanation:

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Can I get help plzzz
Katarina [22]

Answer:

A

Step-by-step explanation:

N = (-1, -1)

-1 + 1 = 0

-1 - 1 = -2

So the new coordinates are (0,-2), same with the other coordinates.

7 0
3 years ago
Find the 90% confidence interval for the population standard deviation given the following.
lions [1.4K]

Answer:

b. 2.01 < σ < 2.81

Step-by-step explanation:

The 90% confidence interval for the population standard deviation is calculated as:

\sqrt{\frac{(n-1)*s^{2} }{X^2_{\alpha/2 } } }    < σ < \sqrt{\frac{(n-1)*s^{2} }{X^2_{1-\alpha/2 } } }

Where n is equal to 51, s is equal to 2.34, \alpha is 10%, X^{2} _{\alpha /2} is the value for the Chi squared distribution with n-1 degrees of freedom that has a probability of \alpha /2 in the right tail and X^{2} _{1-\alpha /2} is the value for the Chi squared distribution with n-1 degrees of freedom that has a probability of 1-\alpha /2 in the right tail.

So, replacing n by 51, s by 2.34, X^{2} _{\alpha /2} by 67.50 and X^{2} _{1-\alpha /2} by 34.76, we get that the The 90% confidence interval is equal to:

\sqrt{\frac{(51-1)*2.34^{2} }{67.50} } } < σ <\sqrt{\frac{(51-1)*2.34^{2} }{34.76} } }

2.01 < σ < 2.81

5 0
3 years ago
Cody has $329.83 in his checking account. How much does he have in his account after he makes a deposit of $215.89 and then take
andrew11 [14]

Answer:

Step-by-step explanation:

if Cody has right now 329.83 dollars

make a deposit 329.83+215.89=545.72

takes out 125.15

545.72-125.15=420.57

4 0
3 years ago
A recipe uses 3 cups of milk to make 9 servings. If the same amount of milk is used for each serving, how many servings can be m
galben [10]

Answer:

24 servngs

Step-by-step explanation:

3 cups makes 9 servings.

The rate of servings to cups is 9 servings to 3 cups which is a unit rate of 3 servings per cup.

1 quart = 4 cups

2 quarts = 2 * 4 quarts = 8 cups

3 serviongs/cup * 8 cups = 24 servings

Answer: 24 servings

3 0
2 years ago
What is 3b to the second power minutes b, of b=5?
Sav [38]
(3b)^{2} - b
where
b = 5
is 220.
3 0
3 years ago
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