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swat32
4 years ago
14

X-2y=4 x-2y=5 how many solutions does these equations have

Mathematics
1 answer:
cupoosta [38]4 years ago
6 0

Answer:

No solutions

Step-by-step explanation:

Rewrite x-2y=4 x-2y=5 in column form:

x-2y=4

x-2y=5

Because both equations have x - 2y on the left and different constants on the right, we know immediately that there is no solution.  These two lines are parallel and different; they never cross.

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One of Tyler’s chores is to feed the chickens. Two bags of chicken feed will last 5 days. How many days will 8 bags of chicken f
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Answer:

20days

Step-by-step explanation:

1 bag feed : 5/2 = 2.5 days

8 bags feed : 2.5*8 = 20 days

5 0
3 years ago
How can you generate x-3y+5 from the expression x+y+4+2y+1
vladimir2022 [97]

Answer: Here is the explanation. also it it +3y not -3y

Step-by-step explanation:

x+y+4+2y+1=x+3y+5 because

2y+y=3y

so now you have x+3y+4+1

4+1=5

now you have: x+3y+5

if you do not understand, What i am trying to say is, you need to add all of the same things.

3 0
4 years ago
Find the equation of the line that is perpendicular to 5x-6y=5, and passes through Point A (-1,1).
Lostsunrise [7]
The answer is 489.2
6 0
3 years ago
Read 2 more answers
When our brains store information, complicated chemical changes take place. In trying to understand these changes, researchers b
Rainbow [258]

Answer:

D) P-045 says that a response this small or smaller would be seen in sample data almost half the time when in fact there is no effect in the entire population of rats. That is, a response this size would often happen just by chance.

Step-by-step explanation:

The P-value represents the probability of getting the test sample results given that the null hypothesis is true.

A P-value that is low enough (smaller than the significance level) gives statistical evidence to support that the null hypothesis is not true.

In this case,  a P-value of 0.45 does not represent a strong evidence against the null hypothesis, as there is 45% of chances of getting this sample results if the null hypothesis is true.

In this case, as we talk about differences ("no difference was seen" between the two groups), we know that the sample difference has not been large enough to be proved statistically significant.

So the right answer is Option d).

8 0
3 years ago
If p=4 and q=2, evaluate the following expression:30/p+q​
Gelneren [198K]

Answer:

5

Step-by-step explanation:

Given

\frac{30}{p+q} ← substitute p = 4 and q = 2

= \frac{30}{4+2} = \frac{30}{6} = 5

7 0
3 years ago
Read 2 more answers
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