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Stella [2.4K]
2 years ago
8

I need help with elimination the equation is -3x + 2y= 7 and 4x + 4y= -6

Mathematics
2 answers:
LiRa [457]2 years ago
5 0

Answer:

reference attached

hope it helps you <3

Gre4nikov [31]2 years ago
5 0
Answer is (-2;1/2) i solved you can check below. I use elimination method for the solution.

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14. x 2 + 10x − 25 = 0
Natali [406]

think about two numbers that will get 25:

think about two numbers that will get 10

use the 5 times tables

5*5= 25

Use 5+5= 10

x^2+10x-25= 0

(x+5)(x+5)= 0

x+5= 0 , x+5= 0

x+5-5= 0-5

x= -5

x+5-5= 0-5

x= -5

Answer :

only x= 5

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PLEASE HELP DUE SOON! Find the area of the shaded region. Write your answer in exact form.
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Can you repost the picture I can’these it
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2 years ago
Three bags of wheat, two bags of corn, and one bag of oats weigh the same as one bag of wheat, one bag of corn and five bags of
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A bag of wheat equals 7 pounds


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The described situation requires inference about a mean or means. Identify the response variable and whether the setting involve
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

Hello!

The experiment was designed to proof if the physiological blind spot can be reduced with eye training.

One sample of n people was taken and the physiological blind spot was measured. After that, the people selected underwent 3 weeks of eye training and their physiological blind spot was measured again. At the end of the experiment you have two sets of data for the sample, let's call X₁: physiological blind spot of one person before taking eye training", the measurements were taken before the training will correspond to this variable, and X₂: physiological blind spot of one person after three weeks of eye training" the second measurements correspond to this variable.

In this type of situation, where only one sample is taken and both variables are measured to the same observational unit (there is a pair of observations for each person), the observations are dependant and the corresponding test is the paired samples t-test.

To analyze the information you need to create a new variable, usually symbolized as Xd, that will be the difference between X₁ and X₂.

So your response variable would be

Xd: "Difference between a physiological blind spot of one person before taking eye training and physiological blind spot of after three weeks of eye training"

Xd= X₁ - X₂

The study parameter will be the mean of the variable "difference" μd.

I hope it helps!

3 0
3 years ago
I WILL MARK BRAINEST!!! Someone please help me please!!! I rly need help with question 4, my friend and I both don’t understand
Brums [2.3K]

Answer:

The original number is (i)

The whole amount is (ii)

Step-by-step explanation:

So when finding a number in a percent you wanna see how much that percent will go into that number. So like if I said how many times does 60% go into 200 you would have to see how many times the number 200 would go into 60%. does this make sense? If so this is how you can find your answer.

Sorry if I'm wrong I hope you get this right!! Stay beautiful ❤️

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