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Andrews [41]
3 years ago
8

1. x² - 1 + y(y - 2x)​somebody plz help meeeeeeeeeeeeeeeeeeeeeee

Mathematics
2 answers:
Nostrana [21]3 years ago
5 0


Step1:Multiply each term in the parentheses by y.


Step2: calculate the product

lawyer [7]3 years ago
4 0

Answer:

{(x + y)}^{2}  - 1

Step-by-step explanation:

{x}^{2}  + y(y - 2x) - 1

{x}^{2}  +  {y}^{2}   - 2xy - 1

Using the identity (a - b)^2 here ,

{(x + y)}^{2}  - 1

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PLZ HELP ME! THIS IS A GRADE! NO LINKS!
Shtirlitz [24]

Answer:

see explanation.

Step-by-step explanation:

2(10 * 4 * 7) is a surface area.

7 * 4 * 10 is volume.

2(10 * 4 + 10 * 7 + 4 * 7) is surface area.

10 + 4 + 7 is neither.

2 * 7 * 4 + 2 * 10 * 7 + 2 * 4 * 10 is neither.

hope this helps.

8 0
2 years ago
Round 92.471 to the nearest tenth
olga55 [171]
The answer would be 92.5.

The 4 is the tenth
The 7 is the hundredth
The 1 is the thousandth
3 0
3 years ago
Read 2 more answers
multiply an odd number by an odd gives an even number. Is it certain, likely, even, unlikely or impossible.
Korvikt [17]
It Is Very Impossible
6 0
3 years ago
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Suppose 12% of the students chose to study French their freshman year, and that meant that there were 21 such students. How many
AleksAgata [21]

Answer:

154 students

Step-by-step explanation:

First get the total number of students .

This can be gotten by

12% of A = 21

Where A represents the total number of students.

12% represents the % of A that chose to study French and 21 is the number of students that studied French .

Therefore,

12% /100% x A = 21

0.12 x A = 21

Divide both sides by 0.12

0.12/0.12 x A = 21/0.12

A = 175

The total number of students is 175.

If 21 chose to study French their freshman year ,number of students that chose not to will be total number of students minus number of those who chose to study French.

That’s

175 - 21

= 154

154 students chose not to study French their freshman year

4 0
3 years ago
What is the research hypothesis when using anova procedures?
Pachacha [2.7K]

When using ANOVA procedures, the research hypothesis is: there is no significance difference within the mean values of the groups.

<h3>What is a Research Hypothesis in ANOVA Procedure?</h3>

ANOVA procedure compares the mean values of different groups that are administered with treatments. The research hypothesis, such as the null hypothesis would be stated as: no significance difference in the mean values within the groups.

Thus, we can conclude that the research hypothesis when using the ANOVA procedures can be stated as a null hypothesis, which states that: there is no significance difference within the mean values of the groups.

Learn more about research hypothesis on:

brainly.com/question/20700422

#SPJ12

5 0
2 years ago
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