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Gre4nikov [31]
3 years ago
15

Please help with number 8. And if you can explain how you got the answer please do and I’ll give brainliest

Mathematics
1 answer:
ddd [48]3 years ago
6 0

Answer:

X=7.9

Y=7.9

Step-by-step explanation:

We have that x=y

And form Pythagoras theorem we have

5 \sqrt{5} =  \sqrt{x ^{2} + x ^{2}  }   \\ take \: the \: square  \: of \: the \: two \: sides \\ 125 = 2x ^{2}  \\ x {}^{2}  = 62.5 \\ x = 7.9

So x = y = 7.9

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Simplify the following expression and then write down the coefficient of x²: x² + x² + x² + x²
lapo4ka [179]

Answer:

The expression is 4x² and coefficient is 4.

Step-by-step explanation:

All have the same variables, x², so you add up together :

1{x}^{2}  +  1{x}^{2}  +  1{x}^{2}  +  1{x}^{2}

= 4 {x}^{2}

7 0
3 years ago
Determine the discount between the point(-4,2) and the line 4y=3×+6​
Savatey [412]

Answer:

d = 14/5

Step-by-step explanation:

The point (-4,2) means that;

At x = -4, y = 2

Now general form of a linear equation is;

Ax + By + C = 0

We are given;

4y = 3x + 6​

Rearranging to the form of a linear equation gives;

3x - 4y + 6 = 0

Thus, A = 3, B = -4 and C = 6

Thus, at point (-4,2), distance between them is;

d = (3(-4) - 4(2) + 6)/√(3² + (-4)²)

d = -14/5

We will take the absolute value.

Thus; d = 14/5

6 0
3 years ago
Write the expression -3x 2 + 2y 2 + 5xy - 2y + 5x 2 - 3y 2 in simplest form. Then, answer the following questions using complete
mart [117]
Combine like terms
assuming those 2s are exponents

-3x^2+2y^2+5xy-2y+5x^2-3y^2
move all x's together all y's together and all xy's together

-3x^2+5x^2+2y^2-3y^2+5xy
combne like terms
2x^2-y^2+5xy

3 terms
1 term is negative
5 0
4 years ago
Find the measure of an angle that is its own complement
sashaice [31]
A complement adds up to 90 degrees, so we just need to halve that, to get 45 degrees.
5 0
3 years ago
Solve the equation: x6=4.2
fomenos

Answer:

x * 6 = 4.2

x = 4.2 / 6 = 0.7

3 0
4 years ago
Read 2 more answers
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