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3 years ago

Find the sum. A. 4x2 – x – 5 B. 10x2 + 7x – 5 C. –10x2 + 7x + 11 D. 4x2 + x – 11

Mathematics

1 answer:

Kobotan [32]3 years ago

7 0

Answer:

Step-by-step explanation:

7x² - 4x - 8 - [ -3x² - 3x - 3]

In subtraction, flip the sign of all terms in the minuend

7x² - 4x - 8

3x² + 3x + 3

4x² - x - 5

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A circle is entered on the point (-1,5) and contains the point (7,11). What is the area of this circle?

bezimeni [28]

The answer is 100.

Step-by-step explanation:

Given:

A circle is centered on the point(-1,5) and contains the point(7,11)

To find:

Area of a circle.

Formula:

(x – a)2 + (y – b)2 = r2

Solution:

D(A,B)=√ (xa − xb)2 + (ya − yb)2

D(A,B)=√ (7 + 1 )2 + (11− 5)2

D(A,B)=√ (8 )2 + (6)2

D(A,B)=√ 100

D(A,B)=10

Substituting in the above equation

(x + 1 )2 + (y – 5)2 = 100

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2 years ago

30 Points: How does it relate to one of these?

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Answer: the square of the length of the longest side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle.

Step-by-step explanation:

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2 years ago

How do we find the value of y when x = 0

ratelena [41]

Answer:

both variables are just 0-

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3 years ago

What is the area of the figure?

Novay_Z [31]

Answer:

267 in. squared

Step-by-step explanation:

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3 years ago

Read 2 more answers

6. Write an equation of a line that is Parallel to the line: y = 3x -3

jeka94

Answer:

3x - y -6 = 0

Step-by-step explanation:

We need to find the Equation of the line parallel to the given equation of line . The given equation of the line is ,

$\rm\implies y = 3x - 3$

Slope Intercept Form :-

$\rm\implies y = mx + c$

where ,

m is slope
c is y intercept .

Therefore , the Slope of the line is 3 . Let the parallel line passes through ( 3,3) . We know that the parallel lines have same slope . Therefore the slope of the parallel line will also be 3 .

Using point slope form :-

$\rm\implies y - y_1 = m ( x - x_1) \\\\\rm\implies y - 3 = 3( x - 3 ) \\\\\rm\implies y -3 = 3x -9 \\\\\rm\implies 3x -y -9+3=0\\\\\rm\implies \boxed{\rm\red{ 3x -y -6=0}}$

3 0

3 years ago