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3 years ago

Find the number to be added to complete the square x^2+6x-4

Mathematics

1 answer:

N76 [4]3 years ago

3 0

Assuming we want to factor the formula to (x+3)(x+3), you want to have a +9 where there is a -4 now. So you must add 13.

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It says simplify each expression

kupik [55]

a. -42 + (-17)

Note that one negative and one positive = negative

-42 + (-17) = -42 - 17 = -59

b. (-42)/(-7)

Note that when dividing or multiplying two negatives, the answer will be positive

(-42)/(-7) = 6

c. (-5)² = (-5)(-5) = 25

25 is your answer

hope this helps

3 0

3 years ago

Dakota earns the money shown in the table. After buying 4 chairs, she has $30 left. How much did Dakota pay for each chair

Fantom [35]

Answer: unknown (graph not shown)

Explanation: to work out the answer, you need to minus $30 from the amount of money Dakota earnt, and then divide that by 4 to find the amount of each chair.

3 0

4 years ago

What is the value of B in: (7.99-B)/B=1.63

mixer [17]

(7.99 - B)/B = 1.63
7.99 - B = 1.63B
1.63B + B = 7.99
2.63B = 7.99
B = 7.99 / 2.63
B = 3.04

5 0

3 years ago

93 divided by 3 using repeated subtraction

Naily [24]

93/3=31 Answer is 31

8 0

3 years ago

Read 2 more answers

Help me please I'm confused

Nimfa-mama [501]

Answer:

The point (x, y) = (3, -4) represents the solution of the given system of equations.

Please check the attached graph.

Step-by-step explanation:

Given the system of equations

$y\:=\:-\frac{3}{2}x\:-\:3$

$y\:=\:-x\:-\:1$

Please check the attached graph of the given system of equations

From the graph:

The red line represents the equation: $y\:=\:-\frac{3}{2}x\:-\:3$

The blue line represents the equation: $y\:=\:-x\:-\:1$

Point of Intersection:

We know that the point of intersection of two lines represents the solution of the system of equations.

It is clear from the attached graph that the two lines intersect at the point (-4, 3).

i.e. at x = -4, y = 3

Therefore, the point (x, y) = (3, -4) represents the solution of the given system of equations.

Please check the attached graph.

7 0

3 years ago