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4 years ago

Solve by completing the square: x^2 + 7x + 4 = 0

Mathematics

1 answer:

Len [333]4 years ago

5 0

Answer:

−

Add

to both sides of the equation.

To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of

(

)

(

)

Add the term to each side of the equation.

(

)

(

)

Simplify the equation.

Tap for more steps...

Factor the perfect trinomial square into

(

)

(

)

Solve the equation for

Tap for more steps...

√

−

The result can be shown in multiple forms.

Exact Form:

√

−

Decimal Form:

0.53112887

−

7.53112887

Step-by-step explanation:

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Max estimates 718 - 331 by rounding each number to the nearest 100 what is Max estimate of the difference?

Rainbow [258]

Answer:

400

Step-by-step explanation:

718-331

= 387

Rounding off to the nearest hundredth the answer is 400

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3 years ago

Need help ASAP! Please help with the slope to this question m= <br> B=

Inessa [10]

y=mx+b

therefore m = 1/2

and b = -6

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3 years ago

you use 8 cups of flour to make 24 muffins. At that rate, how much flour will it take to make 30 muffins

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3 years ago

Read 2 more answers

The ordered pair(5,-3) is a solution to which of the following inequalities? a. y≥−2x+8 b. −2y<3x−9 c. y−2x>5 d. 4y+2x≤−1

stiks02 [169]

Answer:

Option d. $4y+2x\leq -1$

Step-by-step explanation:

we know that

If a ordered pair is a solution of an inequality, then the ordered pair must be satisfy the inequality

Verify each case

case a) $y\geq2x+8$

we have

$x=5, y=-3$

Substitute the value of x and the value of y in the inequality and then compare the results

$-3\geq2(5)+8$

$-3\geq18$ -----> is not true

therefore

the ordered pair is not a solution

case b) $-2y$

we have

$x=5, y=-3$

Substitute the value of x and the value of y in the inequality and then compare the results

$-2(-3)$

$6$ -----> is not true

therefore

the ordered pair is not a solution

case c) $y-2x>5$

we have

$x=5, y=-3$

Substitute the value of x and the value of y in the inequality and then compare the results

$-3-2(5)>5$

$-13>5$ -----> is not true

therefore

the ordered pair is not a solution

case d) $4y+2x\leq -1$

we have

$x=5, y=-3$

Substitute the value of x and the value of y in the inequality and then compare the results

$4(-3)+2(5)\leq -1$

$-2\leq -1$ -----> is true

therefore

the ordered pair is a solution

7 0

4 years ago