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2 years ago

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Solve this equation using the most direct method: 3x(x + 6) = -10 Enter your solution in the exact, most simplified form. If the

re are two solutions, write the answer using the ± symbol. Describe and justify the methods you used to solve the quadratic equation.

1 answer:

Dvinal [7]2 years ago

7 0

The answer is X = -5.38

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PLEASE HELP<br> I have no idea how to do this

tresset_1 [31]

Answer:

1st 2nd or both's answer you want

7 0

2 years ago

Instructions: Use the ratio of a 30-60-90 triangle to solve for the variables.

Pepsi [2]

Answer:

$x=20$

$y=10\,\sqrt{3}$

Step-by-step explanation:

In the triangle we have the following trigonometric equations:

$tan(60^o)=\frac{opposite}{adjacent} \\\sqrt{3} =\frac{y}{10} \\y=10\,\sqrt{3}$

and also:

$cos(60^o)=\frac{adjacent}{hypotenuse}\\\frac{1}{2} =\frac{10}{x}\\x=20$

8 0

2 years ago

If $1000 is invested at 8% interest, compounded annually, then after n years the investment is worthan = 1000(1.08)ndollars.(a)

Luba_88 [7]

Answer:

Diverge

Step-by-step explanation:

(a)

1st year: $1000 * 1.08^1 = \$1080$

2nd year: $1000 * 1.08^2 = \$1166.4$

3rd year: $1000 * 1.08^3 = \$1259.71$

4th year: $1000 * 1.08^4 = \$1360.49$

5th year: $1000 * 1.08^5 = \$1469.33$

(b) The sequence is divergent, because if we take the derivative of the function with respect to n year:

$(1000*1.08^n)^{'} = 1000ln(n)*1.08^n$

This is a positive, meaning the slope of the function is positive. If we take the second derivative using product rule

$(1000ln(n)*1.08^n)^{'} = 1000\frac{ln(n)}{n}1.08^n$

This is also positive when n > 0. Therefore, the slope is positive and increasing. This means the sequence diverges.

5 0

2 years ago

TV and YW are parallel lines.

Lemur [1.5K]

Answer: C, WXZ and WXU are adjacent angles.

Step-by-step explanation:

A is incorrect because TUX and VUS are vertical angles.

B is incorrect because YXZ and TUX have no relationship.

C is correct because WXZ and WXU are supplementary angles, thus adjacent.

D is inccorect because VUX and TUS are vertical angles.

6 0

2 years ago

–0.4(3x – 2) + StartFraction 2 x plus 4 Over 3 EndFraction for x = 4

Nadusha1986 [10]

Answer:

0

Step-by-step explanation:

Given

- 0.4(3x - 2) + $\frac{2x+4}{3}$ ← substitute x = 4 into the expression

= - 0.4(3(4) - 2) + $\frac{2(4)+4}{3}$

= - 0.4(12 - 2) + $\frac{8+4}{3}$

= - 0.4(10) + $\frac{12}{3}$

= - 4 + 4 = 0

4 0

2 years ago

Read 2 more answers