I have a math final tomorrow and I don’t know how to do this. Someone please help!

Answers

Answer 1

Answer: 135+105=240
Divide by 2
120
Then 180-120=60

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X = y - 3x + 3y = 13 What is the solution to the system of equations? A) (1, 4) B) (4, 1) C) (7, 4) D) (2.5, 5.5)
Kendra has a bowl containing 10 blue marbles, 15 yellow marbles, 5 green marbles, and red marbles of the same size. She will randomly put out a marble, keep it outside the bowl, then pull out another marble.What is the probability she will draw a red marble and then a yellow marble? 1/14 5/72 1/18 3/20
A line has slope 2/3 and y-intercept -2. Which answer is the equation of the line?A) y=2x+2/3B) y= -2x+2/3C) y=2/3x+2D) y=2/3x -2
I don't know why I can't think (maybe because its late) but can someone answer this along with a clear explanation? Thanks
Solve for x. -3x + 4 = -8

Preform the indicated operation. Write your answer in proper a + bi form.HELP!!
(4 +√-6) + (8-√-294) -(21 + √-216)

Answers

$(4 +√(-6)) + (8-√(-294)) -(21 + √(-216))=\n4+\sqrt6i+8-7\sqrt6i-21-6\sqrt6i=\n-9-12\sqrt6i$

Renauld has to pay 2 percent in closing costs and 14 percent for the down payment on a purchase of $170,500. Over the life of his loan, he will pay $163,021.87. What is the total cost of his house?. A. $166,431.87. B. $186,891.87. C. $190,301.87

Answers

The correct answer is:

C. $190,301.870.

Explanation:

Paying 14% down is 0.14(170500) = $23,870.

2% closing costs are 0.02(170500) = $3410.

Adding these to the amount he pays on the loan, $163,021.87, we have:

163021.87+23870+3410 = 190301.87

The totalcost of Renauld’s house is $190,301.87. The technique here is to know the value of the closingcosts and the down payment so the correct answer between all the choicesgiven is the last choice or letter C. I am hoping that this answer hassatisfied your query about this specific question.

An astronaut spends 53% of the day working, 0.1 of the day eating, 3/10 of the day sleeping, and the rest of the day exercising. Order the events by duration from least to greatest.

Answers

Answer:

0.1 of the day eating; 3/10 of the day sleeping; 53% of the day working

Step-by-step explanation:

convert all to decimals

0.1=0.1

3/10=0.3

53%=0.53

least to greatest= 0.1, 0.3, 0.53

Solve 3x2 + 12x = 3.

Answers

Answer:

The solutions to the quadratic equation are: $x=-2+√(5),\:x=-2-√(5)$

Step-by-step explanation:

To solve the quadratic equation $3x^2+12x=3$ you must:

Subtract 3 from both sides and simplify

$3x^2+12x-3=3-3\n\n3x^2+12x-3=0$

For a quadratic equation of the form $ax^2+bx+c=0$ the solutions are

$x_(1,\:2)=(-b\pm √(b^2-4ac))/(2a)$

$\mathrm{For\:}\quad a=3,\:b=12,\:c=-3$

$x=(-12+√(12^2-4\cdot \:3\left(-3\right)))/(2\cdot \:3)=(-12+√(180))/(2\cdot \:3)=(-12+6√(5))/(6)=(6\left(-2+√(5)\right))/(6)=-2+√(5)$

$x=(-12-√(12^2-4\cdot \:3\left(-3\right)))/(2\cdot \:3)=(-12-√(180))/(2\cdot \:3)=(-12-6√(5))/(6)=-(6\left(2+√(5)\right))/(6)=-2-√(5)$

The solutions to the quadratic equation are:

$x=-2+√(5),\:x=-2-√(5)$

$3 x^(2) + 12x = 3$
$3 x^(2) + 12x - 3 = 0$
Using the quadratic formula
$x = \frac{-b (+ or -) \sqrt{b^(2 - 4ac) } }{2a}$
$x = \frac{-12 + \sqrt{12^(2 - 4(3)(-3)) } }{2(3)}$ OR $x = \frac{-12 - \sqrt{12^(2 - 4(3)(-3)) } }{2(3)}$
$x = (-12 + √(180) )/(6)$ OR $x = (-12 - √(180) )/(6)$
∴ x = 0.236 and x = -4.236

What adds to 6 and multiplies to 20

Answers

Add 4 which equals to 10 then multiply by 2 then that equals 20!

If 1 gallon equals 3.8 liters, how many liters are in 12 gallons? Round your answer to the nearest tenth.