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2 years ago

6

in a box of thermometers 12% of them are broken and 66 are in good condition find a total number of the thermometers in the box.

1 answer:

Mama L [17]2 years ago

4 0

Answer:

75

Step-by-step explanation:

100% - 12% = 88% (% of good thermometers)

88% = 66

100% = 75 (total)

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Alex buys a top of the line computer. He did not realize that the computer would lose value so fast. If his computer cost $1800.

Natali [406]

This can be solve by using the formula

D = P( 1 – i)^n

Where d is the depreciation value after n years

P is the initial value

i is the depreciation rate

n is the years

D = 1/3 ( 1800)

D = 600

So

600 = 1800 ( 1- 0.45)^n

Solve for n

<span>N = 1.83 years</span>

3 0

2 years ago

What is sams ratio of free to paid minutes

Scilla [17]

Well, if Pablo gets 1 free minute for every 5 paid,
then he would get 8 free minutes for every 40 paid,
Sam is getting only 25 paid minutes for every 8 free ones

5 0

3 years ago

Place the quadratic y=2x^2+24x+79 into vertex form by using the method of completing the square and then state the coordinates o

katrin2010 [14]

Answer:

$y=2(x+6)^2+7$

$(-6,7)$

Step-by-step explanation:

$y=2x^2+24x+79$

Completing the square is a process of converting a quadratic equation in standard form into vertex form.

The first step in completing the square is grouping the quadratic and linear terms of the quadratic equation.

$y=(2x^2+24x)+79$

Factor out the coefficient of the quadratic term,

$y=2(x^2+12x)+79$

Now complete the square, add a term to make the grouped part of the equation a complete square, then balance the equation.

$y=2(x^2+12x+36-36)+79$

Simplify,

$y=2(x^2+12x+36)+79+(2)(-36)$

$y=2(x+6)^2+79-72$

$y=2(x+6)^2+7$

The x-coordinate of the vertex of the equation is equal to (-1) times the numerical part of the quadratic term, and the y-coordinate is equal to the constant.

$(-6,7)$

7 0

2 years ago

Factor the expression.

valentinak56 [21]

It is (d+5)(d+5) because 5•5 is 25 and 5+5 is 10

4 0

3 years ago

I only need help with 15,16,17,18 please help me

blagie [28]

Okay, so to find like denominators you need to find a number that both denominators go into. For 15, they both go into 45. 9 goes in 5 times and 15 goes in 3 times. So multiply their numerators by 5 and 3. It would be 25/45 for 5/9 and it would be 12/45 for 4/15. Do the same for 16 and 17, for 16 they both go into 42 and for 17 they both go into 42.

7 0

3 years ago

Read 2 more answers