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marissa [1.9K]
3 years ago
9

Please Help Timed Question. Picture provided below.

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0

Answer:

17.67 mpg

Step-by-step explanation:

The fuel efficiency is given by :

\eta=1.437+0.541\times s

We need to find the fuel efficiency for a speed of 30 mph

Put the value of s equals 30 mph in the above equation.

\eta=1.437+0.541\times 30\\\\\eta=17.67\ mpg

So, the required fuel efficiency is equal to 17.67 mpg.

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Tariq has a collection of 32 quarters that he wants to send to his cousin. What is the total weight of the quarters in kilograms
Mumz [18]

One quarter weighs about 5.67 grams.

5.67 x 32 = 181.44 grams

Grams to kg = .001

181.44 x .001 = .18144 kg

Answer: .18144 kg

7 0
3 years ago
3x^2+6x-9=0 complete the square
PolarNik [594]
You could simplify this work by factoring "3" out of all four terms, as follows:

3(x^2 + 2x - 3) =3(0) = 0

Hold the 3 for later re-insertion.  Focus on "completing the square" of x^2 + 2x - 3.

1.  Take the coefficient (2) of x and halve it:  2 divided by 2 is 1
2.   Square this result:  1^2 = 1
3.   Add this result (1) to x^2 + 2x, holding the "-3" for later:
                    x^2 +2x 
4    Subtract (1) from x^2 + 2x + 1:     x^2 + 2x + 1               -3 -1  =    0, 
       or      x^2 + 2x + 1 - 4 = 0
5.   Simplify, remembering that x^2 + 2x + 1 is a perfect square:

                        (x+1)^2 - 4 = 0

We have "completed the square."  We can stop here.  or, we could solve for x:  one way would be to factor the left side:

            [(x+1)-2][(x+1)+2]=0     The solutions would then be:

             x+1-2=0=> x-1=0, or x=1, and
             x+1 +2 = 0 => x+3=0, or x=-3.  (you were not asked to do this).


3 0
3 years ago
If A and B are independent events, then it must be true that P(ATB) = P(A).
bixtya [17]
Tbh ion even know ................
8 0
3 years ago
Can someone help me please
VashaNatasha [74]

Answer:

TQ = 10\sqrt{2}

Step-by-step explanation:

The diagonal divides the square into 2 right triangles with the diagonal being the hypotenuse.

Using Pythagoras' identity in triangle TPQ

TQ² = PQ² + PT²

TQ² = 10² + 10² = 100 + 100 = 200 ( take square root of both sides )

TQ = \sqrt{200} = \sqrt{100(2)} = \sqrt{100} × \sqrt{2} = 10\sqrt{2}

7 0
2 years ago
kyra is building a dollhouse . The carpet for the bedroom is 27 square inches the length of the bedroom is 6 inches how long is
sertanlavr [38]
27 inches/ 6 inches = 4.5 inches

The width is 4.5 inches
8 0
3 years ago
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