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lilavasa [31]
3 years ago
6

Which is f(5) for the function -2x2 + 2x - 3?

Mathematics
2 answers:
nexus9112 [7]3 years ago
8 0

Answer:

f(5) = - 43

Step-by-step explanation:

f(x) =  - 2 {x}^{2}  + 2x - 3 \\ plugging \: x = 5 \\ f(5) =  - 2( {5})^{2}  + 2 \times 5 - 3 \\  \hspace{20 pt} =  - 2 \times 25 + 10 - 3 \\  \hspace{20 pt}=  - 50 + 7 \\   f(5) =  - 43

aksik [14]3 years ago
5 0

Answer:

-43

Step-by-step explanation:

-2x2 + 2x - 3?

Let x = 5

-2 (5)^2 +2(5) -3

-2 (25) +10 -3

-50 +10 -3

-43

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Tony’s club is selling oranges to raise money. For every box they sell, they get 1 1/8 dollars profit. They have sold 75 boxes a
Luden [163]
1\frac{1}{8} =  \frac{9}{8} = 1.125, 
 \\ 75*1.125= 84.375

84.375 is the profit ALREADY made, so now subtract that from 180 dollars to get
95.625 $ needed, now divide by amount of profit per box...

Answer should be 85 boxes

4 0
3 years ago
Best explained and correct answer gets brainliest.
ELEN [110]

3275 = x * (1+0.075/12)^(12*10)

3275 = x * (2.11206463)

x= 3275/2.11206463 = 1550.6154

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8 0
3 years ago
How many litres of milk can be put in six hemispherical bowl each of diameter 35cm​
Lesechka [4]

Answer:

Approximately 67.348 litres can be put in six hemispherical bowl with a diameter of 35 centimetres.

Step-by-step explanation:

The volume of a hemisphere (V), measured in cubic centimetres, is obtained from this formula:

V = \frac{2\pi}{3}\cdot R^{3}

Where R is the radius of the hemisphere, measured in centimetres.

We know that radius is the half of the diameter (D), measured in centimetres, then:

R = 0.5\cdot D

(D = 35\,cm)

R = 0.5\cdot (35\,cm)

R = 17.5\,cm

Now, we get the volume of each hemispherical bowl:

V = \frac{2\pi}{3} \cdot (17.5\,cm)^{3}

V \approx 11224.649\,cm^{3}

The total volume of six hemispherical bowl is:

V_{T} = 6\cdot V

V_{T}= 6\cdot (11224.649\,cm^{3})

V_{T} = 67347.894\,cm^{3}

From Physics we know that 1 litre equals 1000 cubic centimetres. Then:

V_{T} = 67.348\,L

Approximately 67.348 litres can be put in six hemispherical bowl with a diameter of 35 centimetres.

3 0
3 years ago
Help with geometry! ! !! ! !
snow_lady [41]

Answer:

RST

Step-by-step explanation:

Look at the angles for M, N and O. They are equal to 79, 60, and 42 degrees, respectively. Now look at the triangle to the right of triangle MNO. In what order should we line up the letters so that the angles for that triangle should also equal 79, 60 and 42 degrees? If you look at it for a second, you should that this problem is easy to solve! Did you get it right! That's right, by lining up the angles in the order RST, the measure of each angle is equal to the measures of MNO.

Give me Brainliest and have a great day! :)

Cheers!

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