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skad [1K]
2 years ago
10

PLEASE HELP

Mathematics
1 answer:
ale4655 [162]2 years ago
7 0

y =  - 3x^{2}  + 18x + 10 \\  \frac{d}{dx}( - 3x^{2}  + 18x + 10) \\  - 6x + 18 = 0 \\  - 6x =  - 18 \\ x = 3

The axis of symmetry for parabola is x = 3.

Using derivative to solve for axis od symmetry is easier.

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Some one help me with this.
solniwko [45]

Answer: the last one I think

no sure sorry

Step-by-step explanation:

6 0
3 years ago
1/3 cup of flour is used to make 5 dinner rolls.
RoseWind [281]

we know that

\frac{1}{3} cup of flour is used to make 5 dinner rolls.

Part a) How much flour is needed to make one dinner roll?

by using proportion

\frac{\frac{1}{3}}{5}  =\frac{x}{1} \\ \\ x=\frac{\frac{1}{3}}{5}\\ \\ x=\frac{1}{15}

therefore

the answer Part a) is

To make one dinner roll is needed \frac{1}{15} cup of flour

Part b) How many cups of flour are needed to make 3 dozen dinner rolls?

Multiply the value obtained in part a) by 36

so

\frac{1}{15} *36=\frac{36}{15} \\ \\ =\frac{12}{5}

\frac{12}{5} =2\frac{2}{5}

therefore

the answer Part b) is

To make 3 dozen dinner rolls are needed 2\frac{2}{5} cup of flour

Part c) How many rolls can you make with 5 2/3 cups of flour?

5\frac{2}{3} =\frac{17}{3}

by using proportion

\frac{\frac{1}{3}}{5}  =\frac{\frac{17}{3}}{x} \\ \\ \frac{x}{3} =\frac{85}{3} \\ \\ x=85

therefore

the answer part c) is

85 rolls

6 0
3 years ago
Read 2 more answers
Jeremy walked 6/8 of the way to school and ran the rest of the way. What fraction, in simplest form, shows the part of the way t
tia_tia [17]
The fraction that shows how much Jeremy walked in simplest is 3/4. Hope it helps:)
5 0
3 years ago
Paul and Tom both commute to work. Paul's commute on the train takes 15 minutes more than one third as many minutes as Tom's com
Ronch [10]

Answer:

  45 = (one third)x + 15

Step-by-step explanation:

If x represents the number of minutes Tom commutes, then (1/3)x is "one-third as many minutes as Tom's commute." 15 minutes more than that is ...

  (1/3)x + 15

We are told this is the length of Paul's commute, and that it is 45 minutes. So, the appropriate equation is ...

  45 = (1/3)x +15

8 0
3 years ago
B) Write 25 x 10^6 in standard form.
AURORKA [14]

Answer:

25,000,000

Step-by-step explanation:

Hope this helps!!!

3 0
3 years ago
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