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Jet001 [13]
2 years ago
5

If using the method of completing the square to solve the quadratic equation x2 + 3x - 17 = 0, which number would have to be add

ed to complete the
square"?
Mathematics
1 answer:
MatroZZZ [7]2 years ago
8 0

Answer:

Step-by-step explanation:

To solve using completing square, we need to write the equation as x2+3x=17.

The next step is to add a number such that the square can be completed. The number must be equal to (b/2a)^2, so here it will be (3/2)^2 = 9/4

The equation then becomes x2+3x+(9/4)=17+(9/4).

Solving it further will get you the final answer

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The math club makes 35 bars of laundry soap a week and sells these at $20 each before the soap could be sold , the pupils found
Svet_ta [14]

Answer:

Step-by-step explanation:

The math club makes 35 bars of laundry soap a week and sells these at $20 each. This means that the total number of bars of laundry soap made in a 4 week month would be

4 × 35 = 140 bars

If the pupils found that 6 bars were destroyed by mice, the total number of bars of soap left would be

140 - 6 = 134 bars

Therefore, the total sale at the end of a four week month would be

134 × 20 = $2680

7 0
2 years ago
The diagram shows a sector of a circle radius 10cm
Yuki888 [10]

Answer:

\text{Perimeter of sector = 43.6 (Rounded to the nearest tenth.)}

Step-by-step explanation:

\text{Perimeter of the sector = Radius + arc length + radius}

\text{Radius = 10 cm}

\text{Perimeter of the sector = 10 + arc length + 10  }

 \text{Perimeter of the sector = 20 + arc length  }

\text{arc length   = (sector angle/ 360 ) * perimeter of the circle}

\text{Perimeter of a circle }=2\pi r

\text{sector angle} = 135

\text{arc length}   =  (135/ 360 ) * 2\pi (10)

= (3/8) 20\pi

= 15\pi /2

\text{Using  }\pi =3.14

= 15 * 3.14 /2

= 23.55

\text{Perimeter of the sector = 20  + 23.55}

= 43.55

= 43.6  cm

\text{perimeter of the sector  = 43.6  cm }

8 0
2 years ago
If m 1 = 30° and m = 20°, then m =
Alex
Answer: Then m = 10<span>°</span>
3 0
3 years ago
Solve and i give brainliest
Temka [501]

Answer:

0.25

Step-by-step explanation:

-9/6 divided by 3/-2 = 0.25

i am sorry

4 0
2 years ago
Read 2 more answers
Need help ASAP please
OlgaM077 [116]

Step-by-step explanation:

sue = 18 sweets

tony= 18 sweets

(sue)      S= (18 - x)-5

(tony)     T=(18 + x) ÷ 2

hope this helps :)

6 0
2 years ago
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