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Inga [223]
3 years ago
13

The quadratic function below represents a parabola that opens down. Which value could be the missing number in the equation ? Th

e missing coefficient could be ?

Mathematics
1 answer:
Effectus [21]3 years ago
6 0

Answer:

-4

Step-by-step explanation:

The direction of the parabola depends on the sign of the leading coefficient i.e. sign of the coefficient with the squared term.

Remember these two points for vertical parabola:

  • If the leading coefficient is positive the parabola will always open upwards
  • If the leading coefficient is negative the parabola will always open downwards

We are given that the parabola opens down. This means that the leading coefficient must be negative. Among the given options only one option contains a negative number i.e. -4.

Therefore, the missing coefficient could be -4

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faust18 [17]
The answer is (-4, 5).
8 0
3 years ago
A teacher has 100 chairs to arrange for an assembly into equal rows Write one way the chairs could be arranged Include the numbe
tiny-mole [99]
That's easy if there is 100 chairs there would be 10 rows with ten chairs in each row
3 0
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Read 2 more answers
On the radio one morning, a weather reporter stated that the tempature was two degrees below zero, but the tempature would cotin
Anna71 [15]

Answer:

T ≥ -2

Step-by-step explanation:

Given

Temperature = 2° below 0°

Required

Represent as an inequality

First, we need to calculate the temperature in the morning.

2° below 0 means.

Temperature = 0° - 2°

Temperature = -2°

Next, we determine the temperature at any time.

The question says the temperature continues to rise during the day.

Represent this with T

This means T will be greater than -2°

However, we need to consider where the temperature started from.

In other words, T = -2

Combine T = -2 and T = -2 together, we have:.

T ≥ -2

Hence, the inequality that represents the scenario is T ≥ -2

8 0
3 years ago
Write a number between 80 and 100 that has exactly 3 factors, one of which is a 5
Flura [38]
Answer:

answer is 90

Explanation:

Here 5 is one of the 4 prime factors, so dividing the lower (80) and upper limit (100) by 5 we have new lower limit 16 and new upper limit 20.

So the product of other 3 factors should be greater than 16 and less than 20.

And we can have it from 18 only. Hence the number is 90.

The numbers between 80 and 100 having factor 5 are

<span>80,85,90,95,100</span>

<span>16=<span>24</span></span>

<span>17=17</span>

<span>18=2×3×3</span>

<span>19=19</span>

<span>20=<span>22</span>×5</span>

<span>90=2×<span>32</span>×<span>5</span></span>

<span><span>
</span></span>

5 0
4 years ago
Your family goes to a Southern-style restaurant for dinner. There are 5 people in your
AURORKA [14]
x-number\ of\ people\ who\ ordered\ chicken\\5-x-number\ of\ people\ who\ ordered\ steak\\\\13x+18(5-x)=80\\13x+90-18x=80\\13x-18x=80-90\\-5x=-10\ \ \ \ \ |:-5\\x=2\\\\5-2=3\\\\a)\ 3\ of\ them\ ordered\ steak\\b)\ 2\ of\ yhem\ ordered\ chicken
4 0
4 years ago
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