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Margarita [4]
3 years ago
12

A 7-inch candle burned at the rate od 0.5 inch per hour. write a two variable linear equation that represents the height of the

candle, h after x hours
Mathematics
2 answers:
arlik [135]3 years ago
7 0

Answer:

14 hours

Step-by-step explanation:

You basically divide 7 by .5.

KatRina [158]3 years ago
4 0

Answer:

h = 7 – 0.5x  

Step-by-step explanation:

h = mx + b

The height of the candle decreases by 0.5 in/h, so

m = -0.5

y  = -0.5x +b

When x = 0, h = 7.

7 = -0.5×0 + b

7 = 0 + b

b = 7

h = -0.5x + 7 or h = 7 – 0.5x

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If a quadratic function has x-intercepts at (-7,0) and 10,0), where would
madam [21]

Answer:

x = 1.5

Step-by-step explanation:

Since the axis of symmetry is between the 2 x intercepts, we can find it by finding the average of the x-coordinates of the 2 points.

(-7 + 10) / 2

3/2

= 1.5

So, the axis of symmetry is at x = 1.5

8 0
3 years ago
Andrew has already played 32 minutes on his video game today and wants to play an additional 15 minutes each of x games after sc
artcher [175]

Answer:

y = 15x+32

Step-by-step explanation:

Given

y to be the total minutes Andrew will play video games today

x is the total number of games played after school

If he wants to play an additional 15 minutes each of x games after school today, the total minutes he will use for the x games will be 15* x = (15x)minutes

We are told that he has initially spent 32minutes on video games. hence;

Total minutes Andrew used on games y = (15*x)+32

The required equation will be y = 15x+32

7 0
3 years ago
190% of what number is 76<br> Plz hurry I really want to get this done
pishuonlain [190]

Answer:

190 is 76% of 250

Step-by-step explanation:

We have, 76% × x = 190

Multiplying both sides by 100 and dividing both sides by 76,

we have x = 190 × 100/76

x = 250

If you are using a calculator, simply enter 190×100÷76, which will give you the answer.

7 0
3 years ago
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