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Natalija [7]
3 years ago
10

Determine the direction that is parábola opens: y=4x^2+8x+2

Mathematics
1 answer:
marissa [1.9K]3 years ago
5 0
It should open up because the a which is 4 is positive
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Find the slope between the two points: (9,9) and (12,15)
grandymaker [24]
The slope formula is \frac{Y2-Y1}{X2-X1}. For the two points, (x,y). You can pick any of the Y and X from these two points, but only once. \frac{9-15}{9-12} = \frac{-6}{-3} = 2 or \frac{15-9}{12-9} = \frac{6}{3} = 2 and both will equal to. The answer for the slope is 2.
3 0
3 years ago
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Mia hired a moving company. The company charged \$500$500dollar sign, 500 for its services, and mia gives the movers a 16\%16%16
Ira Lisetskai [31]

Mia gives $80 as tip to the movers.

<em><u>Explanation</u></em>

The moving company charged $500 for its service.

Suppose, the amount of tip is  x dollar, which is 16% of the total charge.

So, the equation will be.....

\frac{x}{500}*100\% = 16\%\\ \\ \frac{x}{5}=16\\ \\ x=5*16=80

So, the amount of tip Mia gives the movers is $80

7 0
3 years ago
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Wolfgang and Heinrich worked as electricians at $14 and $12 per hour respectively. One month Wolfgang worked 10 hours more than
Licemer1 [7]

Let us say that:

x = hours worked by Wolfgang

y = hours worked by Heinrich

 

So that:

x = y + 10

14 x + 12 y = 3520

 

By combining the two equations:

14 (y + 10) + 12 y = 3520

14 y + 140 + 12 y = 3520

26 y = 3380

y = 130 hours

x = y + 10 = 140 hours

 

<span>So Wolfgang worked 140 hours while Heinrich worked 130 hours.</span>

4 0
3 years ago
A new Bruno's Bakery uses 4/9 of a barrel of raisins each day. Cosmo's Bakery uses 6/5 as much raisins as the Bruno's Bakery. Ho
navik [9.2K]
So we know that the Bruno's BAkery uses 4/9 barrels and that Cosmo's Bakery uses 6/5 as much. So we have to multiply 4/9 * 6/5 which is equal to 0.53 for one day.
Since they are asking for the 3/7 of the week we multiply 3/7 *0.53.
This is equal to 0.23 or 23/100
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3 0
3 years ago
1. Find the Product of 8.02 and 6.1 and correct your answer to the highest whole number. 2. How many pieces of ribbon each 6cm l
Alja [10]

Answer:

1. 14

2.400 pieces

Step-by-step explanation:

1. 8.02+6.1= 14.12, since its less than 14.5 you must round down to 14

2. remember 1 meter is 100 centimeters, thus to find how many centimeters are in 24 m multiply 100 by 24. this will get 2400 centimeters

divide 2400/6 and you will get 400

5 0
3 years ago
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