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3 years ago

12

Use the parabola tool to graph the quadratic function. f(x)=2x^2+4x−16 Brainlest and 35pts plz help me!!!

1 answer:

garri49 [273]3 years ago

6 0

Answer:

you would place the y-intercept at (0,-16). and then the coordinates would be (-4,0) and (2,0). and the graph would be facing up or positive .

Step-by-step explanation:

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Help with math, please!! ASAP

vovikov84 [41]

Not sure but im guessing 6 inches

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3 years ago

Show all work and express your answers in scientific notation.

galben [10]

Answer:

8640

Step-by-step explanation:

Take 2.4 hours, And 1 hour is 60 minutes, and 1 minute has 60 seconds, so 1 hour has 3600 seconds, Do one more hour and you have 7200 seconds, Now you need to add another .4 hours, .4 hours is equal to 40 minutes, so how many seconds are in 40 minutes? 1440 seconds are in 40 minutes, so add 7200 and 1440 and you get 8640.

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3 years ago

Solve by adding or subtracting.<br> x+y=-10<br> 2x-y=-8

riadik2000 [5.3K]

Answer:

$x=-6\\y=-4$

Step-by-step explanation:

To solve, isolate your first equation for y.

$x+y=-10\\y=-x-10$

Now, plug in this y value to your second equation.

$2x-(-x-10)=-8\\2x+x+10=-8\\3x+10=-8\\3x=-18\\x=-6$

Now, plug your x value into your first equation and solve for y.

$-6+y=-10\\y=-4$

3 0

4 years ago

Read 2 more answers

It costs $100 to rent the bowling alley, plus $4 per person. The cost for any number (n) of people can be found using the expres

STatiana [176]

Answer: The cost for 20 people equals $180.

Step-by-step explanation:

Given: It costs $100 to rent the bowling alley, plus $4 per person.

The cost for any number (n) of people can be found using the expression

$100+4n$

We can find the cost for 20 people by substituting n=20 in the above expression, we get

$100+4(20)=100+80=180$

Hence, The cost for 20 people equals $180.

3 0

3 years ago

Read 2 more answers

The original price of a skateboard, not including tax, was $96. Charlie bought the skateboard on sale, and he saved 30% off of t

Lady_Fox [76]

Answer:

$67.20

Step-by-step explanation:

"30% off" translates into multiplying the original price by 1.00 - 0.30, or 0.70.

0.70($96) = $67.20 is the sales price

4 0

3 years ago