MATHEMATICS MIDDLE SCHOOL

A hovercraft takes off from a platform. It’s height (in meters), x seconds is modeled by h(x)=-(x-11)(x+3). What is the height of the hovercraft at the time of the takeoff?

Answers

Answer 1

Answer:

Answer:

The height of the hovercraft at the time of takeoff is 33 meters.

Step-by-step explanation:

Height of hovercraft x seconds after takeoff = h(x) = -(x - 11)(x + 3)

Height after takeoff is = h(0) = -(0 - 11)(0 + 3) = -(-11)(3) = 33

So the correct answer is 33 meters. The height of the hover craft at the time of the takeoff is 33 metres.

Answer: 33 meters.

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The point is on the x-axis and 12 units to the left of the
y-axis.

Answers

Answer:

(-12,0)

Step-by-step explanation:

If the point is on the x axis, that means the y coordinate is zero.

12 units to the left of the y axis means go 12 units negative on the x axis or -12

(-12,0)

Check the picture below.

What are the factors of sixty four and forty

Answers

$64=2*2*2*2*2*2=2^8$

$40=2*2*2*5=2^3*5$

And, the factors of 64: 1,2,4,8,16,32 and 64
40: 1,2,4,5,8,10,20 and 40

The factors of 64 and 40 are:
40:1,2,4,5,8,10,20,40
64:1,2,4,8,16,32,64
Hope I helped :-)!

A store bought 9 cases of lightbulbs in May and 8 cases in June. There are 58 lightbulbs in each case. How many lightbulbs did the sore buy altogether??

Answers

do 58 x 9 and 58 x 8 then add them up.
58 x 9 = 522 and 58 x 8 = 464
522 + 464 = 986
So the store bought 986 light bulbs in total.

50) A wheel has a radius of 9 inches and travels as it spins. How far does the wheel travel in one revolution? Show your work. Use 3.14 for /pi and round to the nearest inch please :).

Answers

You must use the formula for the circumference of a circle which is 19*3.14. That is the distance the wheel travels in one revolution.

Paul can choose to be paid $50 for a job or he can be paid 12.50 per hour. Underwhat circumstances should he choose the hourly wage? Explain

Answers

Option 1: $50
Option 2: $12.50 per hour.

50 ÷ 12.50 = 4

Paul can choose the hourly wage if he works more than 4 hours.
For example, he works 5 hours.

12.50 x 5 hours = 62.50

$62.50 is higher than the fixed rate of $50. Thus, hourly wage is the better option.

A rectangular sheet of paper had a width of 841 millimetres.Its area was 1 square metre.
What was its length to the nearest millimetre?

Answers

1 meter = 1000 millimeters

Area = length * width
A = lw

1000 = l * 841
1.19 = l

Length = 1.19 millimeters

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