MATHEMATICS MIDDLE SCHOOL

Hardy's plant grows rapidly. It grows by 10cm every 2 years. How much taller will hardy's plant be in 5 years?

Answers

Answer 1
Answer: find the unit rate .unit rate =5:1 multiply 1x5 and 5x5 and you will get 25:5 so 25 would be your answer
Answer 2
Answer: It will be 25cm long Since it growing 10cm every 2 years it must be growing 5cm every year 10/2=5/1 To find total growth in 5 years multiply the cm it grows every year by the number of years so 5yearsX 5cm =25cm

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A ball is thrown into the air with an initial upward velocity of 60ft/s. Its height h in feet after t seconds is given by the function h=-16t^2+60t+6a. After how many seconds will the ball hit the ground?
b.What will the height be at t=3 seconds
Also, please show work, thanks!

Answers

Part a.

You need to solve the quadratic function h = -16t^2 + 60 t + 6 = 0

-16t^2 + 60 t + 6 = 0

Divide by 2, just to make the numbers easier

-8t^2 + 30t + 3 = 0

Use the quadratic formula to find the roots

t=[ -b ± √(b^2-4ac) ] /2a

t=[-30 ± √(30^2-4(-8)(3) ]/2(-8)

t=[-30 ± √(900 + 96) ]/(-16)

t=[-30 ± √(996) ]/(-16)

t=[-30 ± 31.56) ]/(-16)

t=[-61.56) ]/(-16) = 3.85 s

Part b)

h = -16t^2 + 60 t + 6
h (3) = -16(3)^2 + 60 (3) + 6 = -144 + 180 + 6 = 42 ft

Explain how you know that the values of the digit 5 in the numbers 150,000 and 100,500 are not the same.

Answers

Answer:

The place value of both the numbers are different so they are not same.

Step-by-step explanation:

To find : Explain how you know that the values of the digit 5 in the numbers 150,000 and 100,500 are not the same ?

Solution :            

The place value system is

Hundred Th.     Ten Th.     Thousand     Hundred     Tens    Ones

     1                        5                  0                0                0           0

     1                        0                  0                5                0           0

We have seen that,

In the numbers 150,000 the 5 digit is at ten thousand place.

In the numbers 100,500 the 5 digit is at hundred place.

As the place value of both the numbers are different so they are not same.
In the number 150,000 the number is in the ten thousandths place.

In the number 100,500 the number is in the hundredths place.

Witch is longer 2 feet or 30 inches

Answers


30 inches would be longer because 2 feet is equal to 24 inches. 30 is larger than 24.
Since 1 foot is equal to 12 inches,        12 inches x 2 feet = 24 inches
2 feet = 24 inches

30 inches is longer

PLEASE HELP ME ASAP SHE SAID IT WASN'T B NOR C!!!!

Answers

Yeah A might be it…this questions makes no sense if it’s the answer tho

Match each item in Column A to an answer in Column B.What property is shown by the equation?


Column A
1.–(–33 + 18) = 33 + (–18)
2.–10 + (–15) = –15 + (–10)
3.4 + (29 + 16) = 4 + (16 + 29)
4.–12 + (12 + 27) = (–12 + 12) + 27

Column B
A.commutative property
B.associative property
C.opposite of a sum property

Answers

Its A. associative property because the problem stays the same like so ex- 2+7+5= 2+7+5

Multiply −3i(−8 + 7i). What is the simplified version written in standard form, a + bi, where a and b are real numbers?−21 + 24i
21i2 + 24
21 + 24i
−4 − 11i

Answers

The answer is option two.
The second option is the correct answer.
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