1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Luba_88 [7]
3 years ago
11

Dot diagram to show why 9 is a square number

Mathematics
1 answer:
Tamiku [17]3 years ago
4 0

9 is a square number because when you use the dot diagram, 9 dots form a square. They are in a 3 by 3 square.

I attached how to show this.

If you have any further questions feel free to ask.

Hope this helps.

You might be interested in
Solve for X.<br><br> Y=2/3×-4
ArbitrLikvidat [17]

Answer: -8/3

Step-by-step explanation:

Multiplying a positive and a negative equals negative: (+)•(-)=(-)

y= - 2/3•4

Y= -8/3

3 0
3 years ago
PLEASE HELP???!!!!!
Likurg_2 [28]
We'll use the Pythagorean Theorem
130^2 = side^2 +50^2
side ^ 2 = 16,900 -2,500
side ^ 2 = 14,400
side = square root (14,400)
side = 120 feet



4 0
3 years ago
Read 2 more answers
Jerry ate 1,070 calories total at breakfast. He ate a cup of yogurt that had 150 calories in it and some granola. Each cup of gr
Maru [420]

Answer:

4 cups that's how many cups Jerry ate

4 0
3 years ago
Diameter=14.6 <br> round to nearest tenth
grandymaker [24]

The next greater tenth is  14.7
The next smaller tenth is  14.5

Neither of them is nearer to 14.6 than 14.6 already is.
So 14.6 is already the nearest tenth.


4 0
3 years ago
Read 2 more answers
A rocket is launched straight up from the ground with an initial velocity of 192 feet per second. The equation for the height of
Ivenika [448]

The equation for the height of the rocket at time t given

h= -16t^2+192t

We have to find the time t, when the rocket reaches 560 feet.

That means we have to find t when h = 560 ft. we will place 560 in the place of h to find t now.

h= -16t^2+192t

560 = -16t^2+192t

In the right side, we can check -16 is the common factor. So we will take out -16 from the rigbht side.

560 = -16(t^2 - 12t)

To get rid of -16 from the right side and move it to left side, we will divide both sides by -16.

560/-16 = -16(t^2-12t)/-16

-35 = t^2 -12t

Now we will move -35 to the righ side by adding 35 to both sides.

-35+35 = t^2-12t+35

0 = t^2 -12t+35

t^2-12t+35 = 0

We will factorize thee left side to find the values of t now. We need to find a pair of factors of 35 that by adding them we will get -12.

The pair of factors of 35 are -5 and -7 and by adding -5-7 we will get -12.

t^2-12t+35 =0

(t-5)(t-7) =0

So by using zero product property we will get

t-5 =0

t-5+5 = 0+5

t=5

Also t-7 =0

t-7+7 = 0+7

t=7

So we have got the rocket reaches at 560ft when t = 5 seconds and also when t = 7 seconds.

Now part b.

When the rocket completes its trajectory and hits the ground then the height or h = 0. So we will place h = 0 there in the equation.

h= -16t^2+192t

0= -16t^2 + 192 t

0 = -16(t^2-12t)

-16(t^2-12t) = 0

We will move -16 to the other side by dividing it to both sides.

-16(t^2-12t)/-16 = 0/-16

t^2-12t = 0

We will take out the common factor t from the left side. By taking out t we will get,

t(t-12) = 0

We will use zero product property now. By using that we will get,

t = 0

ans also t-12 = 0

t-12+12 = 0+12

t = 12

When the rocket completes its trajectory and hits the ground the time t can not be 0. When t =0, the rocket starts the trajectory.

So when the rocket completes its trajectory and hits the ground ,

then t = 12seconds.

So we have got the required answers.

6 0
3 years ago
Other questions:
  • What are the roots of the equation?
    8·1 answer
  • A school sold small and large boxes of fruit for a fundraiser. One student sold 5 small boxes and 13 large boxes for $232. Anoth
    11·2 answers
  • Maria will spin the arrow on the spinner three times. What is the probability that the arrow will stop on A, then B, then C?
    8·1 answer
  • If a is a positive number, 400% of a is what percent of 400a?
    7·2 answers
  • In 1860, gingham cloth sold for
    14·1 answer
  • Alan can do 2/3 part of his work and sam can do 3/4 part of her work .Who can do more work​
    9·2 answers
  • The function f(x) = 4x + 10 models the amount of money Francis makes when babysitting for x hours. How much money will he make
    14·1 answer
  • Please help me answer my questions...
    6·2 answers
  • Please help (100 points and brainiest for right answer!)
    10·1 answer
  • -2.75 + 8.25 ? Help pls
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!