How do you know if a whole number is a perfect square?

A. A whole number is a perfect square if it is divisible by 4.

B. A whole number is a perfect square if its square root is an irrational number.

C. A whole number is a perfect square if it is divisible by 2.

D. A whole number is a perfect square if its square root is a whole number.

Answers

Answer 1
D because if you can square root it into a whole numbers then it’s a perfect square

Related Questions

ashley spends $12 to buy 3 pencils and 6 rulers. Jack spends $8 to buy 5 pencils and 2 rulers. what is the cost of 2 pencils and 2 rulers?

Answers

Answer:

$ 3 left ashley money

$ 1 left  jacks money

$ 8 left ashley money

$ 4 left jacks money

Step-by-step explanation

3 pencils + 6 rulers = 12 - 9 = 3

5 pencils +  2 rulers = 8 - 7 = 1

12 - 4 = 8

8 - 4 = 4

Answer:

I am guessing 2 rulers are two dollars and 2 pencil are 4 dollars

Points P, R, and S, are collinear such that R lies on PS. It is known that the ratio of
PR: RS = 1/3}. Find the location of coordinate R if P is located at (-2,-6) and is
located at (10,30).

Answers

Answer:

1,3

Step-by-step explanation:

Sorry if my English is bad

or if my answer is wrong but from my understanding,

as you can recognize from the photos, we need to understand what a collinear is. Collinear are points that are lying in the same straight line. Thus, we can transform the ratio to fractions which means 1 : 3 into 1/3

Hence, the coordinate R is 1/3 between P and S.

Therefore, to determine coordinate R, we must use the formula that is provided. P is (X1, Y1), S is (X2,Y2), M1 is 1 or the Numerator and M2 is 3 or The denominator.

How many pennies would be in a tower that is 10 miles
high?

Answers

Just measure the width (or height, if you'll be stacking the pennies
a mile high) of a penny, then divide 5280 feet by whatever you find.
This is a great activity for a class, and in fact a good way to start
the project. First take one penny, and work out an answer. Then get
100 pennies, and measure them; do the same calculation to see how many
pennies it will take to make a mile. There will probably be a
difference, because you can measure 100 pennies more accurately than a
single penny. Or maybe you have a micrometer that will measure one
penny precisely. Which is better can be a good discussion starter. And
don't forget to try it in metric, too.

Just to illustrate, using a very rough estimate of a penny's width,
let's say a penny is about 3/4 inch wide. The number of pennies in a
mile will be

5280 ft 12 in 1 penny
1 mile * ------- * ----- * ------- = 5280 * 12 * 4/3 pennies
1 mi 1 ft 3/4 in

This gives about 84,480 pennies. (This method of doing calculations
with units is very helpful, and would be worth teaching.)

If we measure 100 pennies as 6 ft 1 in, we will get

5280 ft 100 pennies
1 mile * ------- * ----------- = 5280 * 100 * 12 / 73 pennies
1 mi 6 1/12 ft

This gives us 86794.5205 pennies in a mile.

Can someone answer fast.plsss

Answers

Answer:

a

Step-by-step explanation:

sec (thita) = squrt (5)

squaring on both sides:

sec^2 (thita) = 5 - equation 1

1 + tan^2 (thita) = 5

tan^2 (thita) = 4

tan (thita) = 2.

= tan (thita) - squrt(5)sin(thita)

= 2 - squrt(5) x 2/ squrt(5)

= 0

from eqn - 1

sec(thita) = squrt(5)

cos(thita) = 1/ squrt(5)

sin(thita) = squrt ( 1- 1/(squrt (5))^2)

sin(thita) = 2/ squrt(5) .

57 toys are split into groups of 4 toys. What question do we need to answer here? pls answer quick! this test is already missing and I need to complete it! please no wrong answers :(( it's due in like 20 mins :/

Answers

Answer:

how many toys are in each group?

HELP!!!!!!!!!!!!!!!! URGENT question below

Answers

Let's solve your equation step-by-step.

3x−5x+14=26

Step 1: Simplify both sides of the equation.

3x−5x+14=26

3x+−5x+14=26

(3x+−5x)+(14)=26(Combine Like Terms)

−2x+14=26

−2x+14=26

Step 2: Subtract 14 from both sides.

−2x+14−14=26−14

−2x=12

Step 3: Divide both sides by -2.

−2x

−2

=

12

−2

x=−6

Answer:

x=−6

What is a unit rate?

Answers

Answer:

The numbers or measurements being compared are called the terms of the ratio. A rate is a special ratio in which the two terms are in different units. ... When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates.

Step-by-step explanation:

Answer:

Unit rate is used to compare quantities in which the second quantity is one. Common examples of unit rate would include, miles per hour earnings per hour cost per gallon.

Step-by-step explanation:

It's also your rise over run, remember to look at the unit of measurement when counting. Example, If rise over run is 1Mile/15min. That's a unit rate.

I am wondering Jake finished race at 24.53 18.44 Lacie finished the race at 18.44. What is the difference between Lacie's time and Jake's time i really dont know?

Answers

Answer:

The difference between the times is just 6.09

Step-by-step explanation:

Here, we are interested in finding the difference between the times when two athletes finished their races.

While one finished at 24.53, the other finished at 18.44; So the difference between the two will be calculated by subtracting the time which was less from the time which was more;

Mathematically, that would be 24.53 - 18.44 = 6.09

Most brainliesttttttttttttttttttttttttttt

Answers

Answer:

88

Step-by-step explanation:

d=6 f=2

(6)^2 + 26(2) =

36 + 26(2) =

36 + 52 =

88

Answer:

88

Step-by-step explanation:

Given

d² + 26f , substitute d = 6 and f = 2 into the expression

= 6² + 26(2)

= 36 + 52

= 88

Round 3,567 to the nearest thousand

Answers

The answers is 4,000.

[tex]\text {Hey there!}\\\\\text {3,567 to the nearest thousand}\\\text {First, we look at the 5 in the hundreds.}\\\text {3567 nearest thousand is 4,000 because if the number is 5, it will goes to the end.}\\\\\text {Hope this helps!}\\\text {-TestedHyperr}[/tex]

If AABC = ADEC,
B = 48° and E = x + 4
A
B
E
x = [?]

Answers

Answer:

x = 44°

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ÷)

How many solutions does the following system of equations have?
v=3x +2
2v=5x+8

Answers

Answer:

The answer is C, zero solutions.  

Step-by-step explanation:

y = 5/2x + 2

2y = 5x + 8

Multiply 2 to the first equation.  

2y = 5x + 4

Compare it with the other equation

2y = 5x + 4

2y = 5x + 8

Cancel 2y and 5x on both sides.  

Remaining:

4 = 8

4 ≠ 8.  Therefore, the answer is C, zero solutions.  

Mr Cole made this diagram of his bedroom. Which is the area of Mr. Cole's bedroom?
10 ft
5 ft
4 ft
8 ft
A 90 square feet
B 82 square feet
c 72 square feet
D 36 square feet

Answers

The answer is 72 square feet

Answer:

B

Step-by-step explanation:

area =area of full shape - area of B

=10×9-4×2

=90-8

=82

Sam and James needed a midnight snack. They found
a cake that Sam's mom had just made that day. Sam
and James were the first to eat the cake. If Sam ate
2s of the cake and James ate of the cake, how
much of the cake was left?

Answers

Answer:

if the cake was full the slices remined were four

57 toys are split into groups of 4 toys. What question do we need to answer here? pls answer quick! this test is already missing and I need to complete it! please no wrong answers :(( it's due in like 20 mins :/

Answers

Answer:

im thinking its how many toys you need in each group?

Step-by-step explanation:

Solve the equation
6 - ( 3 - c ) = 2

Answers

Answer:

c = -1

Step-by-step explanation:

6 - (3 - c) = 2

6 - 3 + -(-c) = 2

3 + c = 2

c = 2 - 3

c = -1

Check:

6 -(3-(-1)) = 2

6 - (3+1) = 2

6 - 4 = 2

Answer:

C=-1

Hope this helped! :) if it was correct please give me brainliest!

7) Line Segment PR is 5 ft. Find the length of Line Segment PQ and QR. (Hint: use the segment addition postulate.)

Answers

Answer:

PQ = 1 ft

QR = 4 ft

Step-by-step explanation:

From the picture attached,

Segment PR has been divided into two parts by a point Q.

Length of segment PR = 5 feet

Length of segment PQ = (15x - 2) ft

Length of segment QR = (5x + 3) ft

Since, PR = PQ + QR

5 = (15x - 2) + (5x + 3)

5 = 20x + 1

20x = 4

x = [tex]\frac{4}{20}[/tex]

x = 0.2

PQ = 15x - 2

     = 15(0.2) - 2

     = 3 - 2

     = 1 ft

QR = 5x + 3

     = 5(0.2) + 3

     = 1 + 3

     = 4 ft

-4x+1=2x-17 What is the solution for x ?

Answers

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = 3}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{ - 4x + 1 = 2x - 17}[/tex]

Move 2x to left hand side and change it's sign

Similarly, move 1 to right hand side and change it's sign

[tex] \dashrightarrow{ \sf{ - 4x - 2x = - 17 - 1}}[/tex]

Collect like terms

[tex] \dashrightarrow{ \sf{ - 6x = - 17 - 1}}[/tex]

The negative integers are always added but posses the negative ( - ) sign

[tex] \dashrightarrow{ \sf{ - 6x = - 18}}[/tex]

Divide both sides by -6

[tex] \dashrightarrow{ \sf{ \frac{ - 6x}{ - 6} = \frac{ - 18}{ - 6}}} [/tex]

Calculate

[tex] \dashrightarrow{ \sf{x = 3}}[/tex]

Hope I helped!

Best regards! :D

Write an equation for the description
The sum of 13 and a number x is equal to 15.

Answers

I think it’s 13+x=15

Solve the compound inequality 2.1 – 3 < 7 and 5 - 3 < 8

Answers

Step-by-step explanation:

2.1--3<7.

--0,9<7

true

5--3< 8

2<8

true

x+2/2x+3=y+1 rearrange and make x the subject

Answers

Answer:

x = y/2 - 1

Step-by-step explanation:

Solve for x:

2 x + 3 = y + 1

Hint: | Isolate terms with x to the left hand side.

Subtract 3 from both sides:

2 x = y - 2

Hint: | Solve for x.

Divide both sides by 2:

Answer: x = y/2 - 1

You have $700 to buy new carpet for your bedroom right and solve in any quality that represents the cost per square foot that you can pay for the new carpet. Specify the units of measure in each step

If you can show the steps it’ll be helpful

Answers

it should be $1.00 per square ft.

7 - 5/2 (8r - 6) + 2r =32

Answers

Answer:

r=-5/9

Step-by-step explanation:

Factor out the 2 from the expression

Reduce the numbers with the greatest common factor 2

Distribute the 5

Add Like terms

And then divide to get r

Craig has of collection of 220 marbles. He lets his friend have 14 of his collections and sells 15 of his collection to the novelty store. He takes 15 marbles home to give to his brother. How many marbles remain in Craig's collection?

Answers

220-14= 206
206-15=191
191-15=176
Answer: 176

The ratio of boys to girls in Mr. Jordan's soccer team is the same as the ratio of boys to girls on Ms. Grolin's soccer team. There are 12 boys and 4 girls in Mr. Jordan's team. There are 9 boys on Ms. Grolin's team. How many girls are on Ms. Grolin's team? A. 2 B.3 C.4 D.6

Answers

Answer:

B

Step-by-step explanation:

Ms. Jordan's girls are divided by 3 than the girls. 12 ÷ 3 = 4

Same with Ms. Grolin. 9 ÷ 3 = 3. The answer is B.

Emily owns 10.2 shares of stock in a company. On Friday, the stock dropped by $1.35/share. What was the total change in value of Emily’s stock? −$13.77 −$7.56 +$7.56 +$13.77

Answers

Answer:

answer is +$7.56

Step-by-step explanation:

I guess I was help full for u

plz follow me for more updates

simplify the following expressions ( use distributed property )

Answers

Answer:

x - 3y

Step-by-step explanation:

Step 1: Write expression

[tex]\frac{3x-9y}{3}[/tex]

Step 2: Factor

[tex]\frac{3(x-3y)}{3}[/tex]

Step 3: Simplify

x - 3y

the midpoint of ab is m (3,-4). If the coordinates of A are (8,-5), what are the coordinates of B

Answers

Answer:

work is attached and shown

The coordinates of the midpoint will be (-2,-3).

What is coordinate geometry?

A coordinate plane is a 2D plane that is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.

A midpoint is a point that lies on a line connecting two other locations and is in the middle of the line. Given that the midpoint of AB is M(3,-4) and the coordinates of A are (8, -5).

The midpoint will be calculated by using the formula below:-

( 8 + x ) / 2 = 3

( 8 + x ) = 6

x = -8 + 6 = -2

( -5 + y ) / 2 = -4

( -5 + y ) = -8

y =  -8 + 5 = -3


Therefore, the coordinates of the midpoint will be (-2,-3).

To know more about Coordinate geometry follow

brainly.com/question/18269861

#SPJ2

Help plssssssssssssss

Answers

Answer: Midpoint= (3,3)

Step-by-step explanation: Midpoint formula [tex]MP= (\frac{x_{1}+x_{2} }{2}), (\frac{y_{1}+y_{2} }{2} )[/tex]

[tex]MP= (\frac{8+-2 }{2}), (\frac{12+-6 }{2} )[/tex]

[tex]MP= (\frac{6 }{2}), (\frac{6 }{2} )[/tex]   6 divided by 2 = 3

[tex]MP= (3,3)[/tex]

how much can an 55 affect my overall 100 grade?

Answers

Answer:

Depends on how many assignments you've completed.

Step-by-step explanation:

The accumulated overall grade is all about percentages, everything's a ratio when it comes to grades.

Answer:

it can bring it down alot

Step-by-step explanation:

it also can make your redo the grade

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