Mathematics High School

Fernando has a prime number of books between 21 and 30 he says that if he takes 4of the books away he will be able to place the same number of books on wacho shelf of this bookcase how Many books does fernando have how many shelves are on the bookcase

Answers

Answer 1

Answer:

29 books ; 5 bookshelfs

Step-by-step explanation:

Solving logically ;

Prime numbers between 21 and 30 = 23, 29

Hence, number of books Fernando has is either 23 or 29

Taking 4 away from the number of books, he'll be able to arrange same number of books on each of his book shelve;

From the statement, we can conclude that :

Subtracting 4 from the number of books Fernando has should give a perfect square

If 23 books

23 - 4 = 19 ; 19 isn't a perfect square

If 29 books :

29 - 4 = 25

Hence, to place the same Number of books on each shelf :

Sqrt(25) = 5

Hence, number of bookshelf = 5

Related Questions

what graph below matches this equation y=2x+1

Answers

There is no graph attached

Jill earned $40 from a carpool plus 59 per hour (h) babysitting this week. Which of the following expressions best represents Jill's income for the week? (2 points) a 9 +40h Ob 9+h+ 40 9h + 40 d 9 + 40

Answers

if you earned 59 per hour and h is the amount of hours then you are multiplying along with the $40 so the equation is 59h + 40

Hi everyone,Can someone please help me please please I really really need help please answer it correct

Answers

Answer:

0<x<3

4<x<6

9<x<10

..........

Answer:

Hope it helps you

Step-by-step explanation:

Decreasing: A function is decreasing, if as x increases (reading from left to right), y decreases. In plain English, as you look at the graph, from left to right, the graph goes down-hill. The graph has a negative slope

So in given graph ,

Decreasing interval are ,

1) 9<x<10

2) 0<x<3

I done it using above definition you also check it from any other source and confirm it ..

in a sequence of numbers, a3=3, a4=7, a5=11, a6=15, and a7=19. based on this information, which equation can be used to find the nth term in the sequence, an?

Answers

Answer:

Step-by-step explanation:

sequence is a1,a2,a3,a4,a5,a6,a7,...

or a1,a2,3,7,11,15,...

d=a4-a3=7-3=4

a3=a1+(3-1)d

3=a1+2d

3=a1+2×4

a1=3-8=-5

an=a1+(n-1)d

an=-5+(n-1)4

an=-5+4n-4

an=-9+4n

Julie has 5 yards of fabric to make doll outfits. Each outfit requires 3/4 yards of fabric. What is the maximum number of outfits Julie can make with her fabric?

Answers

Answer:

Step-by-step explanation:

well 5 divided by 3/4 is 6.66666666667 which you can say is 6

If I run 50 yards, how much less did I run (in inches) than 50 meters?

Answers

Answer: 168.5 inches

50 yards = 1800 inches

50 meters = 1968.5 inches.

So, if you run 50 yards, you run 1968.5 - 1800, 168.5 inches less than 50 meters.

Let me know if this helps!

Please help me on this!
Show work please!

Answers

Answer:

Use M A T H W AY

trust me its goated

List down 3 biotic and 3
abiotic components of
ecosystem mentioned in
the video clip. From the
given examples, how do
they affect other
organisms in the
community in this time of
pandemic?

Answers

Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction. Examples of biotic factors are animals, birds, plants, fungi, and other similar organisms.

What is the answer?
Is it A B C or D

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

square the 3 and times 4 and 2

Two figures have a similarity ratio of 5:8. If the volume of the smaller figure is 875 mm, what is the
volume of the larger figure in cubic millimeters? Solve and explain the process you used to solve the
problem

Answers

Answer:

Step-by-step explanation:

The triangle represents a scale drawing that was created by using a factor of One-half.

A triangle with sides lengths of 5 inches.

Which is true of the measures of the sides of the original triangle?
Each side of the original triangle is One-half the length of each side of the scale drawing.
Each side of the original triangle is 2 times the length of each side of the scale drawing.
Each side of the original triangle is the same length as each side of the scale drawing.
Each side of the original triangle is 2 inches shorter than the scale drawing.

Answers

9514 1404 393

Answer:

(b) Each side of the original triangle is 2 times the length of each side of the scale drawing.

Step-by-step explanation:

If the smaller is 1/2 the larger, then the larger is 2 times the smaller. The original triangle's sides are 2 times those of the scale drawing.

Fully factorise 20x + 16.
.
2
-2
✓
2
TT
0
Enter your answer

Answers

Answer:

4(5x+4) is the answer

Step-by-step explanation:

..............

whether the following relation represents a function. Use pencil and paper.
Explain your reasoning.
{(-4,4), (-2,2), (-1,1), (-7,7), (-8,6), (-3,5)}
Does the relation represent a function?
Ο Νο
o Yes

Answers

Answer: it’s yes because A function is a relationship between quantities

The answer is O yes the relation does represent a function

Please help me if you guys can, it would be very appreciated!!<3

Answers

Since you already have the scale factor, just plug it in and find all sides of the triangle and and use the triangle area theorem

This a morning work and I don't get when they say "Area of a triangle" I'm still working on it, but Im just so confused. Can you help?

Answers

Answer:(b) 100^2in

Step-by-step explanation: Well 1st area means inside so they wanted you to find the inside, and well the answer is 100 hope it helped :)

Jim drank 2 4/5 cups of orange juice and Jack drank 1 1/10 cups less than Jim. How much juice did jack drink? Explain your answer.

Answers

Answer:

Step-by-step explanation:

2 4/5 - 1 1/10

2 8/10 - 1 1/10

1 7/10 is how much juice Jack drank

Answer:

1 7/10

Step-by-step explanation:

First you should change 4/5 to 8/10 to have a common denominator. Then you just subtract and to get the answer.

PLEASE HELP!! view attachment!!

Answers

3 I think good luck

Alfie has £10 note He buys 3 pens costing 1.45 each and some pencils costing 90p He gets 2.05 change. How many pencils did he buy?

Answers

Answer:

4 pencils

Step-by-step explanation:

Note= pencils costing 0. 90p

Given data

Balance= £10

pen= 3*1.45= £4.35

pencils=0.90p

change= £2.05

2.05= 10-4.35-90p

solve for p

2.05= 5.65-90p

collect like terms

5.65-2.05= 0.90p

3.6=90p

divide both sides by 90

p=3.6/0.90

p=4

Lane is fourteen years older than Michelle. If Lane is 33, how old is Michelle?

Answers

Answer:

Step-by-step explanation:

if lane is 14 years older and he is 33 to find michelle's age you just have to subtract 14 from 33 and get that that michelle is 19

Answer:

Michelle would be 19 years old

Step-by-step explanation:

33 minus 14 years is 19 because he is 33 she is 14 years younger so she would be 19 years old

If Brian took the same test and received a score of 80 % how many questions did he get right? ( hint the test is out of 20 points )

Answers

Answer:

Explanation:

First you convert

into a decimal which is

.80

then you multiply it by

.80

We multiply it by

because that's our total and by

.80

because that's the amount that we got correct. Had it been

100

then that would mean we got every question right.

Step-by-step explanation:

The answer is 16. If the test is 20 questions, each question is 5 points. (100/20)

What is 21 X 21 ????
3 3

Answers

Answer: 441

Step-by-step explanation:

21 x 21 = 441

Answer:

21 times 21 is 441

Step-by-step explanation:

i used a calculator

the volume of a recta

Answers

There is no graph to find the volume

What is the surface area of the cone in terms of r?
15 m
8 m
I m2

PLEASE HELP MEEE

Answers

Answer:

I need help too

Step-by-step explanation:

The perimeter of the square below can be described by the expression 64 + 12y. A square. Which of the expressions describes the length of one side of the square? A square has 4 equal sides. StartFraction 64 over 4 EndFraction = 16; StartFraction 12 y over 4 EndFraction = 3 y 16 + 12y 4 + 12y 4 + 3y 16 + 3y

Answers

Answer:

Step-by-step explanation:

I got it right on the instruction

EDGENUTIY 2021

Answer:

-by-step explanation:

who made god
who made the gods zeus
who made the galaxy
who made the earth
what came from nothing
who made prymids
adam and eve came out of nowhere?
who made the dinosaurs
if god was created who made god
who made him
who made that
we eat pizza inside out
space isnt empty
theres only one sunset,
you did not acknowledge my exisetanse till now.
what does a mirror look like when we dont look at it?

Answers

Answer:

god was made by science and magic that left from the nothing

god made zeus it's his son

little dust particles and hot gasses prob made the galaxy

the asteriods and comets made earth

jesus

egyptians

god made adam out of mud and god made eve out of adams ribs

water, dirt and eggs got mixed with fish eggs and made dinosaur

space and other gods

science

we always eat pizza from the inside and out

no space is never empty

no one knows if there could be other planets with sunsets

never

the opposite from us

Step-by-step explanation:

I WILL GIVE BRAINLIEST!!!! ANSWER QUICK!!!
Which of the following represents the general equation for the geometric sequence?

-1, -2, -4, …

a n = 2 n - 1

a n = -1 · 2 n - 1

a n = 1 · 2 n + 1

a n = 1 · 2 n - 1

Answers

Answer:

-1,-2,-4

an = a1 * r^(n - 1)

a1 = first term = -1

r = common ratio = 2

so the equation would be : an = -1 * 2^(n - 1)

Did You Find You Answer

What is the solution to the equation: 37x=9x+4

Answers

Answer: X = 1/7

Step-by-step explanation:

37x = 9x + 4

subtract 9x to both sides

28x = 4

now divide by 28

x = 4/28

simplified its

x = 1/7

Answer:

28x=4

x=1/7

Step-by-step explanation:

First you would make simplyfiy the expression so that you would have x on one side, when you do that you will get 28x=4. When simplyfied you will get 1/7.

The scale factor from drawing 1 to drawing 2 is ___ %

Please help! Fill in the blank

I will give brainliest

Answers

Answer:

ghggyffxvbvucfyiyiyxozhlhzguvufcbi8

Multiply (x – 3)(x + 5)

Answers

Answer:

x^2+2x-15 hope it helps

x^2-2x+15

I believe hope this helped !!

please help me ASAP explain for brainlist.

Answers

Answer:

assuming that there are an equal number of colored marbles in the bag and their total is 20 marbles in the bag:

C) 17/20

Step-by-step explanation:

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