Mathematics Middle School

21r<7 please help. I don't even know Algebra.

Answers

Answer 1

Answer:

r < 1/3

Step-by-step explanation:

Answer 2

Answer:

r<1/3

Step-by-step explanation:

21r / 21 = r

7 / 21 = 1/3

Since 21r is less than 7, using the equations shown above, we can also see r (singular) is less than 1/3.

Related Questions

Please help me!!!!! (25 points)
Right answers only!!!!!!

Answers

the correct answer would be 8

Answer

8

Step-by-step explanation:

Mk so 1 step is 26 - 18 to find the difference then you check the difference of 35 to 43 , 86 to 94 and you should get 8

Find the missing number of the unit rate.
12/4 = ?/1

Answers

Answer:

Step-by-step explanation:12/4 can be simplified into 6/2 which can be simplified into 3/1. 3/1 is your answer!!

Answer:

Three

Step-by-step explanation: The reason why the missing number is three is because if you divide 12 by 4 you get 3.

keli wants to sew trim around the sleeves and hem of a dance costume. she needs a piece of trim that is 8 1/8 inches long for the sleeves and a piece that is 40 5/8 inches long for the hem. if the package contains 5 feet of trim, how much trim will be left after making the costume

Answers

Answer:

1 15/16 ft

Step-by-step explanation:

40 5/8 + 8 1/8 = 48 6/8

There are 12 inches in a foot.

48/12 = 4

6/8 inch divided by 12 is 1/16 ft

Bhwjwjwjwjjwjwjwjwjwkwkkw

The are adding a new room to their house. The room will be a cube with volume 6859 ft. They are going to put in hardwood​ floors, and the contractor charges ​$5 per square foot. How much will the hardwood floors​ cost?

Answers

Answer:

1,371.8

Step-by-step explanation:

Here's how I got it

Since the whole square feet is 6859, and they charge 5$ per square feet, I believe if you divide 6859 divided by 5 you get 1,371.8

Sorry if I got it wrong!

Answer:

$1805 i think

Step-by-step explanation:

Cube root the volume of the room (6859) which equals 19. do 19x2=361. Do 361x5=1805. So the total would be $1805 i believe

Evaluate the product: (a-10)*(a-9).....(a-1)*a

[tex](a-10)*(a-9).....(a-1)*a[/tex],

where a=2

Please help soon. Thank you!

Answers

Answer:

10x9-5(8)=34

Step-by-step explanation:

When you evaluate it gives you this a^4-20a^3+109a^2-90a hope this helped :)

I NEED HELP NOW! Five students labeled a base, B, and a corresponding height, H, for each of these Parallelograms. Are all the drawings? Explain your reasoning.

Answers

Answer:

not d

Step-by-step explanation:

because hight for all of the other shapes is up and down , not horizontal

D is a big no no. Big dum

Write an algebraic expression for each word phrase.

Answers

5n +7

.... Hope this will help....

Answer:

(5 * n) + 7

Step-by-step explanation:

Since we do not know the value of n, we can't write an equation for this. You could also write it as 5n + 6.7 if you'd like. Since letters and numbers don't mix, we can't add 6.7 to 5n. I rounded 6.7 to 7 in my answer. Hope this helped.

Yo can someone help me out

Answers

Answer:

11

Step-by-step explanation:

PEMDAS

divide first, then add

Answer: 11

Step-by-step explanation: Divide & multiply first so 12/4 then add 8 which would = 11

Im confused I got 70

Answers

Answer:

$190

Step-by-step explanation:

you just have to add all the numbers up- 62.89+48.26+81.99 which is about 193 so you would round down

You just add all the prices up.

Look at the picture of the prism separating light. Which explains why a prism can separate sunlight into a rainbow of all the visible colors? Right triangle prism with beam of white light touching its right corner and beam of colored light coming out from its base Question 4 options:

A. Light of each wavelength travels at a different speed through a vacuum.

B. The glass of a prism absorbs some colors and transmits others.

C. Light of each wavelength is refracted at a different angle.

D. The prism reflects light of each wavelength at a different angle.

Answers

Answer:

B

Step-by-step explanation:

It’s D. First of prisms are used to break up light conduit spectral colors because of the refractive index depends on frequency, the white light enters the prism and is a mixture of different frequencies each of which it’s been slightly differently.

12.96÷6 is what in lesson 3.13

Answers

Answer:

2.16

Step-by-step explanation:

12.96 ÷ 6 = 2.16

Answer:

2.16

Is the answer.

I need help NOW!!!!!! Thanks!



D
Parallelogra
Base (units) Height (units) Area (units)
m
A
4
6
A-24
B
5
3
A-15
C С
D
Any
Parallelogra
m
b
h
A= bh

Answers

Answer:

Answer: Good thing you provided the image!

Working down the columns:

C base= 2

D base = 4

C height =3

D height = 2

C area = bh = 8

D area = bh = 8

Step-by-step explanation:

Try thinking about drawing a rectangle around the entire image of C and D, connecting each of the corners (sort of like what is being done for B) and then you can perceive the b and h.

The trick to D is to turn your head 90 degrees (or sideways) so you can see those 4 boxes as the base.

Step-by-step explanation:

plssss helppppp asap

Answers

T= -9 :) , because negative divided by a negative is a positive!
t=-9 is the answer because aienoahwkqonaojslsnkwjs the other person said so

Can anyone help me pls. Show your work.

Answers

Answer:Do you have a pic of the map? It would  make it easier to solve if I could see the map. Its basic area. A=base times height. If the park is 50 m long and is a square, you would do 50 times 50=2500

tep-by-step explanation:

Yea what ever he said was right I have the same problems

For breakfast, Mr hill bought a cup of coffee for 1.39 and a bagel for 1.85. How much change will he get for 5.00

Answers

Me hill will get 1.76 in change

Hence, the change he get is $[tex]1.76[/tex].

What is the equation?

The definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

Here given that,

For breakfast, Mr hill bought a cup of coffee for [tex]1.39[/tex] and a bagel for [tex]1.85[/tex].

So,  the total he bought is [tex]1.39+1.85=3.24[/tex]

He has the savings [tex]5.00[/tex]

So, it would be

[tex]5.00-3.14=1.76[/tex]

Hence, the change he get is $[tex]1.76[/tex].

To know more about the equation

https://brainly.com/question/12788590

#SPJ2

HELP ASAP!!! The number of y calories burned after x hours of rock climbing is represented by the linear function y=650x. 1) Find the domain of the function. may write in math notation or in words. 2) Is the domain discrete or continuous?

Answers

Ola amigo!!!!!! Ci u lotta cute
i have attached the answer in the image

I need help NOW!!!!!!!!!!!



A student said, “We can't find the area of
the shaded region because the shape has
many different measurements instead of
just a length and a width that we could
e multiply."
35
10
10
15
10
30
15
10
60

Answers

Its just 30x60=1800...right?

I think I agree with Brainliest

In July, the average temperature in one US city was 29°C. By December, the average temperature had fallen by 29°C. Explain why the average temperature in December was 0°C.

Answers

Answer:

Down Below :))

Step-by-step explanation:

This is quite simple.

Take a look at both of the numbers, see how their both 29?

Subtracting 29 - 29 = 0

Explanation: The average temperature was 0 because when subtracting 29 - 29, it gives you 0.

The temperature went up 29°C, which represents a positive 29. Then the temperature fell 29°C, which represents a negative 29. The average temperature rose and fell the same amount. The absolute values are the same, so the difference is 0.

IamSugarBee

Help me with this please

Answers

A is 54 because 3x18=54

B is -6°? I know it cooled 6° each hour because 12÷2 = 6 but I’m not sure if your teacher would want you to mark that as a negative or positive.
1st answer 54
2nd answer -6

what is the GCF of 18 and 63

Answers

Answer: 9


The prime factorization of 63 is: 3 x 3 x 7. The prime factors and multiplicities 18 and 63 have in common are: 3 x 3. 3 x 3 is the gcf of 18 and 63. gcf(18,63) = 9

Answer: The greatest comon factor of 18 and 63 is 9

Step-by-step explanation: 9 is the highest number that can go into both 63 and 18. It goes into 18 twice ( 18/9 = 2, and 63/9=7)

Parker is planning to build a playhouse for his sister.The scaled model below gives the reduced measures for width and height. The width of the playhouse is 22 centimeters and the height is 10 centimeters. Not drawn to scale The yard space is large enough to have a playhouse that has a width of 3.5 meters. If Parker wants to keep the playhouse in proportion to the model, what cross multiplication of the proportion should he use to find the height? (3.5) (10) = 3.5 x (3.5) (22) = 3.5 x (10) (3.5) = 22 x (1) (22) = 3.5 x

Answers

Answer:

c

Step-by-step explanation:

mha

Answer:

c

Step-by-step explanation:

help meeeeee i will mark brain

Answers

Answer:

on 9b the cost to rent a bike

Step-by-step explanation:

(A) the cost to rent a bike

Convert the number to scientific notation

86,002,300 = .... x 10 to what power

Answers

Answer:

8.6002300X10^7

Step-by-step explanation:

Answer:

8.6002300X10^7

Step-by-step explanation:

Answers: [tex]\frac{70}{3}[/tex] ≤ x ≤ 24 or [tex]\frac{70}{3}[/tex] ≤ x ≤ 48 Question: Can you combine the 2 answers into 1 solution (##≤x≤##) Put a fence as a rectangle shape on the back of the house with one side as the wall of the house. The total length of fence is 70 meters. What could be the length l of the rectangle so that the enclosing area is at least 528 m^2?

Answers

Answer:

Step-by-step explanation:

I don’t get what this is trying to say

3(x-4)=-24 Please help me in a zom 7 mins left

Answers

Answer:

x = -4

Step-by-step explanation:

Answer:

x = -4

Step-by-step explanation: hope this helps tell me if you get it right and PLZ if you wanna BRAINLIEST

Convert the number to scientific notation.

0.08 = ... x 10 to what power

Answers

Step-by-step explanation:

[tex] \huge0.08 = 8 \times {10}^{ - 2} [/tex]

The answer is 8*10^-2

Jasmin's dog weighs 55 pounds. Her vet told her that a healthy weight for her dog would be less than or equal to 42 pounds. Jasmin's dog can lose an average of 7 pounds every week. Write the solution to an inequality that describes all possible number of weeks x for which her dog can be at a healthy weight.

Answers

Answer:

x = 2

Step-by-step explanation:

55-42=13

13 brought up to 14 so it can be divided by 7

14 / 7 = 2

The correct answer x=2
Explanation -14/7= 2

If m is a positive integer, what is the least value of m for which 180 is a factor of 105m

Answers

Answer:

Step-by-step explanation:

If 180 is the factor of 105 m, then the factors of 180 should also be the factors of 105 m.

Factors of 180 = 15 * 12

Factors of 105 m = 15 * 7 * m

The least value of m is  = 12

The answer is 12 as
15*12 is 108
So m=12

please help me.
[tex]2x \div 3 \times 9[/tex]
​

Answers

I think x=13.5 because 3x9=27 27/2=13.5 so that leaves x as 13.5
The answer is: 6x
Make 2x divided by 3 a fraction: 2/3x x 9
Cancel out 3 and 9 by 3: 2x x 3
Then do 2x times 3 which is: 6x

I need help assap !!!!

Answers

Answer:

C & D

Step-by-step explanation:

Both have an odd amount of numbers, meaning there is a perfect middle.

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