its the day befofe valentines day and shelly needs to get valentine cards for all of her classmates the desks are arranged in a rectangle 7 rows wide and 5 rows long if there are 3 desks that are empty how many students are in the class

Answers

Answer 1

Answer:

21

Step-by-step explanation:

(7x2)+(5x2)-3=21

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┃┈┃┈╰━╰━━━━━━╮

╰┳╯┈┈┈┈┈┈┈┈┈◢▉◣

╲┃┈┈┈┈┈┈┈┈┈┈▉▉▉

╲┃┈┈┈┈┈┈┈┈┈┈◥▉◤

╲┃┈┈┈┈╭━┳━━━━╯

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Answer 2

Answer:

32 students

Step-by-step explanation:

7 times 5= 35

35-3=32 students


Related Questions

The surface area of a rectangular prism with length l, width w, and height h is 2lw+2wh+2lh. Albert keeps his art supplies in a wooden box shaped like a rectangular prism. He wants to cover the box with silver glitter contact paper. The box has dimensions 12 inches by 10 inches by 6 inches.
How many square inches of contact paper does Albert need to cover the box?

Answers

Answer:

Albert need 504 square inches of contact paper

Step-by-step explanation:

l = 12 inches  ; w = 10 inches  ; h = 6 inches

Surface area = 2lw + 2wh +  2lh

                     = 2*12*10 +2*10*6 + 2*12*6

                     = 240 + 120 + 144

                     = 504 square inches

Consider the quadratic equation: x^2-16x=13.
What would this equation look like after completing the square on the left side?

The left-hand side of the equation becomes __
(enter a binomial)

The right-hand side of the equation becomes __ (enter a number)

Answers

Answer:

x^2-16x=13

x^2-16x+64=13+64

x^2-16x+64=77

(x-8)^2=77 or (x-8)^2-77=0

Adding 64 came from doing (b/2)^2 where b is the constant in ax^2+bx+c, I hope this helps.

I know how to do these,but I’m pressing time and I’m at work so someone just help me out. You are appreciated.

Answers

Mean: 22

Median: 22

Range: 14

Midrange: 22

Answer:

the first one is correct

Step-by-step explanation:

i hope u give me a brainilest

Which scatterplot shows the weakest positive linear association?
On a graph, points are grouped closely together and increase.
On a graph, points are grouped closely together to form a line and increase.
On a graph, points are grouped closely together and decrease.
On a graph, points are grouped closely together to form a line and decrease.

Answers

Answer:

c

Step-by-step explanation:

i got it right on the test

The scatter plot which shows the weakest positive linear association is; On a graph, points are grouped closely together and increase.

Which scatterplot shows the weakest positive linear association?

It follows from the task content that the scatterplot which shows the weakest positive linear association be identified.

On this note, for an association to be positive, the graph must increase. However, the scenario described is a weak linear association, hence, the points don't necessarily form a line accurately, they just have to be closely together and increase.

Read more on scatterplot;

https://brainly.com/question/6592115

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Seventy-nine less than five times a number is at most 241. What is the maximum value of the number?
A) 79 - 5x > 241
B) 5x - 79 > 241
C) 5x - 79 5 241
D) 79 - 5x < 241
Answer using complete sentence(s)

Answers

B) 5x-79 > 241
Explanation: Got the answer right on a quiz!

Suppose a normal distribution has a mean of 266 and a standard deviation of
12. What is P(x 2 254)?
A. 0.16
B. 0.475
C. 0.84
D. 0.975

Answers

Answer:C. 0.84

Step-by-step explanation:

Just took the quiz

Answer:

C. 0.84

Step-by-step explanation:

I just took the test

.......................................... hi pls help thanks

Answers

Answer:

distributive property

addition property

division property

given

Which is the least time 9.75, 9.7 or 9.675 and why

Answers

Answer:9.675 because it’s less than 9.70 and 9.75

Step-by-step explanation:

A zookepper predicted that the weight of a newborn lion would be 2.8 pounds. When the zoo's lion gave birth, the newborn weighted 3.5 pounds. What is the zookeeper's percent error?

Answers

Answer:

0.7

Step-by-step explanation:

i did it with math

Answer:

25%

Step-by-step explanation:

divided 3.5 by 2.8 = 1.25

the point 25 is your percent error

Convert
431 base 10 divided by 112base 10 Then u should convert the final answer to base 5​

Answers

Answer:

32115

Step-by-step explanation:

Step1

Converting 431 to base 10.

4*102=400

3*101=30

1*100=1

Adding all to get Ans=43110

Step2 converting 43110 to 5

The equation calculation formula for 43110 number to 5 is like this below.

5|431

5|86|1

5|17|1

5|3|2

5|3|3

Ans:32115

Planter is 14ft, width. is 5ft and Height is 4ft what is the cubic feet of soil to fill the planter half full?

Answers

Volume = length x width x height.

Volume = 14 x 5 x 4 = 280 cubic feet.

Divide by 2 to find half the volume:

280/2 = 140

140 cubic feet of soil is needed.

Answer:

140 cubic feet

Step-by-step explanation:

Volume=Length*width*height

280=5*14*4

280/2=140

(dividing by 2 because its asking half the volume)

solve for the x,y and find the measure of the obtuse angle in the diagram.​

Answers

Answer:

7x+34=12x-31

34+31=12x-7x

65=5x

x=13

Step-by-step explanation:

u can put the values and solve now

It was cloudy 12 out of 30 days in April. Which value is equivalent to the fraction of days it was cloudy in April? (Not college its middle school btw)

Answers

Answer:

You included no options so I will list some of the various fractions and decimal that are equivalent to the fraction of days it was cloudy in April.

In fraction form, the value can be simplified to;

⁶/₁₅⁴/₁₀²/₅

In decimal form, the value would be;

= 12 ÷ 30

= 0.4

Kenny has a jar full of nickels and dimes. If he counted the money in his jar, how much does he have ?

Answers

Answer:

Step-by-step explanation:

  it c

Answer:

C.

Step-by-step explanation:

What is 6 1/4 written as a decimal?

A. 6.5

B. 6.2

C. 6.25

D. 6.025

Answers

Answer:

C. 6.25

Step-by-step explanation:

6 is a whole number while 1/4 is translated into .25 as a decimal

the answer is
c. 6.25

Find the value of x.

Answers

Answer:

(x+40) +65 = 180

x+40 =108-65

x=43-40

x= 3

Help help help help Which property justifies Anne’s first step ?


A.distributive property of multiplication over addition


B.commutative property of multiplication


C.multiplication property of equality

D.addition property of equality

Answers

Answer:

A i believe, correct me if I'm wrong

Answer:

a. distributive

Step-by-step explanation:

What does the equation 7(3x - 4) equal?

Answers

This will equal 21x - 28

Answer:

21x-28

Step-by-step explanation:

7 times 3x is 21x

7 times -4 is -28

hence 21x-28

Two Tickets to an ice skating performance costs $36. For five tickets it costs $90, and for 9 tickets it costs $162.​

Answers

The proportional relationship that gives the cost of x tickets is:

[tex]y = 18x[/tex]

What is a proportional relationship?A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

[tex]y = kx[/tex]

In which k is the constant of proportionality.

Two tickets to an ice skating performance costs $36, hence, when [tex]x = 2, y = 36[/tex], then:

[tex]y = kx[/tex]

[tex]36 = 2k[/tex]

[tex]k = \frac{36}{2}[/tex]

[tex]k = 18[/tex]

Hence, the relationship is described by:

[tex]y = 18x[/tex]

You can learn more about proportional relationships at https://brainly.com/question/13550871

for the function f(x)=(x+3)^2-2 find the vertex, axis, domain, range, largest interval of domain over which function is increasing, and largest open interval over which function is decreasing

Answers

Answer:

Vertex = (-3, -2)

Domain = (−∞,∞),{x|x∈R}. Range = [−2,∞),{y|y≥−2}[-2,∞){y|y≥-2}

Jon is 3 years younger than Laura. The product of their ages is 1,330. If j represents johns age and j+3 represents Laura’s age, what value of j could be johns age

Answers

645668888888854389000099876543322247

which number is an integer?

A: -9,248.3
B: -16/17
C: 10,839
D: 35,749.087

Answers

The correct answer is c!

Is -3/4 greater or less than -.75

Answers

Answer:

they're equal

Step-by-step explanation:

Explain the different types of rain​

Answers

Answer:

Convectional rainfall. - Convectional rainfall occurs when the energy of the sun heats the surface of the Earth, causing water to evaporate to form water vapour. When the land heats up, it warms the air above it. This causes the air to expand and rise. As the air rises, it cools and condenses. ... If this process continues, rainfall will occur.

Orographic or relief rainfall. - Orographic or relief rainfall is caused when masses of air are forced up the side of elevated land formations, such as large mountains, often referred to as an upslope effect. The lift of the air up the side of the mountain results in adiabatic cooling, and ultimately condensation and precipitation.

Cyclonic or frontal rainfall. - Frontal or Cyclonic Rain is caused by cyclonic activity and it occurs along the fronts of the cyclone. It is formed when two masses of air of different temperature, humidity and density meets. For example meeting of moisture laden warm tropical wind with a polar air mass. A layer separating them is called the front.

Step-by-step explanation:

Hope this helps!

what's the number in the green box​

Answers

Step-by-step explanation:

Given : Empty Boxes with  addition / subtraction  and their ouput

To find : numbers in boxes full filling the given conditions

Solution:

Let assume left  top corner number = a

now  Right   top corner would be = 16 - a

Left   bottom corner would  = 26  - a

Let assume bottom right corner = b

=> 16 - a  + b = 16

=> b = a

also

26 - a  - b = 12

=> a + b = 14

while a = b

=> 2a = 2b = 14

=> a = b = 8.0

16 - a = 8.0

13 - a = 20.0

8.0     +  8.0      = 16

+             +

20.0   -  8.0     = 12 26         16

What is the indicated limit?

Answers

The limit doesn't exist

Which of the following would represent the first step in simplifying the problem 7 + 5(6 - 2) ÷ 2.


12(6 - 2) ÷ 2

7 + 30 - 2 ÷ 2

7 + 5(6) - 1

7 + 5(4) ÷ 2




Can someone help mason????

Answers

7+5(4) \ 2 this is the answer
Answer : D explanation

Select the correct answer from each drop-down menu.
What is the factored form of this expression?
27t3 – 36t2 – 12+ + 16 =

Answers

The factored form of this expression is (9t^2 - 4)(3t - 4)


Factored form of a polynomial

The polynomial is a function with a degree of 3 and above. Given the polynomial function;

27t^3 – 36t^2 – 12+ + 16 = 0

Group

(27t^3 – 36t^2) – (12t + 16) = 0

Factor out the GCF

9t^2(3t-4)-4(3t-4) = 0
(9t^2 - 4)(3t - 4)

Hence the factored form of this expression is (9t^2 - 4)(3t - 4)

Learn more on factored form here: https://brainly.com/question/43919

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HELP I NEED THE ANSWER BY TODAY!!!!!!

1.Most snakes live where the temperature ranges from 75° to 90°, inclusive. Write a compound inequality to
represent temperatures where the snakes will NOT live.

2.Atlantic sea turtles that incubate below 23° or above 33° rarely hatch. Write a compound inequality to
represent the temperatures at which the eggs SHOULD be incubated.

3.A certain road has a speed limit of 65 mph and a minimum speed of 40 mph. Write a compound inequality that
represents the speed you should drive to avoid getting a ticket.

Answers

Answer:

What is his answer I'm just   go with 90 c 75 equals +109  carry the nine and throw away the 100 and 9 plus 1000003333333368888886666666777777266666666222222266666 = 2222222222299999999996666666666822222222222666666666666633333333333333399999333333333333333888888888888             I'm in 5 e grade by the way (:

Step-by-step explanation:

so don't blame me if I'm

helpgg
bggfggggggggggggggg

Answers

Answer:

I am pretty sure it is -$00.14

Step-by-step explanation:

If you do the math that I think I did correctly you would get 14. Since the bagel cost 39 cents less that is what you would be taking from. The orange juice costs 25 cents more so what I think you would do is 39-25.

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