in the library, there are 9 rectangular tables with 8 pupils each and square tables with 4 pupils each. how many square tables ar needed so that 100 pupils can read at the same time?​

Answers

Answer 1

Answer:

9 rectangular tables and 7 sqaure tables

Step-by-step explanation:

9 x 8 = 72

100-72=28

4x7=28


Related Questions

16/17 rounded to the nearest hundredth

Answers

Answer:

0.941

Step-by-step explanation:

Mrs. Washington is scooping 4 1/2 cups of peanuts with a scoop that holds 1/3 cup. How many scoops wil she fill

Answers

Answer:

12.5

Step-by-step explanation:

3 scoops = 1 cup

6 scoops = 2 cups

9 scoops = 3 cups

12 scoops = 4 cups

n − 2/3 = 25 3/4 help now

Answers

Answer:

26 5/12

Step-by-step explanation:

n − 2/3 = 25 3/4                            Add 2/3 to both sides

n - 2/3 + 2/3 = 25 3/4 + 2/3         Combine

n = 25 3/4 + 2/3

Work with the fractions

3/4 + 2/3                                      The lowest common denominator is 12

(3*3)/(3*4) = 9 / 12

(2*4)/(3*4) = 8/ 12

9/12 + 8/12 = 17/12 = 1 5/12

Now you need to add 1 to 25

1 + 25 = 26

And add the fraction 5/12

The answer is 26 5/12

A spring balance measures?

Answers

Answer:

A spring balance measures the weight of an object by opposing the force of gravity acting with the force of an extended spring.

mrk brainliest?

Can somebody help me on this

Answers

i think the answer is A
A is the correct answer because if you flip the left shape to the right side, R and L are both on the same side and the same angle, just on different shapes.

Which equation is parallel to
y =2/3x – 6 and passes through (9, -3)?

Answers

Answer:

y=2/3x -3

Step-by-step explanation:

y=mx+c

If the gradient(m) is the same then it's parallel.

The line passes through -3 so the y intercept(c) is -3

Answer:

Y=2/3x-9

Step-by-step explanation:

Y=mx+c

y=2/3x+c

Then substitute the coordinates

y=-3

x=9

-3=2/3*(9)+c

-3=6+c

Make c the subject by subtracting 6 from both sides.

-9=c

so the answer is

Y=2/3x-9

Triangle PQR is similar to triangle VWX. What is the length of PR?

Answers

Answer:10.5

Step-by-step explanation:I’m smart

Answer: 10 i promise u it is.

Step-by-step explanation:

Which statement is the lie?


Part A: Prompt: \large 4n-3

A. Three less than four times a number

B. Four times a number less than 3

C. Four times a number decreased by 3

Answers

Answer:

C. Four times a number decreased by 3

what is the equation for 15% of 24​

Answers

Answer:

5 / 5 = 100%         Nov 18 11:54 UTC (GMT)

15 / 24 = 62.5% Nov 18 11:54 UTC (GMT)

255 / 280 = 91.071428571429% Nov 18 11:54 UTC (GMT)

0.067 = 6.7%          Nov 18 11:54 UTC (GMT)

51 / 50 = 102%  Nov 18 11:54 UTC (GMT)

Answer:

24 times .15

Step-by-step explanation:

15% is equal to .15, and in this case, if you are trying to find the answer, it is 3.6

for his phone service, Jonh pays a monthly fee of $30, and he pays and additional $0.05 per minute of use. the least he has been charged in a month is $99.45
what are the possible number of minutes he has used his phone in a month?
use m for the numbers of minutes, and solve your inequality for m.​

Answers

$99.45-$30= $69.45

$69.45/.05= 1,389

He's been using his phone for 1,389 minutes.

0.05m + 30= $99.45

Answer:

m= 1395

Step-by-step explanation:

99.45 -30=

69.45

69.45 divided by 0.05

Here is a system of linear equations:
equation 1: 2x + 7y = 8
equation 2: 2x + y=14
Solve this system with either the substitution method
OR the elimination method. Type your answer as an
ordered pair, then explain how you found the solution to
the system.

Answers

Answer:

X=7.5 y=-1

Step-by-step explanation:

[tex]2x + 7y = 8 \\ 2x + y = 14[/tex]

I multiplied the equation with - 1 to than I sum it with the second one to get rid of x

[tex] - 6y = 6 \\ y = - 1[/tex]

Now you put Y in on of the equation and you get x.

[tex]2x - 1 = 14 \\ 2x = 15 \\ x = 7.5[/tex]

There are two dimes and a nickel in your pocket. You randomly pick a coin from your pocket and place it on the counter. Then you pick a second coin from your pocket.

Answers

Answer:

each coin has a 1/3% chance of being picked

Step-by-step explanation:

I ordered 8 pizzas for my son’s birthday party. Each pizza had 8 slices. If my son and his friends ate 47 slices of pizza at the party, how many slices will I have leftover?

Answers

Answer:

17

Step-by-step explanation:

8*8 = 64

64 - 47 = 17

Which expression is equivalent to
(5^-2)(5^-1)

-1/125
-1/5
1/125
1/5

Answers

Answer:

1/5

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

What is 24 + x = 29?

Answers

Answer:

The answer is x=5

Step-by-step explanation:

hope this helps

Given:24 + x = 29

Solutions: To find the x subtract both side by 24.

24-24 + x = 29-24

x=5

Answer:

x=5

Step-by-step explanation:

24+x=29 - subtract 24 from both sides to isolate variable

x=5

i need help with this ^

Answers

b + 24 + 7b + 4b = 180
12b + 24 = 180
12b = 156
b = 13

(Blank) Divided by 4 = 8 Remainder 3

Answers

Answer: 35
Step-to-step: 8 times 4 equals 32 plus your remainder 3 equals 35.
Check: 35 divided by 4 equals 8 with a remainder of 3
35 divided by 4 equals 8 with a remainder of 3

Morgan is 5 feet tall. There are 2 .54 centimeter in 1 inch. What is Morgan’s height in centimeters?

Answers

Answer:

152.4cm

Step-by-step explanation:

12 Inches per foot.

5 x 12

60

1 inch in cm is 2.54

60 x 2.54

152.4cm

Hope this helped!

Which of the following is true about a linear function? (4 points)


A. It may curve in some parts and be horizontal in others.


B. It must cross the origin.


C. It has a constant rate of change.


D. It must contain only positive values.

Answers

Answer:

The answer is c

Step-by-step explanation:

Answer:

the answer is C. It has a constant rate of change.

Step-by-step explanation:

Y=2/3x+5
Y=x+3
How do I solve for x I’m confused with the fraction part ?

Answers

Answer:

(6,9)

Step-by-step explanation:

Y=2/3x+5

Y=x+3

2/4x + 5 = x + 3

Solve the equation

x=6

Substitute the value of x

y=6+3

Solve the equation again.

Now we know y=9

(x,y) = (6,9)

Check the solution

9=2/3 x 6 + 5

9=6+3

Simplify

-(-3 / -2)= ???? I need help pleasee

Answers

Answer: -(-3 / -2)= ?

Step-by-step explanation:

Answer:

1.5

Step-by-step explanation:

- - = +

so 3 ÷ 2 is 1.5

hope it helps!

help plzzzzzz!!! The ratio of green marbles to total marbles in a bag is 2:9. The ratio of red marbles to total marbles in the same bag is 1:3. Which of the following statements is true?

There are more red marbles in the bag.
There are more green marbles in the bag.
There is the same number of red and green marbles in the bag.

Answers

There are more green marbles

Answer:

There are more red marbles in the bag

Step-by-step explanation:

2/9 = .2222 green

1/3 = .33333 red

In two or more complete sentences explain how to balance the chemical equation and classify its reaction type. ___NaI + ___Pb(SO4)2 ⟶ ___PbI4 + ___Na2SO4

Answers

Answer:

4112

Step-by-step explanation:

Answer:

By applying law of conservation of mass.

Explanation:

Every balanced chemical equation follows law of conservation of mass.

This law states that mass can neither be created nor can be destroyed but it can only be transformed from one form to another form.

This law also states that the total number of individual atoms on the reactant side must be equal to the total number of individual atoms on the product side.

For the given reaction, the balanced chemical equation follows:

4Na1+Pb(SO4)__Pb14+2Na2SO4

On reactant side:

Number of sodium atoms = 4

Number of iodine atoms = 4

Number of lead atoms = 1

Number of sulfur atoms = 2

Number of oxygen atoms = 8

On product side:

Number of sodium atoms = 4

Number of iodine atoms = 4

Number of lead atoms = 1

Number of sulfur atoms = 2

Number of oxygen atoms = 8

Hence, the balanced chemical equation is written above.

Step-by-step explanation:

Identify a and b for the hyperbola with equation. (y^2/b^2)-(x^2/a^2)=1

Answers

The value of (a) and (b) for the hyperbola are [tex]\sqrt 3[/tex] and 2

The equation of the hyperbola is given as:

[tex]\frac{y^2}{b^2} - \frac{x^2}{a^2} = 1[/tex]

The curve of the graph passes through points (0,2) and (-4,3).

So, we have:

[tex]\frac{2^2}{b^2} - \frac{0^2}{a^2} = 1[/tex] and [tex]\frac{(-4)^2}{b^2} - \frac{3^2}{a^2} = 1[/tex]

[tex]\frac{2^2}{b^2} - \frac{0^2}{a^2} = 1[/tex] becomes

[tex]\frac{4}{b^2} = 1[/tex]

Cross multiply

[tex]b^2 = 4[/tex]

Take positive square root of both sides

[tex]b = 2[/tex]

[tex]\frac{(-4)^2}{b^2} - \frac{3^2}{a^2} = 1[/tex] becomes

[tex]\frac{(-4)^2}{2^2} - \frac{3^2}{a^2} = 1[/tex]

[tex]\frac{(-4)^2}{4} - \frac{9}{a^2} = 1[/tex]

[tex]4 - \frac{9}{a^2} = 1[/tex]

Collect like terms

[tex]- \frac{9}{a^2} = -3[/tex]

Cross multiply

[tex]-3a^2 = -9[/tex]

Divide both sides by -3

[tex]a^2 = 3[/tex]

Take square roots of both sides

[tex]a = \sqrt 3[/tex]

Hence, the value of (a) and (b) for the hyperbola are [tex]\sqrt 3[/tex] and 2

Read more about hyperbolas at:

https://brainly.com/question/14503968

barb exercises for 22 hours each week. how many hours does she exercise in 14 weeks. use the array drawn on the grid go help multiply ​

Answers

Answer:

308 hours

Step-by-step explanation:

22 x 13

Suppose Karen $1000 that she invests in an account that pays 3% interest compounded annually. How much money does Karen have at the end of 3 years?Solve for the interest
Please I need Help I beg Please Help Meeeeeeeeeeeee

Answers

3%of 1000x3 then that’s ur asnwerer

Write a linear function f with f(0) = 7 and f(3) = 1.
f(x) = 0

Answers

Start with

y = mx + b

Now use the 2 given points to find m and b.

7 = m(0) + b
b = 7
1 = m(3) + 7
m = -2

f(x) = -2x + 7

What is the domain and range of each relation

Answers

Answer:

1 ans

domain=(-2,0,2,4)

range=(-3,-1,0)

2 ans

domain=(-3,-1,0,3)

range=(-1,0,1,2,3)

Step-by-step explanation:

Rectangle ABCD is dilated with center at (0, 0) and scale factor 2. Select the three statements that are true about the dilation.

Answers

Answer:

Options (3), (4) and (6)

Step-by-step explanation:

Coordinates of the vertices of the given rectangle are,

A(1, 5), B(3, 2), C(-3, -2) and D(-5, 1)

When rectangle ABCD is dilated by a scale factor of 2 about the origin,

Rule to be followed for the dilation,

(x, y) → (2x, 2y)

Therefore, image of the rectangle ABCD will be,

A(1, 5) → A'(2, 10)

B(3, 2) → B'(6, 4)

C(-3, -2) → C'(-6, -4)

D(-5, 1) → D'(-10, 2)

- Hence point B' is located at (6, 4).

- Rectangle ABCD and A'B'C'D' are similar as all the angles of image will be same as the pre-image after rigid transformation (dilation).

- Let the equation of the line B'C' is,

 y = mx + b

 Slope (m) = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

                  =  [tex]\frac{4-2}{6-3}[/tex]

                  = [tex]\frac{2}{3}[/tex]

 Since B'C' will pass through origin, y-intercept will be zero.

 Therefore, equation of B'C' will be,

  y = [tex]\frac{2}{3}x[/tex]

 Options (3), (4) and (6) are the correct options.

Answer:

well im confused but dont you have to find the prime too

Step-by-step explanation:

A customer requires a car service for 80 miles,
How much money will the customer save by taking Sal's Car Rides instead of Ray's Limo? Enter the answer in the box.

Answers

Answer:

$25

Step-by-step explanation:

Derive an equation to represent the cost of using each ride.

Sal's Car Rides:

Using 2 pairs of values from the table, (0, 40) and (20, 80), find the slope, m (fee per mile).

[tex] m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{80 - 40}{20 - 0} = \frac{40}{20} = 2 [/tex]

The y-intercept, b, is the one-time fee for fuel. This is the value of the cost ($) when number of miles traveled is 0.

Thus, b = 40.

Substitute m = 2, and b = 40 into [tex] y = mx + b [/tex].

Equation for the total cost for Sal's Car Rides would be:

[tex] y = 2x + 40 [/tex].

Find the total cost to be charged if a customer requires the a car service for 80 miles if he chooses Sal's Car Rides.

Simply substitute x = 80 in [tex] y = 2x + 40 [/tex].

[tex] y = 2(80) + 40 = 200 [/tex]

The customer would pay $200.

Ray's Limo:

The equation that represents the total cost (y) to be charged for number of miles (x), given that $2.50 is charged per mile plus a one-time fee of $25 for fuel, would be:

[tex] y = 2.5x + 25 [/tex].

If a customer uses Ray's Limo services for 80 miles, the cost charged would be:

Substitute x = 80 in [tex] y = 2.5x + 25 [/tex].

Thus:

[tex] y = 2.5(80) + 25 = 225 [/tex].

The fee the customer would pay = $225 for using Ray's Limo services.

Therefore, if the customer takes Sal's Car Rides instead of Ray's Limo, he would save, $225 - $200 = $25.

The customer would save $25.

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