The ratio of boys to girls in Ms. Cunningham’s class is 2 to 3. There are 18 girls in the class.

What is the total number of students in Ms. Cunningham’s class?

Answers

Answer 1

Answer:

30

Step-by-step explanation:

18 / 3 = 6

6 x 2 = 12

18 + 12 = 30


Related Questions

The trip from Carville to Planesborough takes 4 hours when traveling at a constant speed of 70 miles per hour. 2 1 How long, in hours, does the trip take when traveling at a constant speed of 60 miles per hour?

Answers

Answer:

2.5 mph

Step-by-step explanation:

70 miles per hour :4 hours

35 miles per hour:8 hours

1 mile per hour:16 hours

60 miler per hour

do 16/6

2.5 hours

Which component is missing from the process of photosynthesis?

Carbon Dioxide + ________ + Sunlight → Glucose + Oxygen

Light Energy
Sugar
Plants
Water

Answers

Answer:

Water i hope it is correct

the answer is water .

help pls im dont know it

Answers

Answer and Step-by-step explanation:

Area of triangle:

A = [tex]\frac{bh}{2}[/tex] (Base times height, all divided by 2)

Area of Rectangle/Square

A = bh (base times height)

Triangle:

[tex]\frac{7*24}{2} = \frac{168}{2} = 84[/tex]

Rectangle:

A = 12.5 * 13 = 162.5

162.5 + 84 = 246.5

#teamtrees #WAP (Water And Plant)

WILL GIVE BRAINLEST and points PLZ ANSWER ASAP
On a coordinate grid, point P is at (5, 2) and point R is at (−3, −4). Points Q and S are a reflection of both points across the x-axis. What are the coordinates of Q and S? (5 points) a Q(−5, 2), S(3, −4) b Q(−5, −2), S(3, 4) c Q(5, −2), S(−3, 4) d Q(−5, 2), S(−3, 4)

Answers

Answer:

The correct option is;

c. Q(5, -2), S(-3, 4)

Step-by-step explanation:

In a reflection of a preimage across the x-axis of a point with coordinates (x, y), the value and sign of the x-coordinate of the image does not change while the value of the y-coordinate of the image is the same as the value of the y-coordinate of the pre-image, but with opposite sign

Therefore, we have

The coordinate of the preimage before the reflection across the x-axis = (x, y)

The coordinate of the image after the reflection across the x-axis = (x, -y)

Therefore, for the preimage point P(5, 2) before the reflection, we have the coordinate of the image point as Q(5, -2)

Similarly, or the preimage point R(-3, -4) before the reflection, we have the coordinate of the image point as S(-3, 4).

The correct option is therefore, Q(5, -2), S(-3, 4).

Please help me 10 points for answering questions 3 and 4

Answers

Answer:

yes more points

Step-by-step explanation:

tysm

19/3+___+5/2=10 4/5 I don’t know it

Answers

Answer:

Blank space= 1.96

What is the slope of line P? And then what is the slope of line Q?

Answers

Slope of p = 3
Slope of q = -3
P= 3/1
Q= -3/1
Rise over run q is going to the left so it’s negative

what is the 7th term of the geometric sequence for 400, 200,100,....

Answers

Step-by-step explanation:

400,200,100,50,25,12.5, ...... 0.78125


Decide if the following equation is growth or decay?

y = 475 (0.256)

Decay
Growth

Answers

Answer:

decay im pretty sure

Step-by-step explanation:

1.8/0.087-0.947+2.2/0.044

Answers

Answer:

The answer is 2022537/290000

problem:

PLs HeLP !!!

multiply
(-8) x 11

Answers

Answer:

-88

Step-by-step explanation:

11*8=88 put the negative sign with it and you get -88

Answer:

the answer is -88

Step-by-step explanation:

Hope this helps you so glad that I could help

Daniel read 1/3 of a book in the morning, and he read some more at night. By the end of the day, he still had 2/5 of the book left to read. How much of the book did Daniel read at night?

Answers

Answer:amount read at night =4/15

Step-by-step explanation:

Step 1

Since we are dealing with fractions,

Let Total amount of book contained  to read = 1 whole

Therefore

Amount read  in the morning +  amount read at night +amount remaining = Total amount of book contained  to read which gves us the equation

1/3 + x + 2/5 = 1

Step 2 --- solving

1/3 + x + 2/5 = 1

1/3 + 2/5 + x= 1

5 + 6 / 15  + x = 1

11/15 + x= 1

x= 1 - 11/15

15/15 - 11/15

x =  amount read at night =4/15

x + 5y = -27
-2x - 5y = 24

Answers

Answer:

Step-by-step explanation:

x+5y=-27

-2x-5y=24

If the signs are the same u minus if they are different u add

So they are different were gonna add

x+5y=-27

-2x-5y=24

-1=-3

You cant divide it further x=-3

Next were gonna subsitute in any equation

x(-3)+5y=-27

-3+5y=-27

+3 to -27

-7+3=-24

5y=24

24/5=4.8 y=4.8

I hope this helps.

Karla's jewelry box is shaped like a rectangular prism. The bottom surface of the box has an area of 65 square inches. The height of the box is 12 inches. What is the volume, in cubic inches, of Karla's jewelry box? *

Answers

Answer:

780  cubic inches

Step-by-step explanation:

Step one:

Given data

The bottom surface of the box has an area of 65 square inches.

Already given an area and a height of 12 in

we proceed to find the volume by multiplying Area and height

Required

The volume of the box

Volume= Area* height

Step two:

Volume= 65*12

Volume = 780  cubic inches

does the graph represent a function?

Answers

Yes it does
..........

Convert 3 quarts to pints.​

Answers

It should be 6 pints

Answer: 6 pints

Step-by-step explanation:

Multiply the quarts by 2

What is the length of AC?

Answers

Answer:

b

Step-by-step explanation:

Answer:

136

Step-by-step explanation:

triangles CAB and CED are similar, their sides are proportional

set up a proportion:

[tex]\frac{51}{144-x}[/tex] = [tex]\frac{3}{x}[/tex]

cross-multiply:  51x = 3(144 - x)

                         51x = 432 - 3x

                         54x = 432

                          x = 8

Plug in:

144 - 8 = 136

1) For a period of time, an island's population grows at a rate of 3.8% per year. If the current
population is 1543, what will the population be in 5.2 years?

Answers

Okay so 3.8% of 1,543 is 58.634 so then you would multiply it by 5.2 for years witch would be 304.8978 so add that to the original witch is 1543 so your answer would be 1847.8978 rounded up would be 1848

answer first and u will get a brain, a few free questions, thanks, or a rating.

Answers

It’s B because if you divide 20/100it will equal 0.2 which also equals 0.20 or 20%.

A bag contains eleven balls labeled 1 through 11. One ball will be randomly picked. What is the probability of picking a multiple of 3? Write your answer as a fraction in simplest form.​

Answers

Answer:

3, 6, 9 (the multiples of three within 11)

3 out of 11 numbers are multiples of 3

so you have a 3 out of 11 probability to grab a multiple of three

3/11 is your answer

Step-by-step explanation:

Probability of picking a ball of multiple of 3 is equals to (3/11).

What is probability?

" Probability is a mathematical expression which represents the ratio of number of favourable outcomes to the total number of outcomes."

Formula used

Probability = [tex]\frac{Number of favourable outcomes}{Total number of outcomes}[/tex]

According to the question,

'B' represents the ball

Possible outcomes = { B₁, B₂, B₃, ...., B₁₀, B₁₁}

favourable outcomes multiple of 3 = { B₃, B₆, B₉}

Total number of outcomes= 11

Number of favourable outcomes = 3

Substitute the value in the formula we get,

Probability of picking ball multiple of 3 = ( 3 / 11)

Hence, probability of picking a ball of multiple of 3 is equals to (3/11).

Learn more about probability here

#SPJ2

Hello! Can someone please help me with this question ? I’ll mark brainly thanks ! :)

Answers

Answer:

[tex]\Large\boxed{\text{Perpendicular Equation:} \ y = -\frac{2}{7}x + \frac{22}{7}}[/tex]

[tex]\Large\boxed{\text{Parallel Equation:} \ y = \frac{7}{2}x -12}[/tex]

Step-by-step explanation:

In order to find the equations that are parallel/perpendicular to the line [tex]y = \frac{7}{2}x - 4[/tex], we need to note a couple things about the relationships between lines and their parallel/perpendicular lines.

A) If a line is perpendicular to another, the slopes will be opposite reciprocals (for instance [tex]-2[/tex] and [tex]\frac{1}{2}[/tex] - multiplied, they equal -1.)B) If a line is parallel to another, they will have the exact same slope.

Perpendicular:

We know that the slope of a perpendicular line will be the the opposite reciprocal of the line we're comparing it to.

Since the slope of our base line is [tex]\frac{7}{2}[/tex], we can find the reciprocal, then the opposite of that.

Reciprocal of [tex]\frac{7}{2} = \frac{2}{7}[/tex] Opposite of [tex]\frac{2}{7} = -\frac{2}{7}[/tex]

So the slope of this line will be [tex]-\frac{2}{7}[/tex], making our equation [tex]y = -\frac{2}{7}x+ b[/tex]

However, y-intercepts will not stay the same. In order to find this, we can substitute the point (4, 2) into our equation to solve for b.

[tex]2 = -\frac{2}{7} \cdot 4 + b[/tex] [tex]2 = -\frac{8}{7} + b[/tex] [tex]b = 2+\frac{8}{7}[/tex] [tex]b = 2 \frac{8}{7}[/tex] [tex]b=\frac{22}{7}[/tex]

Now we know the y-intercept of this equation is [tex]\frac{22}{7}[/tex]. We can now finish off our equation of the line by substituting that in to what we already have,  [tex]y = -\frac{2}{7}x+ b[/tex].

[tex]y = -\frac{2}{7}x+ \frac{22}{7}[/tex]

Parallel:

As mentioned earlier, parallel lines will have the exact same slope but not the same y-intercept. Since the slope of our original equation is [tex]\frac{7}{2}[/tex], the slope for this one will also be [tex]\frac{7}{2}[/tex].

So we now know the equation looks something like [tex]y = \frac{7}{2}x + b[/tex].

In order to solve for b, we apply the same logic we did in the perpendicular line and substitute in the point (4, 2) into the equation.

[tex]2 = \frac{7}{2} \cdot 4 + b[/tex] [tex]2 = \frac{28}{2}+b[/tex] [tex]2 = 14+b[/tex] [tex]b = 2-14[/tex] [tex]b =-12[/tex]

Now that we know the slope and the y-intercept, we can finish off our equation as [tex]y = \frac{7}{2}x -12[/tex].

Hope this helped!

Is the following sequence arithmetic, geometric, or neither?
-6, -2, 2, 6, 10, ...

Answers

Answer:

gay lol lol

Step-by-step explanation:

wesd yessir gay mf

True or False? (2,-2) is the solution to the system of equations.
3x - 2y = 10
5x + 3y = 4
True
False

Answers

Answer:

True cuz they intercept at (2,-2) plz braliest me

Step-by-step explanation:

Is 16 bigger than 16 11/16?

Answers

no because 16 11/16 is greater than 16

Tell which number is greater.

0.086, 86%

Answers

Answer:

86%

Step-by-step explanation:

86% is greater

Explanation

86% as decimal = 86/100 = .86

Now u can tell that .86> .086

The trapezoid ABCD has bases AB = 15 and CD = 5, thigh AD = 9 and diagonal BD = 12. Find:

a) the height h

b) S

c) the perimeter P of the trapezoid

Please someone help me

Answers

Answer:

The height of the trapezoid is 6.63 units

The perimeter of the trapezoid is 38 units

Step-by-step explanation:

Whenever a geometry problem is given, it is often useful if it is sketched out. A sketch of this problem can be found in the image attached.

A)

We can see that a right-angled triangle is formed between points BED, with line BE being the height, h.

To get the dimensions of the line EB, we subtract the dimensions of DC from AB. This will give 15 -5 = 10

hence the dimensions of the righ angled triangle are

DE= h

DB = 12 (diagonal)

EB = 10

From Pythagoras' theorem,

[tex]h =\sqrt{12^2 -10^2}=6.63[/tex]

The height of the trapezoid is 6.63

B)

We can get the perimeter of the trapezoid by adding the dimensions of all four sides together.

This will be

AD + DC + CB + AB

However we can assume for this case that it is a symmetrical trapezoid, and hence AD = CB

Thus, perimeter =

2 (AD) + DC +AB

2(9) +5 +15 = 38.

The perimeter of the trapezoid is 38 units

Michelle has a round lamp to which she wants to add beads. The diameter is 12.2 inches. What is the circumference?

Answers

Answer: 38.34 inches

Step-by-step explanation:

The lamp is round which means that the circumference can be calculated by the formula:

= Pie * diameter

Pie = 22/7

Diameter = 12.2

Circumference = 22/7 * 12.2

= 38.34 inches

How much would your total be if you bought 2 lbs of ground
beef and 1 lb of steak?
Beef:$5.99$ per lb
Steak:$9.99 per lb

Answers

Answer:

$21.97

Step-by-step explanation:

2(5.99)+ 1(9.99) = 11.98 + 9.99 = 21.97

It would be 12$ because plus tax would be 6$ and 6+6 is 12

write an equation of a line that is parallel to y=3x-2 and runs through the point (1,6)

Answers

Answer:

y=3x+3

Step-by-step explanation:

If equations of lines are parallel, their slopes are the same. Therefore, we can sub '3' in for the slope value in y=mx+c to get y=3x+c.

Sub in the point:

6=3(1)+c

c=6-3=3

ANS: y=3x+3

Answer:

y = 3x + 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x - 2 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes, so

y = 3x + c ← is the partial equation

To find c substitute (1, 6) into the partial equation

6 = 3 + c ⇒ c = 6 - 3 = 3

y = 3x + 3 ← equation of parallel line

If a bike normally costs $150 but it is marked up
100% due to an increase in demand. How much
would it cost? *

Answers

Answer:

300

Step-by-step explanation:

100% of 150 is literally 150, add those together and you get 300.

Answer:

the answer is $300

Step-by-step explanation: when increasing by 100% it is the same as multiplying by 2

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