There are 18 girls in Mr. Brimley's math class. If 40% of the students are girls, what is the best estimation for the number of boys in the class?

Answers

Answer 1

Answer:

27 boiz

Step-by-step explanation:

Answer 2
27 boys are in the math class

Related Questions

Darius deposits $600 into a simple interest rate after a year the account balance will be $615 what is the interest rate?​

Answers

Answer:

2.5%

Step-by-step explanation:

Deposit = $600Time = 1 yearBalance after a year = $615

Interest amount is:

$615 - $600 = $15

Interest rate is:

15/600*100% = 2.5%

Answer: the guy above me is right its 2.5%

Step-by-step explanation: 15/600 = 2.5/10

Please help me, I do not understand.

Answers

9514 1404 393

Answer:

  p : q = 3 : 2

Step-by-step explanation:

You are given sufficient information to write two relations involving p and q. We presume these will be sufficient to find an answer to the question. We will be able to find p and q. Then we can find their ratio, as the problem asks.

  (p-15)/(q-15) = 2/1

  (p+30)/(q+30) = 5/4

__

From the first equation, we get ...

  p -15 = 2(q -15)

  p = 2q -15 . . . . . . . add 15, simplify

From the second equation, we get ...

  4(p +30) = 5(q +30)

  4p + 120 = 5q + 150

  4p = 5q + 30

Using the first equation to substitute for p, we have ...

  4(2q -15) = 5q +30

  8q -60 = 5q +30 . . .  eliminate parentheses

  3q = 90 . . . . . . . . . . . add 60-5q to both sides

  q = 30 . . . . . . . . . . . . divide by 3

  p = 2q -15 = 2(30) -15 = 45

Then the desired ratio is ...

  p : q = 45 : 30

  p : q = 3 : 2

What is this ? x<-2 .....HELP please ! ( sorry if the picture is blurry)

Answers

Answer:

A)  x < -3

Step-by-step explanation:

PLEASE HELP
Solve the equation. Type just the numeral answer. Do NOT round your solution.
-5=b-2.3
b=

Answers

Answer:

The value of b = -2.7

Step-by-step explanation:

Given

As  the equation is given by

[tex]-5=b-2.3[/tex]

To determine

Solve the equation for b

Given the equation

[tex]-5=b-2.3[/tex]

switch the sides

[tex]b-2.3=-5[/tex]

Add 2.3 to both sides

[tex]b-2.3+2.3=-5+2.3[/tex]

Simplify

[tex]b=-2.7[/tex]

Therefore, the value of b = -2.7

Answer:

b = -2.7

Step-by-step explanation:

Have a great day

Nathaniel is going to invest $76,000 and leave it in an account for 18 years. Assuming the interest is compounded continuously, what interest rate, to the nearest tenth of a percent, would be required in order for Nathaniel to end up with $100,000?​

Answers

Answer:

did you ever get the answer bc I have this and need help pls and thank you

Step-by-step explanation:

Answer:

Step-by-step explanation:

1.5%

please help me with this


here is the answer choices
25/20
20/25
25/15
15/25

Answers

Answer:

20 /25

Step-by-step explanation:

sin is the opposite side over the hypotenuse

sin C = NB/ NC

         = 20/25

the answer is 20/25

You can work a total of no more than 15 hours each week at your two jobs. Housecleaning pays $8 per hour and your sales job pays $10 per hour.
You need to earn at least $130 each week to pay your bills.

Write a system of inequalities to represent this situation. DO NOT SOLVE.
Let x = # of hours housecleaning and y = # of hours at the sales job

Answers

8x + 10y = 130 is the equation
Equation is 130= 8x + 10y

The average depth of five lakes is 229m. If none of the lakes is less than 194m deep then the greatest possible depth of one of these lakes in meters is,

Answers

Answer:

The average depth of five lakes is 229m. If none of the lakes is less than 194m deep then the greatest possible depth of one of these lakes in meters is,

Answer:

369

Step-by-step explanation:

* = Multiply

5*229=1145
Lakes * Average = Total Average Depth of Five Lakes

(1145-369)/4=194 (it worked)
4 is the other lakes, 369 would be considered the largest lake.
Answer is 369.

Cheers, iYekria

Which point is located at (-3,6)

A) A

B) B

C) C

D) D

Answers

Answer is A

Step-by-step explanation:

Go over to the left 3 times then up 6

On a coordinate plane, how are the locations of the points (7 , -9) and (-7 , 9) related?

Answers

Answer:

11 units.

They both are on the x axis of 9. The distance between -7 and 4 is 11 units, therefore that is why the answer is 11.

Step-by-step explanation:

They are reflected over the x axis.

Yesterday, a parking lot had 60 cars parked in it. Of the cars parked in the parking lot, 40% were silver, 14 were red, and the rest were blue. How many of the cars were blue?
A. 24 cars
B. 38 cars
C. 22 cars
D. 6 cars

Answers

Answer:

C. 22 Cars are Blue

Answer:

22

Step-by-step explanation:

no:of silver cars=60*40/100 ie 24

no:of red cars ie 14

total cars=silver+red+blue

60=24+14+blue

60=38+blue

blue cars=60-38

ie 22

Enter two or moro numbers in the table to create a
histogram
Data
Enter the data to create a histogram. Then check all
that apply
runs
17
1
6
12868
0
The histogram has 1 cluster,
The histogram has 2 clusters,
The histogram has 1 peak,
The histogram has 4 peaks,
The histogram has 0 frequency from 4-5.
Show histogram

Answers

Answer:

b The histogram has 2 clusters.

c The histogram has 1 peak.

e The histogram has 0 frequency from 4-5.

Step-by-step explanation:

Answer: rileyayers85 is correct

Step-by-step explanation:

I got the answer right

factor 42z+68.

simplify and factor 3(x - 2) + 9(x + 1) + 5(1 + 2x) + 2(3x - 4)

Answers

Step-by-step explanation:

step 1. so - this is 2 questions?

step 2. 42z + 68 = 2(21z + 34)

step 3. next -> 3x - 6 + 9x + 9 + 5 + 10x + 6x - 8

step 4. 28x + 0

I need help can someone help me that is good in math.

Answers

Number4

The area is 230

the perimeter is 66

simplify the expression and combine like terms. 4 (z - 2) + 2 (z - 1)

Answers

4 (z - 2) + 2 (z -1)
(4)^(z)+(4)(-2)+(2)^(z)
= 4z+-8+2z+-2
= -4z+-8+2z+-2
=(4z+2z)+(-8+-2)
= 6z+-10

The preimeter of the rectangle is 154 feet.The length of the rectangle is 55 feet.What is the width of the rectangle.

Answers

Answer:

22

Step-by-step explanation:

The preimeter is adding all sides together. I took 154-55 twice sense we have four sides of a rectangle and two are lengths. after that i got 44. I then just remembered we had two sides left so divided that by 2 and got 22

system of equations

Answers

Answer:1:(2,7)

2:i or (1,-3)

3:is c or (-15,-25)

Step-by-step explanation:like if this helped mark me brainlest please

Answer:

(2,7)

(1,-3)

(-15,-25)

Step-by-step explanation:

Because both equations are equal to the same thing (y) we can just set them equal to each other and solve for x

4x-1=2x+3

solve for x

4x=2x+4

2x=4

x=2

We know that x=2 and can plug this value in for x into any of the beginning equations

4(2)-1=y

7=y

The answer is (2,7)

2.) We can do the exact same process as question one

x-4= -3x

-4= -4x

x=1

plug this x value in into any of the starting equations

1-4=y

-3=y

The answer is (1,-3)

3.) Same deal as the other two

x-10=2x+5

-x=15

x= -15

Plug this value in for x into any beginning equation

2(-15)+5

-30+5

y= -25

(-15,-25)

I really don’t understand this question can someone please help i hope im not taking a lot of time out of your day

Answers

Answer:

A is correct I think

Step-by-step explanation:

Your not taking time from me

i need help bad so please help

Answers

Answer:

7

Step-by-step explanation:

Answer:

The answer to this would be +7 yards

Step-by-step explanation:

I tried my best...please mark me brainliest and I hope you have a fantastic day!

X + 9= -2
its algebra and im not quite sure about it because i dont pay attention in math class and the graph makes no sense

Answers

Ok so I know the answere it is -11

-7x – 2y = 14
6х + бу = 18

Answers

Answer:

es 8 ksnfjskausksufbab 726+47272774

Answer:

(x. y) =(4, 7)

Step-by-step explanation:

-7 x - 2 y = 14

6 x + 6 y = 18

Solve the equation

x = - 2/7 y

6 x + 6 y = 18

Substitute the value of x

6 ( - 2 - 2/7y) + 6 y = 18

Solve the equation

y = 7

Substitute the value of y

x = - 2 - 2/7 x 7

Solve the equation

x = - 4

A possible solution is

(x, y) = (- 4, 7)

Check the solution

- 7 x ( - 4) - 2 x 7 = 14

6 x ( - 4) + 6 x 7 = 18

Simplify

14 = 14

18 = 18

The ordered pair is the solution

(x, y) = ( - 4, 7)

Boom!

Help, how do i do this problem and I really need this

Answers

Okay, so one of the geometric theorems is that two of the inside angles equals the outside angle in a situation like this one.

So, set them equal:
2x+ 2 + 4x + 8 = 8x - 30

Combine like terms:
6x + 10 = 8x - 30

40 = 2x

x = 20

3/5 x 11 .................

Answers

Answer:

=6 3/5 or 33/5

Step-by-step explanation:

3/5 * 11

33/5

= 6 3/5

Step-by-step explanation:

[tex]{ \large{ \red{ ➠ \: \: \bf{ \frac{3}{5} \times 11}}}} \\ [/tex]

[tex]{ \large{ \blue{ ➠ \: \: \bf \frac{33}{5} }}}[/tex]

[tex]{ \large{ \green{ \therefore{ \boxed{ \bf6 \frac{3}{5} }} \: \: Ans}}}[/tex]

Miss Johnson gave her class the following equation 8x - 20=15 + x solve the equation to show their work has been in.christina and Jamar solve the equation 2 different ways and debate about which person was correct.who solved the equation correctly?
a.CHRISTINA
B.JAMAR
C.BOTH
why do you think you are correct in your choosing support your answer with details​

Answers

Answer:

Both solved it correctly

Step-by-step explanation:

who ever answers this first gets brainly

Answers

Answer: A

im sure

Step-by-step explanation:

Answer:

The answer is D

Step-by-step explanation:

C = πd

hope this helps xx

-(10)=1000

{True or False}

free 50​

Answers

Answer:

false

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

-(10) will still be -10, youre just multiplying the sign by the number

it took katie4 hours to knit 9 scarves how many scarves could you make in 24 hours ​

Answers

Answer:

54 scarves

Step-by-step explanation:

4 hours-9 scarves

8 hours-18 scarves

12hours -27 scarves

16 hours-36 scarves

20 hours-45 scarves

24 hours-54 scarves

pattern: h+4 (hours)  s+9 (scarves)

Give an example of a proportion that uses the numbers 2, 3, 4 and 6.

Answers

Give an example of a proportion that uses the numbers 2, 3, 4 and 6.

2:3 is the same as 4:6

Proportion says that two ratios (or fractions) are equal.

the length of a boat is 10.8 m Boris buys a scale model of the boat the scale of the model is 1 to 18 work out the length of the scale model of the boat give your answer in centimetres​

Answers

Answer:

The size of the scale model is 60 centimeters.

Step-by-step explanation:

Given that the length of a boat is 10.8 m, and Boris buys a scale model of the boat whose ratio is 1 to 18, to determine the length of the scale model of the boat in centimeters the following calculation must be performed:

1m = 100cm

10.8 m = (10.8 x 100) = 1080 cm

1080/18 = X

60 = X

Therefore, the size of the scale model is 60 centimeters.


Find the slope of the line that
passes through the following
points. (-5, -10), (-5, 15)

Answers

the slope is infinity
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