Consider the ratio of boys to girls of 4:5.
a) What is the total number of parts?
b) What fraction of the total are boys?
c) What fraction of the total are girls?
d)If there were 18 students in total,how many of them are boys?
e)If there were 18 students in total, how many of them are girls?

Answers

Answer 1

Step-by-step explanation:

[tex]a)[/tex]

[tex]4+5=9 (parts)[/tex]

[tex]b)[/tex]  our total is [tex]9[/tex] our boys are [tex]4\\[/tex]

our fraction is [tex]^4/_9[/tex]

[tex]c)[/tex]    [tex]^5/_9[/tex]

[tex]d)[/tex] our whole used to be [tex]9[/tex] but we doubled it so it is [tex]18[/tex]

so we double [tex]4[/tex] which equals [tex]8[/tex]

[tex]^8/_{18}[/tex]

[tex]e)[/tex] [tex]^{10}/_{18}[/tex]

Brainliest please


Related Questions

STATION 6 ! 100 POINTS !!

Answers

Answer:

svb the actual cost of a few minutes ago to

It’s blurry… sorry, hope your having a great day tho

Which is  greater 5.200 or 5.002.

Answers

5.2
5.200 can be written as 5.2
5.2 is greater than 5.002
When we round 5.002 to 1dp we get 5.0
5.0<5.2
Therefore 5.2 is greater
5.2 is greater because the 2 on 5.200 is in the hundred and lace and the other is in the one play so would you want 5 thousand 200 dollars or 5,000 dollars and 2 cent

Find the perimeter. Simplify your answer.

Answers

Answer:

p=1 2 + 2

Step-by-step explanation:

I have already answered this question. I will paste it below.

Find the perimeter of this figure. Enter your answer in the box.
(-7 , 3) (8 , 3) (-7 , -1) (2 , -1) (2 , -8) (8 , -8)

Answers

Answer:

56 total units

Step-by-step explanation:

Here is what the plane would look like if the figure and points were drawn.

Answer:

52 units

Step-by-step explanation:

Plot the points and connect.

Note. If you connect the points in the given order you will end up with a weird figure hence we connect as pictured.

Horizontal sides sum to:

2*(8  - (-7)) = 2*15 = 30

Vertical sides sum to:

2*(8  - (-3)) = 2*11 = 22

The perimeter is:

30 + 22 = 52

Three times a number is three more than twice the number. Which equation can be used to find the value of x, the unknown number? 3x = 3 2x x = 3 2x 3x 3 = 2x 3x = 3 2 x.

Answers

We can begin by assigning a variable to the unknown number; in this case a number. Let's call this unknown number x (as that is the variable that the answer choices are given in terms of). Once we have our variable, we can begin to translate the written problem into numbers.

"Three times a number" implies multiplication of x by 3.
"is" indicates an = sign.
"three more" implies addition of 3.
"twice the number" can be translated to multiply x by 2.

Adding all of these together we get 3x=3 + 2x.

Answer:

A

Step-by-step explanation:

Fill in the blank with the correct math term, and give an example of each.

A. A(n) ________is a mathematical relationship that uses one or more variables, numbers or operation symbols.

Example:

B. A(n)________is a symbol that can be replaced by a number in a mathematical expression or equation.

Example:

C. A(n)_________is a mathematical sentence with an equal sign

Example:

Hellooo! Can someone please help me with this. I’m struggling, and need help. if u can help i would appreciate it. Also on the example parts please give a example, thank u.

Answers

A. A(n) equation is a mathematical relationship that uses one or more variables, numbers, or operation symbols.

B. A(n) variable is a symbol that can be replaced by a number in a mathematical expression or equation.

C. A(n) equation is a mathematical sentence with an equal sign.

A. A(n) equation is a mathematical relationship that uses one or more variables, numbers, or operation symbols.

Example: The variable "x" is used in the equation 2x + 3 = 7. It demonstrates the relationship that arises when "x" is multiplied by 2, added to 3, and the result is 7 as the outcome.

B. A(n) variable is a symbol that can be replaced by a number in a mathematical expression or equation.

Example: In the equation 3y + 2 = 11, "Y" is the variable. The equation can be solved by changing the value of "y," which can take on a variety of possibilities.

C. A(n) equation is a mathematical sentence with an equal sign.

Example: 4 + 5 = 9 is an illustration of an equation. It states that combining 4 and 5 yields the number 9. The equal symbol denotes the equality or balance of the two sides of the equation.

Explanation:

A. An equation is a statement that demonstrates the relationship between different quantities, variables, or numbers using mathematical operations. It might have a variable or several that need to be figured out in order to arrive at a particular value or link.

B. A variable is a symbol that is used to signify an ambiguous or fluctuating quantity in mathematical statements or equations. It is made flexible and generic to represent different values or relationships inside the confines of a mathematical issue.

C. An equation is a mathematical statement that establishes the equality of two expressions by using the equal sign. It indicates that the values of the two sides of the equation are equal or the same. In order to show mathematical relationships and properties, equations are frequently utilised.

For more such questions on mathematical relationship, click on:

https://brainly.com/question/28936736

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Expand & simplify
(4x + 7)(x – 5)

Answers

Answer:

(4^3−13−35)

Step-by-step explanation:

this ans

The answer is 4x^2-13x-35
I used distributive prop.

if a sprinkler waters 1/14 of a lawn in 1/2 an hour, how much time it will take to water the entire lawn

Answers

1/14 in 30 mins
30 mins x 14=420 mins
420 mins in hours =7 hours

Raina's penny bank is  1/4  full. After she adds  360  pennies, it is  5/8  full. How many pennies can Raina's bank hold? ​

Answers

Answer:

960

Step-by-step explanation:

We start with the variable "x". Let's call "x" Raina's penny bank.

After adding 360 pennies, at the end, she has 5/8x, or 5/8.

So we start with

(1/4)x + 360 = 5/8x

Let's subtract 1/4x from both sides

360 = 5/8x - 1/4x

Remember, we need to use common denominators to subtract, so 1/4 becomes 2/8

360 = 5/8x - 2/8x

Now we simplify to get

360=3/8x

Multiply the reciprocal of 3/8 to both sides which is 8/3

360 * 8/3 = x

Answer is 960 pennies.

Therefore Raina's bank hold 960 pennies.

Answer:

we need to get the same number below to make it easier. so 1/4 will be equal to 2/8.

then she adds 360 pennies so it's 5/8 full.

therefore, the 360 pennies = 3/8 full

because 5/8 - 2/8 = 3/8.

now, we need to divide 360/3 so we can get how much pennies when it's 1/8 full.

360 pennies/3 = 120 pennies = 1/8 full.

now to get a full bank we just need to multiply 120 x 8 because 1/8 x 8 = 1 which means a full fraction.

120 pennies x 8 = 960 pennies.

Raina's bank can hold up to 960 pennies.

find the scale figure from A to B.
scale figure A= 16 cm,8cm,20 cm
scale figure B=12cm,6cm,15cm

Answers

Answer:

The scale factor is 4/3 or 1.333...

Step-by-step explanation:

We're trying to find how can A go to B

Example: 16 --> 12

16 Divided by 12 = 4/3

[tex]\frac{16}{1}[/tex]÷[tex]\frac{12}{1} = \frac{16}{1} * \frac{1}{12} = \frac{16}{12} = \frac{4}{3}[/tex]

This will work with other numbers too.

the acceleration in centimeters per second of a projectile is modeled by

Answers

Answer:

The Acceleration, In Centimeters Per Second Per Second, Of A Projectile Is Modeled By A (T) = 21" - 156 + 36, Where T Is Measured in seconds

James deposited $575 into a bank account that earned 5.5% simple interest each year. No money was deposited into or withdrawn from the account.

How much money was in the account after ​ ​ 212 ​ ​ years?

Round your answer to the nearest cent.

Answers

Answer:

Answer:it's 654.06I just did the test

Step-by-step explanation:

please help i'm so confused
P: It's sunny.
Q: It's snowing.
R: It's not raining
Translate the following symbols: ~ RAQ
O If it's raining, then it's snowing.
O If it's not raining, then it's sunny.
O It's raining and it's snowing
O It's raining or it's snowing

Answers

Answer:

if it's bot raining, then it's sunny


Find the area of a circle with a radius of 6 feet. Use 3.14 for pi

Answers

Answer:

Replace the value of r in the formula :

A = π • r²

A = π • 6²

A = 113,097

Since you need to round off your answer to one decimal, your final answer is :

A = 113.1 square ft

Step-by-step explanation:

Ms. Suzuki is buying soda for the pizza party her class earned. She estimates that each of her
24 students will drink 250 milliliters of soda on average. How many 2-liter bottles of soda
should she buy?

Answers

Answer:

6

Step-by-step explanation:

250 mL is 0.25 L or 1/4 L.

1 L is enough for 4 students.

A 2-L bottles is enough for 8 students.

Since 24 students is 3 times 8 students, you need 3 times a 2-liter bottle.

Answer: 3

Which is the simplified form of r Superscript negative 7 Baseline + s Superscript negative 12?
StartFraction 1 Over r Superscript 7 Baseline s Superscript 12 EndFraction
Negative r Superscript 7 Baseline minus s Superscript 12
StartFraction r Superscript 7 Over s Superscript 12 EndFraction
StartFraction 1 Over r Superscript 7 Baseline EndFraction + StartFraction 1 Over s Superscript 12 EndFraction

Answers

I can’t even read that but the answer is 3 I think

Answer:

im pretty sure its D

Step-by-step explanation:

-8 + x - 2 - 5x
Plssss

Answers

Answer:

-4x-10

Step-by-step explanation:

This is the answer if you are simplifying the expression.

Answer:

−  4    −  8

Step-by-step explanation:

Solve (x-1)(x+5)=0 using zero product property

Answers

the answer is 1 im pretty sure

if f(x) = (3+x)/(x-3), what is f(a+2)​

Answers

Answer:

B

Step-by-step explanation:

To evaluate f(a + 2), substitute x = a + 2 into f(x), that is

f(a + 2) = [tex]\frac{3+a+2}{a+2-3}[/tex] = [tex]\frac{5+a}{a-1}[/tex]

I need help with these two questions!! HELP

Answers

Answer:

AB and GF are skew

DH and BF are II

EF and HG are skew

ABCD and EFGH are II

Step-by-step explanation:

II is parralell or side by side.

Skew would be like intercepting with one another.

Have an awesome day! :D

Find the distance between the pair of points.

E(-6, 4) and F(5, 4)


The distance between the pair of points is _____ units?​

Answers

Answer:

11 units

Step-by-step explanation:

Just trust me!

i need help QUICK!!!

Answers

Answer:

okie

Step-by-step explanation:

but the q is blurry very blurry send again

Jared has four pieces of rope that are each 12.75 feet long. How many feet of rope does he have in total?

51 feet
50.8 feet
16.75 feet
12.79 feet

Answer=51 Feet

Answers

I am pretty sure the answer is-51 Feet

Pls help i am so lost

Answers

Answer:

x= 90 degrees

y=43 degrees

Step-by-step explanation:

Given that a randomly chosen flight arrives in Atlanta (ATL), what is the probability that it arrives on time?

Answers

Using the given percentage, it is found that there is a 0.877 = 87.7% probability that it arrives on time.

A probability is the number of desired outcomes divided by the number of total outcomes.Over a large sample, a percentage can be interpreted the same as a probability.

In this question, over a large number of flights, 87.7% arrive on time in Atlanta. Hence, there is a 0.877 = 87.7% probability that it arrives on time.

For more on probabilities, you can check https://brainly.com/question/15536019

math word problem: if jill takes a pill every 3 days and joe takes it every 4 for 65 days how many times will they take the pills together

Answers

Jill will have taken 21 in 65 days because 65 divided by 3 is 21.6666666667.

Joe will have taken 16 in 65 days because 65 divided by 4 is 16.25.

I just need someone to explain this to me.

Answers

Answer:

23.6

Step-by-step explanation:

Answer:

23.6 is the correct answer

angles of triangle sand explain how u got each question and answer pls ! ((:

Answers

Answer:

m∠1 = 41°

m∠2 = 85°

m∠3 = 95°

m∠4 = 85°

m∠5 = 36°

m∠6 = 49°

m∠7 = 96°

Step-by-step explanation:

Alright, so to start we have 2 quadrilaterals intersecting to form a triangle, which means that in the shapes with 4 angles, all angles will add up to 360°, while the triangle's angles will add up to 180°

Right off the bat, we can tell that ∠3 and ∠95° are going to be the same, because they're at a perpendicular intersection, which also means that ∠2 and ∠4 will be the same as well

Knowing the ∠3 = 95° means that ∠5 and ∠6 must add up to equal 85°, so that the whole of the triangle equals 180°

Considering that in the first quadrilateral we already have ∠90° and ∠144°, this means that ∠1 and ∠2 have to add up to 126°, to make an even 360° total

If ∠95° is supplementary to ∠2, this means ∠2 = 85°, and since ∠4 and ∠2 are the same, ∠4 also equals 85° - This leaves 41° left for ∠1, and now we can move on to the other quadrilateral

So since we know ∠4 = 85°, and we already have ∠38°, this means that ∠7 and the unmarked angle will add up to equal 237°, so that the entire shape has 360°

Since we know that ∠5 and ∠144° are supplementary, this means ∠5 is equal to 36°, which would make ∠6 = 39°

And lastly we have ∠7, which since ∠6 = 39° this means our unmarked supplementary angle must equal 141° - Now that means that ∠4 + ∠38° + ∠141° = 264° out of 360°, which leaves ∠7 to equal 96°


Convert 27^ 2/3 into radical form.

Answers

Answer:

243

Step-by-step explanation:

Simplify

27^2 / 3

729 divided by 3

= 243

Find the pressure if a force of 750 N acts on an area of 12 cm3

Answers

The answer is P=F/A I had a quiz on these
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