The ratio of boys to girls at a movie is 4:7. If there are 21. girls, how many boys are
at the movie?

Answers

Answer 1

Answer:

12

Step-by-step explanation:

7*3=21 so 4*3=12


Related Questions

One-fourth of a number is 22. Find the number.

Answers

Answer:

5.50

Step-by-step explanation:

I am smart

The length of a football field including the end zones is 48 feet longer than four times the length of a tennis
court. It is also 282 feet longer than a tennis court.
How long is the foorball field?
How long is the tennis court?

Answers

Answer:  

T=78 feet (Tennis court)

360 feet (Football Filed)

Step-by-step explanation:

4T+48 = T+282

The length of the football field is 360 feet.

The length of the tennis court is 78 feet.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We have to given that;

The length of a football field including the end zones is 48 feet longer than four times the length of a tennis court.

And,  It is also 282 feet longer than a tennis court.

Let the length of the tennis court = x

So, The length of the football field = 48 + 4x

Here, The length of the football field is 282 feet longer than a tennis court.

So, We get;

⇒ 48 + 4x = 282 + x

⇒ 4x - x = 282 - 48

⇒ 3x = 234

⇒ x = 78

Thus, The length of the football field = 48 + 4x

                                                         = 48 + 4×78

                                                         = 48 + 312

                                                          = 360 feet

The length of the tennis court = x

                                              = 78 feet

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ2

eleven times one number is 9 more than 8 times another number. the first number minus four is half the second number. find the numbers.

Answers

Answer:

haha...the first number is 55 & the second number is 102.

if am right, pls sende more of this question or even more complicated quest of this type.

Write 3/4 cup per 1/2 serving as a unit rate

Answers

Answer: Unit rate = 1 1/2 cups per serving

Step-by-step explanation:

1/2 serving has = 3/4 cup

1 serving will have = 3/4 1/2 = 3/4 x 2/1 = 6/4 = 6 ÷ 2/ 4 ÷ 2 = 3/2 = 1 1/2cups

I NEED HELP RIGHT NOW!!! PLEASE!
what is the value of 5 in 0.459

Answers

Answer:

Place value= hundreds place

or, 0.05

In the figure shown, t || X and k l w and m23 = 20° Choose the list which includes all of the other angles that measure 20°
1615
13 14
1\2
43
k
11 10
129
5 6
87
w
0 A 1
B. 1, 5, 7
C. 1. 14. 16
0 D. 1.5. 7. 9, 11, 14, 16

Answers

Answer:

D. 1, 5, 7, 9, 11, 14, 16

Step-by-step explanation:

The following angles has the same measure as <3 = 20°:

m<7 = m<3 (corresponding angles are congruent)

m<5 = m<3 (alternate interior angles are congruent)

m<1 = m<3 (vertical angles are congruent)

m<14 = m<3 (corresponding angles are congruent)

m<16 = m<3 (alternate exterior angles are congruent)

m<9 = m<14 = m<3 (corresponding angles are congruent)

m<11 = m<9 = m<3 (vertical angles theorem and corresponding angles theorem)

Therefore, angles labelled D. 1, 5, 7, 9, 11, 14, and 16 all have the measure of 20°.

What property is this an example of ... 56 + 82 = 82 + 56?

Answers

Answer:

Inverse equations

Step-by-step explanation:

Answer: Commutative Property

Step-by-step explanation:

a + b = b + a

On Monday, Jason ran x miles. On Tuesday, he ran 5 fewer miles than on Monday. The total number of miles Jason ran over these two days can be found using 2x−5 .

What does the "2" represent in the expression 2x−5 ?


the number of miles Jason ran on Tuesday

how many fewer miles Jason ran on Tuesday

the total number of miles ran

the number of days

Answers

Answer:

The number of days

Step-by-step explanation:

230.071 in expanded form

Answers

200+30+0+0.70+0.01

Hope it's right

Answer:

Expanded Notation Form:

 200  

+ 30  

+ 0  

+   0.0

+   0.07

+   0.001

Expanded Factors Form:

 2 × 100  

+ 3 × 10  

+ 0 × 1  

+ 0 ×   0.1

+ 7 ×   0.01

+ 1 ×   0.001

Expanded Exponential Form:

2 × 102

+ 3 × 101

+ 0 × 100

+ 0 × 10-1

+ 7 × 10-2

+ 1 × 10-3

Word Form:

two hundred thirty and seventy-one thousandths

Step-by-step explanation:

solve and graph the inequality: 8-4(x-1)

Answers

Answer:

-4

Step-by-step explanation:

4x=-1

4x/-1=-4

which is the equation of a line that has a slope of 1/2 and passes through point (2,-3)

Answers

Answer:

y = (1/2)x - 4

Step-by-step explanation:

y = mx + b

y = (1/2)x + b

-3 = (1/2)(2) + b

-3 = 1 + b

b = -4

y = (1/2)x - 4

for a walkathon a sponsor committed to give you a flat fee $5 plus $2 for every mile m you walk.
A.write an expression for the total amount you will collect from your sponsor at the end of the walkathon

B. then evaluate your expression for 20 miles walked

Answers

5a x 2m= I hope that’s close to what you’re needing.

The lowest temperature on Mars can reach –140°C while the highest temperature can be 20°C. What is the difference between the highest and lowest temperatures on Mars?

Answers

I think that the answer is 120

What is 9% of 31? Do not round, write the exact amount

Answers

Answer:

2.79

Step-by-step explanation:

1. The video store rented 42 videotapes on
Monday, 35 on Tuesday, 51 on
Wednesday, and 32 on Thursday. What
was the average number of videotapes
initially rented per day from Monday to
Thursday if all were one-day rentals?
A. 37
B. 38
C. 40
E. 54

Answers

Answer:

C. 40

Step-by-step explanation:

average = (42 + 35 + 51 + 32)/4 = 40

Answer: C. 40


Convert the standard form quadratic equtaion y= x2 + 4x + 2 to vertex form.

A) y= 2 (X - 5)2 + 1
B) y= (x + 2)2-2
C) y=(x - 2)2-5
D) y= 5x - 2

Answers

Answer:

B

Step-by-step explanation:

B is the right answer

whats 8989898 x 675 lol

Answers

Answer: 6068181150 lol

Step-by-step explanation:

9998799098

Step-by-step explanation:

idrk

Find the domain of the function expressed by the formula: y=x²+8
Please help ASAP.

Answers

Answer:

x is all real numbers.

Step-by-step explanation:

The domain of a function is a set of all real numbers.

Solve the equation and enter the value of x below.
x + 29 = 49
X =

Answers

Answer:

x = 20

Step-by-step explanation:

x + 29 = 49

- 29       - 29

x=20

RrrrrrrRawrrrr
RAWRRR

Answers

Answer:

nsbdhdhshsnsnsbdbxbxb

Step-by-step explanation:

bshdhdhdhdhd

Haha yes lions and tigers go rawrrrrrr

I WILL AWARD BRAINLIEST!! PLEASE HELP!!


Given: AC = AB, CD = DE

m∠ABC = 70°, m∠ ECB = 35°


Prove: DE ║BC



m∠ACB = m∠______, By reason ( Base angles theorem, Exterior Angle theorem, Supplementary angles, Vertical Angles theorem ) - choose one

Answers

Answer:

a)[tex]\angle ACB = \angle ABC[/tex] By Base angle theorem

b)DE||BC since[tex]\angle DEC=\angle ECB[/tex] and they are alternate interior angles

Step-by-step explanation:

Given: AC = AB, CD = DE

∠ABC = 70°, m∠ ECB = 35°

Refer the attached figure

AB = AC

So, By Base angle theorem : if the sides of a triangle are congruent then the angles opposite these sides are congruent.

So, [tex]\angle ACB = \angle ABC[/tex]

So,[tex]\angle ACB = \angle ABC =70^{\circ[/tex]      ----1

CD = DE

So, by Base theorem

[tex]\angle DCE = \angle DEC[/tex]

Let [tex]\angle DCE[/tex]  be x

So,[tex]\angle DCE = \angle DEC[/tex]

[tex]\angle ACB= \angle DCE+\angle ECB = x+35[/tex]

Using 1

70 = x+35

35=x

[tex]\angle DCE = \angle DEC =35^{\circ}[/tex]

Now[tex]\angle DEC=\angle ECB=35^{\circ}[/tex]

So, DE||BC since[tex]\angle DEC=\angle ECB[/tex] and they are alternate interior angles

How do you write 31 billon in scientific notation

Answers

Answer:

3.10E+10 (3.10 x 10 10)

Step-by-step explanation:

You start at (3,-2). You move down 1 unit and up 3 units. Where do you end?

Answers

Answer:

3,0

Step-by-step explanation:

The y coordinate goes down one unit to -3, then up 3 units to 0.

expand and simplify (x-1)(x-3)

Answers

Answer:

x squared -3x-1x+4= x squared -4x+4

Is the relation represented in this table a function? Helppp

Answers

The answer is no because the numbers are repeated

-40-2(3m+1/2)=7m-2 what does m equal

Answers

Answer: [tex]m[/tex] = −3

Step-by-step explanation:

Hey there! I will give the following steps, if you have any questions feel free to ask me in the comments below.

Step 1: Expand.

−40 − 6[tex]m[/tex] − 1 = 7[tex]m[/tex] − 2

Step 2: Simplify −40 − 6[tex]m[/tex] − 1 to −6[tex]m[/tex] − 41.

−6[tex]m[/tex] − 41 = 7[tex]m[/tex] − 2

Step 3: Add 6[tex]m[/tex] to both sides.

−41 = 7[tex]m[/tex] − 2 + 6[tex]m[/tex]

Step 4: Simplify 7[tex]m[/tex] − 2 + 6[tex]m[/tex] to 13[tex]m[/tex] − 2.

−41 = 13[tex]m[/tex] − 2

Step 5: Add 2 to both sides

−41 + 2 = 13[tex]m[/tex]

Step 6: Simplify −41 + 2 to −39.

−39 = 13[tex]m[/tex]

Step 7: Divide both sides by 13.

−[tex]\frac{39}{13}[/tex] = [tex]m[/tex]

Step 8: Simplify [tex]\frac{39}{13}[/tex] to 3.

−3 = m

Step 9: Switch sides.

[tex]m[/tex] = −3

~I hope I helped you! :)~

What is the result when 4x3 + 4x² + 13x + 6 is divided by 2x + 1?

Answers

Answer:

2x^2+x+6

Step-by-step explanation:

if the 4x3 meant 4x^3, then im pretty sure this is the correct answer

If neither a nor bare equal to zero, which answer most accurately describes the product of (a + b)(a - b)?

Answers

Answer:

a² - b²

Step-by-step explanation:

We can recognize (a + b)(a - b) as a difference of squares.

Step 1: Write expression

(a + b)(a - b)

Step 2: FOIL (Expand)

a² - ab + ab - b²

Step 3: Combine like terms

a² - b²

Need help with this problem

Answers

Answer:

y = -3x + 8

I've done the steps in the photo

Hope it helps (。・ω・。)

Answer:

y = - 3x + 8

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 )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (8, - 16) and (x₂, y₂ ) = (1, 5)

m = [tex]\frac{5+16}{1-8}[/tex] = [tex]\frac{21}{-7}[/tex] = - 3 , thus

y = - 3x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (1, 5 ) , then

5 = - 3 + c ⇒ c = 5 + 3 = 8

y = - 3x + 8 ← equation of line

A baseball stadium holds 15,002 seats. The lower level has 50 fewer than three times as many seats as the upper level. The middle level has 40 more than twice as many seats as the upper level.

x + (2x + 40) + (3x – 50) = 15,002

The upper level has how many seats

Answers

The Answer is X = 2,502

Answer:

The equation x + (2 x + 40)  + (3 x - 50)   =  15,002 represents this scenario suitable.

Step-by-step explanation:

Hope it helps :)

I know I'm answering all your questions it's just bc I'm bored

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