Mathematics College

A small school has 78 students. If 24 of the students are boys, what is the ratio of girls to boys?

Answers

Answer 1

Answer:

a

Step-by-step explanation:

Answer 2

Answer:

54 girls

Step-by-step explanation:

Related Questions

If LN = 6x - 5, LM = x + 7, and MN = 3x + 20, find MN

Answers

Answer:

68

Step-by-step explanation:

LM   +    MN     =   LN

x + 7  + 3x + 20 = 6x - 5

           4x + 27 = 6x - 5

          -4x         -4x      

                   27 = 2x - 5

                    +5        +5

                   32  = 2x

                   ÷2   ÷2    

                    16 = x

MN: 3x + 20

      3(16) + 20

        48   + 20

              68

The general solution to the second-order differential equation y″+6y′−40y=0 is in the form y(x)=c1er1x+c2er2x. Find the values of r1 and r2.

Answers

Answer:

r1 = 4 and r2 = -10 and the final equation will be  C1e^4x + C2e^-10x

Step-by-step explanation:

The general solution to the second order differential equation

y'' + 6y' -40y=0

substitute y= e^rx

y' = re^rx

y'' = r^2*e^rx

The equation will be

r^2*e^rx + 6r*e^rx - 40*e^rx = 0

e^rx ([tex]\\r^2 + 6r - 40[/tex]) = 0  

Characteristic equation = [tex]\\r^2 + 6r - 40[/tex]

                             = [tex]r^2 +10r - 4r -40\\[/tex]

                               = r(r+10) - 4(r+10)

                                = (r-4)(r+10)

                               r1 = 4 and r2=  -10

y = e^4x  and y = e^-10x

the equation will be C1e^4x + C2e^-10x

What’s 8/3 - 2/6 need in a reduced fraction

Answers

Answer:

7/3 or 2 1/3

Step-by-step explanation:

8/3 -2/6

Need a common denominator

Multiply 8/3 × 2/2

16/6 - 2/6

Subtract the numerators

14/6

simplify

7/3 or 2 1/3

7/3 or 1/2 because it tells you to decide it

HELP FAST! MULTIPLE CHOICE! SHOW A LITTLE WORK! PLEASE FAST I HAVE 3 MINUTES

Answers

Answer:

I think it's C

I need this done in 10 minutes PLEASE HELP!!

Answers

Answer: I believe that is proportional.

Step-by-step explanation:

proportional,it is in an even line

Find the value of f(–2) for the function f(x) = 4x + 10.

Answers

Answer: The answer is 2

Step-by-step explanation:

4(-2)+10=2

Answer is 2 step by step 4(-2)+10=2

The four corners are cut from a 3-foot-by-6-foot sheet of plywood, as shown in the figure. Find the
perimeter of the remaining piece of plywood. In the figure A = 6, B = 3 and C = 1.5. Round your answer
to two decimal places.

Answers

Answer:

yeywheysveywbsgdvevcege

Answers must be in standard form:
(X+8)(x+3)

Answers

The answer would be in simple form x^2+11x*24
Can I please have brain list

Chad bought a shirt for $19 and a pair of shoes for $28 more than the shirt. If chad had $13 left over how much money did chad have before buying the shirt and shoes

Answers

He had 79 dollars because if the shoes were 28 dollars more than shirt then you would add 28 plus the 19 to get 47. Now you need to add the shirt so you add 19 to 47 which is 66. Last we need to know how much money he had so we add the 13 dollars to the 66 dollars to get your anwser $79

Chad has $70 before buying the Shirt and shoes using the equation formation

How do we form equations?

Ax+By=C is the usual form for two-variable linear equations. A standard form linear equation is, for instance, 2x+3y=5. When an equation is given in this format, finding both intercepts is rather simple (x and y).

In the given question:

We have,

Cost of a shirt = $19

Let the cost of pair of shoes be $x.

According to the question:

A pair of shoes for $28 more than the shirt.

Forming the equation, we get:

x = $(28+19)

x = $ 47

So, The cost of a pair of shoes is $ 47.

Now, It is given that chad had $13 left over.

So, The total money that she had before buying the shirt and a pair of shoes will be:

{ Sum of the Price of the shirt and a pair of shoes} + $13

that is,

$47 + $19 + $13 = $70.

Hence, Money chad before buying the shirt and shoes is $70.

To learn more about forming equations, visit:

https://brainly.com/question/18793992

#SPJ1

Pleaseeee helpppp!!!!

Answers

Answer:

C

Step-by-step explanation:

I have the same question and computer lol

the ratio of the number of womens shoes to the number of mens shoes in a shoe store is 12:7. What fraction of the shoes are mens shoes.

Answers

7/19 are the fraction of men's shoes

explanation + example:

Use the total number as the denominator: 6 + 8 = 14

Use each of the ratio terms as the numerator in a fraction:

6 becomes 6/14

8 becomes 8/14

Reduce each fraction to lowest terms:

6/14 simplifies to 3/7

8/14 simplifies to 4/7

The part-to-part ratio 6 : 8 converts into the fractions:

6/14 = 3/7

8/14 = 4/7

What is the image point of (-4,-3)(−4,−3) after a translation left 1 unit and down 2 units?

Answers

9514 1404 393

Answer:

  (-5, -5)

Step-by-step explanation:

After adding (-1, -2) to the coordinates, the image point is ...

  (-4, -3) +(-1, -2) = (-5, -5)

Evaluate f(-2) for the function f(x)= -1/2x^2 + x + 1

Answers

Answer:

f(-2) = -3

Step-by-step explanation:

[tex]f(x)=-\frac{1}{2} x^{2} +x+1[/tex]

Just plug in x = -2

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

[tex]f(-2)=-\frac{1}{2} (4) -1[/tex]

4 can be rewritten as [tex]\frac{4}{1}[/tex] or [tex]\frac{8}{2}[/tex] so it has a common denominator.

[tex]f(-2)=-\frac{1}{2} * \frac{8}{2} -1[/tex]

[tex]f(-2)=-\frac{4}{2} -1[/tex]

[tex]f(-2)=-2-1[/tex]

[tex]f(-2)=-3[/tex]

The first two steps in the derivation of the quadratic formula by completing the square are shown below. Which answer choice shows the correct next step?

Answers

You didn’t provide any answer choices but you can use my notes to guide you. Hope this helps! :)

Answer:

c on edge

Step-by-step explanation:

trust me bro

I’m thinking -15+1/8x. Let me know if I’m wrong.

Answers

Answer:

Your incorrect

Step-by-step explanation:

we need help . we think we got it but were not sure ​

Answers

Answer:

your right

Step-by-step explanation:

13.5/3= 4.5 4.5x10= 450 The original price is 450 dollars
4.5=10%
315= 70%
You paid 315 dollars

Devansh buys a house for $189,900. The tax rate is 7.5%. How much was the tax on the home?

Answers

The tax should be $14242.5

Answer:

Answer should be $4242.5

Step-by-step explanation:

Im doing the same thing

0.47 as a percent 6th grade​

Answers

Answer:

47%

Step-by-step explanation:

Answer:

0.47 = 47%

Hope this helps!

If one (1) tablespoon equals three (3) teaspoons, how many tablespoons are in 13 teaspoons?

a.2 2/3 tablespoons
b.4 1/2 tablespoons
c.3 1/3 tablespoons
d.4 1/3 tablespoons

Answers

D. 4 1/3 tablespoons

Explain how the Distributive Property can be used to solve the equation. 3(x+4)=36

Answers

3x + 12 = 36
3x = 24
x = 8

A robot can complete 8 tasks in
3 and a fourth hour. Each task takes the same amount of time.

Answers

Answer:

5/6 hour = 5/6 × 60 = 300/6 = 50 minutes

8 tasks in 50 minutes

1 task = 50/8 = 6 1/4 minutes

a. robot completes task in 6 1/4 minutes

b. #tasks per hour =

#of tasks × time takes to do task < or = 60

n × 6.25 = 60

6.25n = 60.

n= 60/6.25 = 9.6

robot can complete 9 tasks in one hour

Step-by-step explanation:

What is the variable b equal to?

Answers

Answer:

x=-b-[tex]\frac{\sqrt{bx^{2} +100a}}{2a}[/tex]

x=-b+[tex]\frac{\sqrt{bx^{2} +100a}}{2a}[/tex]

Step-by-step explanation:

A division problem is shown below.

4 and one-third divided by 5 and StartFraction 1 over 6 EndFraction
100 points plz help
The reciprocal of a fraction must be found to solve the problem. What is the reciprocal fraction that is required?
StartFraction 6 over 31 EndFraction
StartFraction 3 over 13 EndFraction
StartFraction 13 over 3 EndFraction
StartFraction 31 over 6 EndFraction

Answers

Answer:

31 over 6

Step-by-step explanation:

when you divide fractions you flip the second fractions numbers and then multiply the 2 fractions

HURRY WILL GIVE BRAINLIEST

Given: ABCD is a parallelogram.
Prove: AB CD and BC DA
Angles Segments Triangles Statements Reasons

Please make the answer clear

Answers

Drawing the diagonal [tex]\overline {AC}[/tex] of the parallelogram makes the proof of the

congruency of opposite sides of a parallelogram clearer.

[tex]\overline {AB}[/tex] ≅ [tex]\overline {CD}[/tex] and [tex]\overline {BC}[/tex] ≅ [tex]\overline {DA}[/tex] by ASA rule of congruency

Reasons:

The two column proof is presented as follows;

Statement [tex]{}[/tex]                                 Reasons

ABCD is a parallelogram  [tex]{}[/tex]        Given

∠BAC ≅ ∠DCA  [tex]{}[/tex]                        Alternate interior angles theorem

∠BCA ≅ ∠DAC  [tex]{}[/tex]                        Alternate interior angles theorem

[tex]\overline {AC}[/tex] ≅ [tex]\overline {AC}[/tex]   [tex]{}[/tex]                                 Reflexive property

ΔABC ≅ ΔACD    [tex]{}[/tex]                       ASA rule of congruency

[tex]\overline {AB}[/tex] ≅ [tex]\overline {CD}[/tex]   [tex]{}[/tex]                                 CPCTC

[tex]\overline {BC}[/tex] ≅ [tex]\overline {DA}[/tex]   [tex]{}[/tex]                                 CPCTC

Therefore, segment [tex]\overline {AB}[/tex] and segment [tex]\overline {CB}[/tex]  in ΔABC are congruent to

segment [tex]\overline {CD}[/tex] and segment [tex]\overline {DA}[/tex] in ΔACD by Angle-Side-Angle, ASA, rule of

congruency.

CPCTC stands for Congruent Part of Congruent Triangle are Congruent

Learn more here:

what is the greatest common factor of 6 and 8​

Answers

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

The area of a pool floor is 476.625 square feet. The length of the pool floor is 15.5 feet. What is the width of the pool floor? I am giving 15 points for this or 10 thanks for the help I will also heart your work!

Answers

Answer:

30.75ft is the width

Step-by-step explanation:

15.5 x Width = 476.625

divide 15.5 by 476.625 which equals 30.75

15.5 x 30.75 = 476.625

What are the values of x and y in the following system of equations?

[tex]x+y=15[/tex]
[tex]y-x=5[/tex]

Answers

Step-by-step explanation:

By elimination method,

x+y=15

-x+y=5

------------

2y=20

i.e y=10

Now,

x+y=15

or, x+10=15

or, x=5

Solve for u: 2(u + 6) - 8 > 3(u - 5)

Answers

Answer:

19

Step-by-step explanation:

First get rid of the brackets:

[tex]2u + 12 - 8 > 3u - 15[/tex]

Then simplify:

[tex]2u + 4 > 3u - 15[/tex]

Get all the u's on one side:

[tex]2u - 3u > - 15 - 4[/tex]

Simplify and find u:

[tex] - u > - 19[/tex]

[tex]u < 19[/tex]

If tanx =√24 and cosx =−2√23, find sinx.

Answers

Answer:

Step-by-step explanation:

sin(x)=cos(x) × tan(x)

=(-2√23)×(√24)

=(-2√23)×(2√6)

=(-4√138)

=(-4(2√(3×23)))

=(-8√69)

Select the correct answer.
What is the solution to -2|x-1| = -4?
x = 3
x= -1 or x = 3
x = 1 or x= 3
No solutions exist.
Submit

Answers

Answer:

x = -1 or x = 3

the answer is B x=-1 or x=3
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