There are 14 boys and 9 girls in miss Keller's music class. what is the ratio of boys to girls

Answer:

Closed circle

Step-by-step explanation:

When it's ≤ or ≥ it's a closed circle, when it's < or > it's an open circle.

Answer:

may be 5 I'm not a 100%sure

Answer:

Option B

Step-by-step explanation:

In this question , we just need to make "F" as the subject of the equation.

So, lets solve the equation.

[tex]R = \frac{F}{N + F}[/tex]

→ Multiplying (N + F) on both the sides ,

[tex]=> R \times (N + F) = \frac{F}{(N + F)} \times (N + F)[/tex]

[tex]=> RN + RF = F[/tex]

→ Substracting both the sides with RF ,

[tex]=> RN + RF - RF = F - RF[/tex]

[tex]=> RN = F - RF[/tex]

→ Taking F common from R.H.S ,

[tex]=> RN = F(1 - R)[/tex]

→ Dividing both the sides by (1 - R) ,

[tex]=> \frac{RN}{1 - R} = \frac{F(1 - R)}{(1 - R)}[/tex]

[tex]=> \frac{RN}{1 - R} = F[/tex]

∴ Hence , [tex]F = \frac{RN}{1 - R}[/tex]

Answer:       43 is the answer.

Step-by-step explanation:

43 because 45 + 43 is the only number that could equal 88 and the total that tom earned.

Answer:

(see below)

Step-by-step explanation:

First, assess your info:

- total of $88

- $45 for dog walking

- $b for babysitting

Now, use that info to write an equation to combine all of this info:

$45 + $b = $88

If you were to find b, however, you'll need to simplify:

$45 + $b = $88

$b = $88 - $45

b = $43

Answer:

Step-by-step explanation:

A question on a math quiz asks, "What is 175% of 72?" Petra calculates 12.6 as the answer. Is this a reasonable answer? Explain

Answer:

-1

Step-by-step explanation:

To solve this word problem, we need to convert it into an equation. Let's first dissect the problem:

"The sum of six times a number and 1" -- since "sum" means addition, and "6 times" means 6 multiplied by some number, we can write this as: 6x + 1, where x stands for the unknown number

"is equal to five times the number" -- since "equals" means "=" and five times the number means 5x, where x stands for that same unknown number, we can write as: = 5x

Put it all together and we have

6x + 1 = 5x

Now we can solve our equation.

First, we need to get all of the like terms on each side of the equal sign. To do this, we will first subtract 1 from both sides:

6x + 1 - 1 = 5x - 1, which gives us 6x = 5x - 1

Next, we will subtract 5x from both sides:

6x - 5x = 5x - 5x - 1, giving us x = -1

-1 is the number

hope this helps

Answer:

x=-1

Step-by-step explanation:

6 x + 1 = 5 x

6 x - 5 x + 1 = 5 x - 5x

x +1 =0

x+1-1=-1

x=-1

Answer:

300

Step-by-step explanation:

2 : 3

120/2=60

1 part = 60

(60 x 2) + (60 x 3) = 300 total

There is a total of 300 beans in the jar mung.

Suppose that we've got two quantities with measurements as 'a' and 'b'

Then, their ratio(ratio of a to b) a:b Remember that the ratio should always be taken of quantities with the same unit of measurement. Also, the ratio is a unitless(no units) quantity.

We have been given a jar of mung beans and lima beans in a ratio of 2 : 3, and 120 of the beans are mung beans.

So, 2 : 3

1 part, 120/2 = 60

The total beans in the jar,

(60 x 2) + (60 x 3) = 300

Hence, there is total of 300 beans in the jar.

Learn more about ratios here:

brainly.com/question/186659

#SPJ2

Answer:

E. Assuming that the mean amount of grass eaten by cows is equal to the mean amount of grass eaten by horses, the probability of observing a test statistic of at least 1.664 is 0.0487

Step-by-step explanation:

Given that :

Test statistic, t = 1.064

P-value = 0.0487

Hypothesis : To test if grazing cows eat more grass than grazing horses

The null hypothesis will be :

H0 : μ1=μ2 (that is there is no difference on the mean number of grass eaten by cows and horses).

Alternative hypothesis ; H1 : μ1 > μ2

The null is assumed true unless tested otherwise, the P-value is used as a probability metric for the rejection or acceptance of the null.

Therefore, if the null is True in this scenario, then, the probability of observing a test statistic of at least 1.664 is 0.0487

If the null is true in this scenario, then the probability of observing a test statistic of at least 1.664 is 0.0487.

In null hypotheses, there is no relationship between the two phenomenons under the assumption or it is not associated with the group. And in alternative hypotheses, there is a relationship between the two chosen unknowns.

Test statistics, t = 1.064

P-value = 0.0487

The null hypothesis will be

H₀: μ₁ = μ₂ (There is no difference in the mean number of grass eaten by cows and horses)

An alternative hypothesis will be

Hₐ: μ₁ > μ₂

The null is assumed true unless tested otherwise, the P-value is used as a probability metric for the rejection or acceptance of the null.

Therefore, if the null is true in this scenario, then the probability of observing a test statistic of at least 1.664 is 0.0487.

More about the null hypotheses and alternative hypotheses link is given below.

https://brainly.com/question/9504281

Answer:

Postive intiger factors: 1, 2, 3, 4, 6, 8, 12, 16, 24 and 48.

Answer:

1,2,3,4,6,8,12,16,24,48

Step-by-step explanation:

Answer: The first three

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Since if it's 5 or higher you go up but if it's 4 or lower you stay the same. And since 2.36 doesn't have the .5 it would round to 2

Answer:

2

Step-by-step explanation:

The rounding rule is 5 or higher round up and below 5 round down. So we're rounding to the nearest whole numbers so we have to look at the tenths place. Since the tenths place number is below 5 we round down to 2.

Answer: D:(-1,4)

R:(-4,4)

Step-by-step explanation:

I hope that correct

Answer:

116.113cm2 is the purple reigon area

Step-by-step explanation:

using pi r squared

1st circle area: 16.619

2nd circle area: 132.7322

1st - 2nd = 116.113 cm2

The probability of an incorrect conclusion is,

In 84 % of inspection,  [tex]7.56\%[/tex]  of them labeled as not defective but they are actually defective

It is given that,

A quality assurance check is 91% accurate for non-defective devices and 97% accurate for defective devices.

Of the devices checked, 84% are not defective.

Actual not defective is,

            [tex]\frac{91*84}{100} = 76.44\%[/tex]

In  [tex]84\%[/tex] of inspection,[tex]76.44\%[/tex] are actually not defective

But [tex]84- 76.44 = 7.56\%[/tex]  of them labeled as not defective but they are actually defective

Learn more about Probability here:

https://brainly.com/question/24756209

Answer:

8.54 meters

Step-by-step explanation:

0.61x14=8.54

Answer:  [tex](-\infty, 7)[/tex]

You can write this as (-infinity, 7) if you aren't able to use the infinity symbol.

====================================================

Explanation:

Think of x < 7 as writing [tex]-\infty < x < 7[/tex]

So x is between negative infinity and 7, excluding both endpoints.

To write [tex]-\infty < x < 7[/tex] in interval notation, we write [tex](-\infty, 7)[/tex]

The curved parenthesis tell us to exclude the endpoint.

Answer:

The number of faces in 4 faced dice is 4 and in 6 faced dice is 6

therefore, Total possibilities for getting anything is 1/10

Answer:

first you choose one of the varibles to solve for so im going to start with s you would add them up and subtract them that way there on the other side of the = sighs so you equation would be 8+2d+3=-7s then you add the 8 and the 3 and you would get 11+2d=-7s i dont know what you do after this i think this is the answer.

Answer:

the other guy is right trust him

Answer: The area is 5x + 20

Step-by-step explanation:

Add all the numbers up.

7 + 4x - 8 = 3

13 + (x + 8) = (x + 21)

Therefore, your answer is 5x + 20

Let me know if you have any questions!

Answer:

Unlike terms.

Step-by-step explanation:

[2y2 does not equal -4y2], much like 5 does not equal 6, vice versa.

Answer: rectangle

Step-by-step explanation: Because I saw another Brainly answer saying it was rectangle

Answer:

1

Step-by-step explanation:

The probability of an event occurring is the ratio of the possible outcome to the total outcome. In this case, 15 friends were chosen and the choices are either  strawberry or vanilla.

Since there are no other flavors, a friend picked at random will either pick strawberry or vanilla.

Therefore probability that this friend's favorite flavor is either strawberry or vanilla is 1.

Answer:

a) A  (-2,-2)  →A¹ (  2, 2)

   B (-5,-2)  →B¹ (5 , 2)

   C (-3,-4) →C¹ ( 3 ,4))

b)

A (-2,-2)  → A¹(  -2, 2)

B (-5,-2)  →B¹ (-5 , 2)

C (-3,-4) →C¹ ( -3 ,4))

c)

A (-2,-2)  → A¹(  -2, 2)

B (-5,-2)  →B¹ (-2 , 5)

C (-3,-4) →C¹ ( -4 ,3))

Step-by-step explanation:

a) Given the (-2,-2) is rotation 180° of counter clock wise then the transformed

to A (-2,-2)  → A¹(  2, 2)

   B (-5,-2)  →B¹ (5 , 2)

   C (-3,-4) →C¹ ( 3 ,4))

b)

Reflection about the x-axis

( x, y) → (  x, -y)

A (-2,-2)  → A¹(  -2, 2)

B (-5,-2)  →B¹ (-5 , 2)

C (-3,-4) →C¹ ( -3 ,4))

c)

( x, y) → (  y, -x)

Given (x, y) is rotation 90° of  clock wise about the origin then the transformed to

A (-2,-2)  → A¹(  -2, 2)

B (-5,-2)  →B¹ (-2 , 5)

C (-3,-4) →C¹ ( -4 ,3))

Answer:

8.99

Step-by-step explanation:

Step One: Subtract 57.97 and 32.99

Step two: Divide your answer (17.98) by two

Step Three: Submit your answer (8.99)

Answer:

-3+6x

x+3

Step-by-step explanation:

Answer:

23x^3+9x^2-5x+1/x^2

Step-by-step explanation:

I hope you don't mind me putting my explanation as a screenshot of this lol

Answer:

99 / 324,870 or 3%

Step-by-step explanation:

there are 12 face cards out of a total of 52 cards

probability of 5 face cards = [tex]\frac{12}{52}[/tex] · [tex]\frac{11}{51}[/tex] · [tex]\frac{10}{50}[/tex] · [tex]\frac{9}{49}[/tex] · [tex]\frac{8}{48}[/tex]

The probability that all cards are face cards at the time when 5 cards are drawn at random from a standard deck should be [tex]99 / 324,870[/tex]

Since 5 cards are drawn at random from a standard deck

Also, we know that

there are 12 face cards out of a total of 52 cards

So here the probability be like

[tex]= 12/52 \times 11/51 \times 10/50 \times 9/49 \times 8/48[/tex]

= [tex]99 / 324,870[/tex]

Hence, The probability that all cards are face cards at the time when 5 cards are drawn at random from a standard deck should be [tex]99 / 324,870[/tex]

Learn more about probability here: https://brainly.com/question/21102470

Answer:

If x=3 and y=2, 4xy = 4(3)(2) = 12(2) = 24

Step-by-step explanation:

Answer:

★ Value of 4xy when x=3, y=2

★ 4xy = 4×3×2 = 24