Sixty percent of a class is girls. If here are 18 girls in a class, then how many total students are there?

Answer:

50 kg sacks of rice for $59.00.

Step-by-step explanation:

Lets do the math. First, I want to see how much 50 kg of of the first option costs.

$15.45 is worth 10kg.

$15.45*3=$46.35

Since the fourth on is free, the sum will stay the same.

$46.35+$15.45=$61.80.

50 kg of the first option is worth $61.80.

50 kg of the second option is worth $59.00.

$61.80 > $59.00.

So, the second option is cheaper and the better deal.

Step-by-step explanation:

Confidence interval = 90% = 0.90.

1 - 0.90 = 0.10

Mean of 15 batch:

724+718+776+760+745+759+795+756+742+740+761+749+739+747+742 = 11253/15

= 750.2

Mean of second batch:

735+775+729+755+783+760+738+780

= 6055/8

= 756.875

Sd = 20

Z-alpha/2 = 1.64

= (750.2-756.875)-1.64*√20²/15 + 20²/8

= -21.0348

(750.2-756.875)+1.64*√20²/15 + 20²/8

= 7.68

2. The upper limit of the interval is less than 10 so in conclusion the difference in mean batch viscosity is about 10 or less than 10

Answer:

Step-by-step explanation:

The sum of the measures of the angles in a triangle is 180°. The equation relating angles 1, 2, 3 will reflect this fact.

  m∠1 +m∠2 +m∠3 = 180°

__

Of course, angle 3 is supplementary to angle 4, so we have ...

  m∠3 +m∠4 = 180°

Substituting this expression for 180° in the first equation, we have ...

  m∠1 +m∠2 +m∠3 = m∠3 +m∠4

Subtracting ∠3 from both sides, we are left with an equation relating angles 1, 2 and 4.

  m∠1 +m∠2 = m∠4

__

The "rule" expressing this last relationship is, "an exterior angle is equal to the sum of the remote interior angles." Knowing this relation can make a number of problems easier to solve.

Answer:  x= 21 =0.500

​

x= 8−2− −12 = 4−1−i 3

​ =−0.2500−0.4330i

x= 8−2+ −12 = 4−1+i 3

​ =−0.2500+0.4330ix= 21 =0.500

​

Step-by-step explanation:I hope this helped, if not HMU and I will get you a better answer

-Have a great day! :)

Answer:

Constant of Proportionality = 2

The second one is 2

The third one is 6

And the fourth one is 2.5

Answer:

x=3

Step-by-step explanation:

2x+5=11

first subtract 5 from 11

2x=6

then divide 6 by 2

x=3

Hello.

Subtract 5 from both sides of the equation.

2x + 5 (-5) = 11 (-5)

Simplify

2x = 6

Divide both sides of the equation by 2.

2x (/2) = 6 (/2)

x = 3

The unknown number in the equation is 3.

Answer:

When solving a multi step equation, you use PEMDAS (parentheses, exponents, multiplication, division, add, subtract), and you also use PEMDAS when solving a multi step inequality. However, inequalities are tricky in the fact that if you multiply or divide by a negative number, you must flip the sign. And while normally there are 1 or 2 solutions to a multi step equation, in the form of x= #, you'll have the same thing, but with an inequality sign (or signs).

A two-step equation is an algebraic equation that takes you two steps to solve. You've solved the equation when you get the variable by itself, with no numbers in front of it, on one side of the equal sign.

hope it helped

Answer:

Step-by-step explanation:

7+3=10x2=20

100-4= 96

96 divided by 20= 4.8

Answer:

Turn the answer to

-y = -3x - 5

-3 is the slope, and -5 is the y - intercept. Now graph it and look for the x intercept

Step-by-step explanation:

Answer:

3 1/6

Step-by-step explanation:

Answer:

3 1/6

Step-by-step explanation:

Answer:

28/21 = 3x - 7/x+11

x = 13

Step-by-step explanation:

The value of x from the given diagram is 13. Option A is correct.

From the given similar triangles;

Cross multiply

28(21) = (3x-11)(x+11)

(3x-11)(x+11) = 588

Expand

3x^2 + 33x - 11x - 121 = 588

3x^2+22x- 709 =0

On factorizing, the value of x is 13

Learn more on similar triangles here: https://brainly.com/question/2644832

Answer:

3:4

Step-by-step explanation:

The answer is you can fit 18 books on the bookshelf. :)

You can fit 18 books perfectly.

We have a bookshelf of given dimensions.

We have to determine how many books can fit in this shelf.

There are 12 inches in 1 feet.

According to the question, we have -

Length of bookshelf = [tex]$3\frac{1}{2}[/tex] feet  = [tex]$\frac{7}{2}[/tex] feet = [tex]$\frac{7}{2} \times 12[/tex] inches = 42 inches.

Width of each book - [tex]$2\frac{1}{4}[/tex] inches = [tex]$\frac{9}{4}[/tex] inches.

Assume that the total number of books that can fit in a bookshelf is x. Therefore -

x = [tex]$\frac{42}{\frac{9}{4} } =42\times \frac{4}{9}[/tex]

x = 18.66 = 18 books (Approx.)

Hence, you can fit 18 books perfectly.

To solve more questions on quantity estimation, visit the link below-

https://brainly.com/question/21854275

#SPJ2

Answer:

Step-by-step explanation:

Any number greater than 1 will give a number greater than 2386

Answer:

Symmetric

Step-by-step explanation:

In the stem and leaf plot above which represents the current sale prices of houses in dollars, we can observe the shape of the distribution seem like that of a bell shape. Most of the data values are concentrated towards the center compared to the concentration at both extremes.

This implies that most of the current sales price is centered close to the median price of roughly 49/50 dollars.

Therefore, the distribution of housing price can be described as roughly symmetric.

Answer:

-4

Step-by-step explanation:

Parallel lines have the same slope so we know that m = -4.

Answer: -4

Step-by-step explanation:

Parallel lines will always have the same lengths. If one side has -4 as a length, the other will also have -4 as it's length.

Hope this helps you!

Answer:

Step-by-step explanation:

BAR CHART

Hope this helps

plz mark as brainliest!!!!!!!

Answer:

B

Step-by-step explanation:

Answer:

b 7 gallons

8 pints times 7 gallons is 56 pints

Answer:

1 B

2 A

3 B

Step-by-step explanation:

1

The population is the total sample from which part of the event is considered. It's like in a set, the population would encompass everything as a whole. From the statement given, we're expected to find the population. The population is B.

All NBA players since 1966. This is because it is from this pool that the draft picks were selected, and narrowed down to 45% which were centre backs.

2

The specified attribute is A.

Being a No. 1 draft pick, because that's the fulcrum of the statement in itself

3

B sample proportion. The population like I stated above, is all NBA players since 1966, thus, a population proportion would have had the statement like this.

45% of all NBA players since 1966...

So, therefore, it's a sample proportion since it is referring to the draft pick, and not the NBA players

Answer:

Answer:

1 B

2 A

3 B

Step-by-step explanation:

Answer:

3f

Step-by-step explanation:

you multiply 3 by f to get the number of years Roberto played bass

Answer:

[tex]R=3(F)[/tex]

Step-by-step explanation:

[tex]R[/tex] = Roberto's years

[tex]F[/tex] = Felix's years

Answer:

b

Step-by-step explanation:

Answer:

The answer is below

Step-by-step explanation:

Let S denote syntax errors and L denote logic errors.

Given that P(S) = 36% = 0.36, P(L) = 47% = 0.47, P(S ∪ L) = 56% = 0.56

a) The probability a program contains both error types = P(S ∩ L)

The probability that the programs contains only syntax error = P(S ∩ L') = P(S ∪ L)  - P(L) = 56% - 47% = 9%

The probability that the programs contains only logic error = P(S' ∩ L) = P(S ∪ L)  - P(S) = 56% - 36% = 20%

P(S ∩ L) = P(S ∪ L) - [P(S ∩ L') + P(S' ∩ L)] =56% - (9% + 20%) = 56% - 29% = 27%

b) Probability a program contains neither error type= P(S ∪ L)' = 1 - P(S ∪ L) = 1 - 0.56 = 0.44

c)  The probability a program has logic errors, but not syntax errors =   P(S' ∩ L) = P(S ∪ L)  - P(S) = 56% - 36% = 20%

d) The probability a program either has no syntax errors or has no logic errors = P(S ∪ L)' = 1 - P(S ∪ L) = 1 - 0.56 = 0.44

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Programs with syntax errors ; n(S) = 36%

Programs with logic errors; n(L) = 47%

Programs with atleast one of the two errors = 56%

P(S) = 0.36 ; p(L) = 0.47

P(SnL) = x

P(S) only + p(L) only + p(SnL) = 0.56

P(S) only = 0.36 - x

P(L) only = 0.47 - x

P(SnL) = 0.36 - x + 0.47 - x + x = 0.56

0.83 - x = 0.56

x = 0.27

B) probability that program contains neither error :

1 - p(program contains atleast one of the two errors)

1 - 0.56 = 0.44

C) probability of logic error but no syntax error :

P(L) - p(SnL)

= 0.47 - 0.27

= 0.20

Answer:

Yes it is

Step-by-step explanation:

Pi is measured to be around 3.14 and 4.6 is of course bigger than 3.14 so yes it is

answer:

yes

explanation:

pi is 3.14 (and those numbers going on forever) even though pi looks big, the numbers are behind the decimal which is very small.

sorry I'm bad at explaining but I just went over this in class

4 is bigger than 3 so automatically 4.6 is bigger than pi

Answer:

First notice that θ is in quadrant I, where the sine and tangent will also be positive.

Then draw the angle in quadrant I. Drop a perpendicular to the x axis.

Since cosθ= 7/25, label the horizontal leg 7, and the hypotenuse 25; the vertical leg will be 24 by Pythagorean theorem.

Then sinθ=vertical/hypotenuse=  24/25 and tanθ= vertical/horizontal=  24/7

Step-by-step explanation: I hope this helps!

Answer:

First notice that θ is in quadrant I, where the sine and tangent will also be positive.

Then draw the angle in quadrant I. Drop a perpendicular to the x axis.

Since cosθ= 7/25, label the horizontal leg 7, and the hypotenuse 25; the vertical leg will be 24 by Pythagorean theorem.

Then sinθ=vertical/hypotenuse=  24/25 and tanθ= vertical/horizontal=  24/7

Step-by-step explanation:

Answer:

7.8y - 26.2

Step-by-step explanation:

Answer:

y=-0.15

Step-by-step explanation:

Subtract the 6.4y on the left by the 14.2y, you will get 7.8y. The reason why you subtract instead of add is because you always do the opposite when adding/subtracting from the other side of the equal sign. Next, add the 12.5 to the -13.7 so you get -1.2. The whole equation would be 7.8y=-1.2. Then divide by 7.8 on both sides so that you get y=-0.15. Hope this helps :)

Answer: switch sides and theres your answer

Step-by-step explanation:

good luck