solve pls brainliest

Answer:

nooo.......how there can only be 20 students.....!

The answer is no!

There can't be 20 students in that class because the ratio is 4:9 so its either 4 boys and 9 girls or 4 girls and 9 boys.This is a total of 13 students because (4+9=13).The answer is That there can not be 20 students in that class because there is only 13 students.

Answer:

2 real solution

Step-by-step explanation:

3xghrur

Answer:

The answer will be, 105.26

Answer: {-3, 7, 18}

Step-by-step explanation:

B ∪ C = {-3, -1, 5, 7, 9, 18}

A ∩ (B∪C) = {-3, 7, 18}

please give me a brainliest answer

Answer:

Step-by-step explanation:

First we look at PEMDAS.

In A∩(B∪C), parentheses come first.

So, we do B∪C.

The ∪ symbolizes union, which means you have to combine the elements of the two sets.

If B={−1,5,7,18}, and C={−3,5,9}, then both of them together is {-3,−1,5,7,9,18}. I used underlining and italics to show where the numbers came from. There is a 5 in both sets, but you only have to put it once.

B∪C={-3,−1,5,7,9,18}.

Now that we have B∪C, we can solve for A∩(B∪C).

∩ means intersection, so you find the elements in both sets. Basically, just look for numbers that appear in both A and B∪C.

B∪C={-3,−1,5,7,9,18}

A={0,12,-3,7,18}

Therefore, A∩(B∪C)={-3, 7, 18}

Hope this helped! <3

Answer:

16 ==>> Length of PR

4 ==>> Value of A

3 ==>> Value of B

6 ==>> Length of QS

Step-by-step explanation:

==>> Since PQRS is a parallelogram the diagonals are symmetrically split by a shared midpoint: T

--

==>> Thus the values of A & B can be found by setting the sides to equal each other.

2B - 3 = B [add 3 and subtract B from both sides]

B = 3

A + 4 = 2A [subtract A from both sides]

4 = A

--

==>> Then to find the length of the diagonals: Plug the variables in and add both sides.

2(3) - 3   +   (3) =6

(4) + 4     +   2(4)  =16      

The correct matching of the elements to their values are:

This refers to the plane that has four sides and their opposite sides are parallel.

Hence, because PQRS is a parallelogram, the diagonals are symmetrically split by a shared midpoint:

This means that the values of A & B can be found by setting the sides to equal each other.

2B - 3 = B

B = 3

A + 4 = 2A

4 = A

Length of the diagonals:

2(3) - 3   +   (3) =6

(4) + 4     +   2(4)  =16      

Read more about parallelograms here:

https://brainly.com/question/3050890

#SPJ2

Answer:

2 3/4 or 11/4

Step-by-step explanation:

2.75 = 11/4 = 2 3/4 as a fraction

To convert the decimal 2.75 to a fraction, just follow these steps:

Step 1: Write down the number as a fraction of one:

2.75 = 2.75 / 1

Step 2: Multiply both top and bottom by 10 for every number after the decimal point:

As we have 2 numbers after the decimal point, we multiply both numerator and denominator by 100. So,

2.75 / 1 = (2.75 x 100)/(1 x 100) = 275/100.

Step 3: Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(275,100) = 25. So,

(275 ÷ 25)/ (100 ÷ 25) = 11/4 when reduced to the simplest form.

As the numerator is greater than the denominator, we have an IMPROPER fraction, so we can also express it as a MIXED NUMBER, thus 275 /100

is also equal to  2 3/4 when expressed as a mixed number.

How to Convert a Decimal to a Fraction - Steps

Step 1: Write down the decimal as a fraction of one (decimal/1);

Step 2: If the decimal is not a whole number, multiply both top and bottom by 10 until you get an interger at the numerator.

Step 3: Simplify (or reduce) the fraction if it is not in the simplest form.

Answer:

6 brown socks are in a package of 10 pairs of socks

Answer:

=-16

Step-by-step explanation:

Answer:

the answer to that I think is a or c. either one of those.

Answer: 5 pints

Step-by-step explanation:

divide the volume value by 16

so 80 divided by 16.

Answer:

2nd option -7 - 13i

Step-by-step explanation:

took review

Answer:

a. In cm3 - 3 Cubic Meters

b. in dm3 - 3,000 Cubic Decimeters

c. In gallons = 792.51615707445 gallons

d. In liters (extra) - 3000.00000000001819

Step-by-step explanation:

RP = l x w x h

V = 3,000,000

Rectangular solid is a rectangular prism - To find the volume of a rectangular prism, multiply its 3 dimensions: length x width x height. The volume is expressed in cubic units.

Answer:

your answer is as follows

Step-by-step explanation:

the first option fits.. I.e., y=x^2-12

Answer:

x = 1/6

hopefully

Option A

Answer:

i have no clue sorry try 180 - 135

Step-by-step explanation:

Answer:

21 inches

Step-by-step explanation:

if its 3 inches everyone day, and theres 7 days a week. that would mean it would drop 21 inches

Answer:

Step-by-step explanation:

Let the numbers be x and y.

The equations are:

Add up the equations to eliminate y and solve for x:

Now find the value of y:

Let the numbers be a and b

Adding both

[tex]\\ \sf\longmapsto 3a=15[/tex]

[tex]\\ \sf\longmapsto a=5[/tex]

Putting in eq(1)

[tex]\\ \sf\longmapsto 5-b=2[/tex]

[tex]\\ \sf\longmapsto b=5-2[/tex]

[tex]\\ \sf\longmapsto b=3[/tex]

Answer:

3) 2

4) Water's Edge Rafts

Step-by-step explanation:

3) Rate of change is nothing but the slope

Slope formula : y2 - y1 / x2 - x1

13 - 11 / 2 - 1

2/1

2

Rate of change = 2

4) Rate of change : y2 - y1 / x2 - x1

Water's Edge Rafts

36 - 6 / 6 - 1

30/5

6

Water's Edge Rafts' Rate of change = 6

Ryan's Rafts

17.25 - 15.00 / 2 - 1

2.25/1

2.25

Ryan's Rafts' Rate of change = 2.25

6>2.25

So, Water's Edge Rafts' has the highest rate of change

Answer:

2 for # 3

2.25 for # 4

Step-by-step explanation:

15-11/3-1

=2

(19.50-15)/(3-1)

2.25

Answer:

1/2^2

Step-by-step explanation:

There can't be a negative exponent

Answer:

2^6 would be index form

Step-by-step explanation:

Answer:

Each magazine would cost 5 dollars.

Step-by-step explanation:

If he originally started with $25 then spent $5 he would then have $20 dollars left.

If he then bought 4 magazines using the last of his $20 (ignoring sales tax) you would have to divide $20 by 4 to get a total of $5 dollars for each magazine.

I hope this helps :D

Answer:

c. 1.2 * 10^4

Answer : D. 3,600

sorry if that's wrong

Answer:

x=87, y=261

Step-by-step explanation:

x+y=348 and 3x=y

plug 3x in for y.  

x+(3x)=348

4x=348

x=87

plug x in to solve for y.

3(87)=y

y=261

Answer:

[tex](x+10)^2+(y-5)^2=4[/tex]

Step-by-step explanation:

Hi there!

Equation of a circle: [tex](x-h)^2+(y-k)^2=r^2[/tex] where [tex](h,k)[/tex] is the center of the circle and [tex]r[/tex] is the radius

Plug in the center (-10,5) and the radius 2:

[tex](x-(-10))^2+(y-5)^2=2^2\\(x+10)^2+(y-5)^2=4[/tex]

I hope this helps!

Step-by-step explanation:

all of these 4 numbers are

integer (whole numbers positive and negative).

real (every whole number can be written as e.g. 3.0 and is part of the real numbers).

rational (as any whole number can be written as e.g. 3/1 and is part of the rational numbers).

whole (no fractions).

natural (they are in the set of [1, 2, 3, ... infinity) ).

the only thing here they are not is irrational, as to be irrational they would need to have an infinite sequence of digits after the decimal point without any repeating pattern.

Answer:

The number generator is fair. It picked the approximate percentage of white socks most of the time.

Step-by-step explanation:

Just took the test :3

Description  about the number generator : The number generator is fair. It picked the approximate percentage of white socks most of the time.

Random selection is a part of the sampling technique in which each sample has an equal probability of being chosen.

According to question

White socks = 80%

Black socks = 20%

Randomly selecting 10 socks from the drawer .

Process repeated 10 times

According to dots on plot

Number white socks was selected in each round is   7,7,7,8,8,8,8,9,9,9 .

If we evaluate the number generator :

80% of the socks are white, and each trial selects 10 socks.  80% of 10 is 8, which is what the number generator picked most of the time.  

That means The number generator is fair.

Hence, The number generator is fair. It picked the approximate percentage of white socks most of the time.

To know more about Randomly selecting here :

https://brainly.com/question/26755916

# SPJ2

Answer:

72 dollars ÷ 4

4 hours ÷ 4

=  

18 dollars

1 hour

=  

18 dollars

hour

= 18 dollars per hour

Step-by-step explanation:

Answer:

its 76 becuse 72+4=76

Step-by-step explanation:

72+4=76

Answer:

It is C because 4+8=3(4)

That's =12 =12

Answer:

LCD(4/ 19 , 7/ 10 ) = LCM(19, 10) = 2×5×19 = 190 4/ 19 = 40/ 190 7/ 10 = 133/ 190

Step-by-step explanation:

Answer:

Step-by-step explanation:

133/190

Answer:

450 feet below sea level

Step-by-step explanation:

ascend = move up = add

800 ft below sea level = -800

-800 + 350 = -450