HELP ME SOMEONE PLEASE :(

A=4n

B=4n+-9

C=9n-4n

D=(n-36)4

E=4(n-9

Answer: The average age of the children at the library is 7.1 years.

Step-by-step explanation:

Given,

Out of 20 children, six of the children have an average age of 5 years,

Thus, the sum of the ages of 6 students = 5 × 6 = 30

( Total sum of observations = Their Average × Total numbers of the observations )

Now, remaining students = 20 - 6 = 14,

Since, the remaining children have an average age of 8 years.

Thus, the sum of the ages of 14 students = 14 × 8 = 112,

Total sum of the ages of 20 students = 30 + 112 = 142

=142/20

= 7.1 years

Answer:

The average is 7.1 years!

Step-by-step explanation:

6 children = average of 5 years

14 children = average of 8 years

Answer: = 40 . 24

Step-by-step explanation:

A triangular prism. The rectangular sides are 24 feet by 40 feet, 40 feet by 15 feet, and 40 feet by 15 feet. The triangular sides have a base of 24 feet and height of 9 feet.

2,001 square feet

2,376 square feet

2,592 square feet

4,320 square feet

Answer: b.

Step-by-step explanation: A triangular prism is the one which has 3 rectangular sides and 2 triangular sides. To find the surface area of a triangular prism, we have to find the surface area of 3 rectangular side and 2 triangular sides and add them up

Surface Area (rectangle) = Length · Width

Surface Area (triangle) = (1/2)(Base)(Height)

Rectangular side 1:

Length = 40 ft

Width = 24 ft

Surface Area = 40 · 24

Surface Area = 960ft

Rectangular side 2:

Length = 40 ft

Width = 15 ft

Surface Area = 40 · 15

Surface Area = 600ft

Rectangular side 3:

Length = 40 ft

Width = 15 ft

Surface Area = 40 · 15

Surface Area = 600ft

Triangular side 1:

Base = 24 ft

height = 9 ft

Surface Area = (1/2)(24)(9)

Surface Area = 108ft

Triangular side 2:

Base = 24 ft

height = 9 ft

Surface Area = (1/2)(24)(9)

Surface Area = 108ft

SURFACE AREA OF TRIANGULAR PRISM:

Add all surface areas found above

Surface area = 960 + 600 + 600 + 108 + 108

Surface area = 2376ft

Answer:

900

Step-by-step explanation:

135/7.5= x/50

cross multiply

7.5x=6750

x=900

Answer: 91 ft

V = b x h

V = 13 x 7

V = 91

Answer:

the answer is ((((B))))

hope it helps❤

Answer:

B

Step-by-step explanation:

All the other choices give you rational numbers

Answer:

20%

Step-by-step explanation:

x = k√y

Increase y by 44%. y becomes 1.44y.

x = k√(1.44y)

x = 1.2k√y

x went from k√y to 1.2k√y.

(1.2k√y)/(k√y) = 1.2

x is now 1.2 times greater than it was, so the increase in x is 20%.

Answer: 20%

Answer:

Step-by-step explanation:

12*4*y

=

4(12y)

.......

Answer:

−4x^3+3x^2+5x−3.78

Step-by-step explanation:

:D

Answer:

5.54 in tax

Step-by-step explanation:

63 x .088=5.54

Answer:

A(-3,-4)

B(-1,-2)

C(-4,-1)

Answer:

B - The second data set.

Step-by-step explanation:

The median is the number in the middle.

The first set's median is 16.

The second's is 15.

The third's is 14.

The fourth's is 16.

The answer is the second data set :)

Answer:

B

Step-by-step explanation:

B

Answer:

Hiii I am srry I dont know the answer but have a nice day!!

Step-by-step explanation:

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

Explanation:

The distance from his house to the gas station is 5 miles. We can find this by counting out the number of spaces between the two points (since the chart indicates that 1 unit = 1 mile). Or we can subtract the x coordinates to get 8-3 = 5. This only works because the y coordinates of each point are the same value.

To find the distance from the gas station to the market, we subtract the y coordinates this time. This only works due to the x coordinates being the same. We get a distance of 8-3 = 5 miles.

Overall, the total distance Byron drives is 5+5 = 10 miles.

Answer:

Criteria for my Cup:

I want my cup to be short and wide.

Step-by-step explanation:

a) By the way, a cup can be measured in volume.  There are no tall and skinny cups.  They are not attributes of a cup.  However, a cup can be short (height).  It can also be wide, usually measured in diameter and radius.

b) Data:

Volume          cubic centimeters     milliliters    fluid ounces     cups

cold pack                   150                      150                 5               0.6

drink compartment  600                     600               20               2.5

total                           750                     750               25                3.1

Answer:

A. (x-4)(x-4)

Step-by-step explanation:

Note that (x+a)(x+b)=x²+(a+b)x+ab.

Looking at this with regard to our trinomial, x²-8x+16, in our case we could say that a+b=-8 and ab=16.

Since ab=16, we know a and b are pairs of factors of 16. So a and b are either (1 and 16), (2 and 8), (4 and 4).

We also know that a+b=-8, so which pair of factors above can be added or subtracted from each other to get -8? 4 and 4, or rather, -4 and -4.

So, since (x+a)(x+b)=x²+(a+b)x+ab, and in our case 'a' and 'b' are both -4, we can say that x²-8x+16=(x-4)(x-4).

Answer:

reflection reflection

Step-by-step explanation:

rotation doesn't make sense and there is no indication of a center of rotation.

so the obvious answer is reflection reflection

Answer:

x = 38

Step-by-step explanation:

since angle AED is a right angle 2x + 14 = 90

subtract 14 from 90 you get 76, divide that by 2 you get 38

Answer:

Sum

Step-by-step explanation:

It needs 2 be 20 characters so dont mind me . . .

wait hol up i took the test again sorry um it quotient

Answer:

[tex]=3b+3[/tex]

Step-by-step explanation:

[tex]\mathrm{Remove\:parentheses}:\quad \left(a\right)=a[/tex], [tex]=7b-2-4b+5[/tex].

[tex]\mathrm{Group\:like\:terms}[/tex]:

[tex]=7b-4b-2+5[/tex]

[tex]\mathrm{Add\:similar\:elements:}\:7b-4b=3b[/tex]

[tex]=3b-2+5[/tex]

[tex]\mathrm{Add/Subtract\:the\:numbers:}\:-2+5=3[/tex]

[tex]=3b+3[/tex]

Answer:

2 hour and 35 minutes

Step-by-step explanation:

45 +20 = hour and 5 minutes

65+90=155 or 2 hour and 35 minutes

Answer:

[tex]x = 19[/tex]

[tex]y = 22.5[/tex]

Step-by-step explanation:

[tex]5y + 3y = 180[/tex]

[tex]8y = 180[/tex]

[tex]y = 22.5[/tex]

[tex]6x + 13 + 4x - 3 = 180[/tex]

[tex]10x - 10 = 180[/tex]

[tex]10x = 190[/tex]

[tex]x = 19[/tex]

Answer: x=17

y=22.5

Step-by-step explanation: trial and error of math nation <333

Answer:

First answer is correct and the answer for the second question is a = 30

Answer:

50% or 1/2

Step-by-step explanation:

There is an even amount of even and odd numbers on a number cube, therefor it is split half and half, giving you 50%.

50% or 1/2

(i may be wrong but i had this for a hw problem)

Answer:

The equation of a right triangle is given by a2 + b2 = c2, where either a or b is the height and base of the triangle and c is the hypotenuse. Using the Pythagorean Theorem, finding the missing side of a triangle is pretty simple and easy. The two special right triangles include: 45°; 45°; 90° Triangle.

a correct answer that guy  ☝ is rude can i get brainliest for answering

Answer:

x=10

Step-by-step explanation:

Both of the tangents will be equal.

6x+17=16x-8

or, 10x=25

So, x=2.5

Rounding to the nearest tenth is 10.

Answer:

18

Step-by-step explanation:

1 ft=12in

3ft=36in

divide 36 by 2 and you get 18