Andrei wants to fill a glass tank with marbles, and then fill the remaining space with water.

Answer:

Hamish and Harry work as plumbers. Harry earns a dollar an hour more than 5/4 the amount hamish earns per hour. harry earns per hour is 2$ less than 7/5 the amount hamish earns per hour. how much do each of them make an hour

Step-by-step explanation:

Let

x is the  amount Harry earns 

y is the amount Hamish earns 

x=(5/4)y+1 ⇒ (x-1)*4/5 = y-------- equation 1

x=(7/5)y-2⇒ (x+2)*5/7 = y-------- equation 2

equals 1 and 2

(x-1)*4/5 = (x+2)*5/7

(4x-4)/5 = (5x+10)/7

(4x-4)*7 = (5x+10)*5

28x-28 = 25x+50

28x-25x = 50+28

3x = 78

x = 26

substitute x = 26 for y=(x-1)*4/5

y = (x-1)*4/5

y =  (26-1)*4/5

y = 20

the answer is

Answer:

Option (3). 1571 in³

Step-by-step explanation:

Amount of cement required to fill the cement = Volume of the cone

Formula for the volume of the cone is

Volume = [tex]\frac{1}{3}\pi r^{2}h[/tex]

Here r = radius of the cone

h = height of the cone

Volume = [tex]\frac{1}{3}\pi (10^{2})(15)[/tex]

             = [tex]\frac{1}{3}\pi (100)(15)[/tex]

             = [tex]\frac{1500\pi }{3}[/tex]

             = 500π

             = 1570.8

             ≈ 1571 in³

Therefore, Option (3) is correct.

Answer:yes

Step-by-step explanation: 20<_x-8 = 20 <_20 which is correct

Answer:

Step-by-step explanation:

25b * (3a² - 1) = 25b * 3a² - 25b * 1

                     = 75ba² - 25b

Distributive law upon subtraction:

a(x - y) = ax - ay

Answer:

[tex]25b(3a*2-1)=25b(6a-1)[/tex]

Step-by-step explanation:

[tex]25b(3a*2-1)[/tex]

Multiply the numbers: [tex]3 * 2 = 6[/tex]

[tex]=25b(6a-1)[/tex]

Hope I helped, may I get brainliest and a thanks?

Thank you, have a good day! =)

Answer: A) Option B

B) 22.3 minutes.

Step-by-step explanation:

The temperature decreases in an exponential decrease, this means that we can write the equation as:

T(x) = A*r^x + B

Where A is the difference between the initial temperature and the room temperature, B is the room temperature, and r is a positive number smaller than 1, that says "how fast" the temperature decreases (and x is the variable, in units of time)

We know that the initial temperature

A = 200° - 72° = 128°

B = 72°

T(x) = 128°r^x + 72°

The only option with those two values is option B.

T(x) =  128(0.989)^x + 72

We should check that when x = 2m, the temperature must be 197°

T(2m) = 128*(0.989)^2 + 72 = 197.2° (that we can round down to 197°)

So this equation is correct

Now we want to find the time such the temperature is 172°F

then:

172° = 128°(0.989)^x + 72°

100° = 128°(0.989)^x

100/128 = (0.989)^x

x = ln(100/128)/ln(0.989) = 22.3 minutes.

Let's check in our equation:

T(22.3) =  128°(0.989)^22.3 + 72 = 172°

I hope this helps you

Answer:

a:) combination

b:) permutation

c:) combination

Step-by-step explanation:

There are 330 ways the coach can select a batting order of seven players from an 11 person team. Therefore, option B is the correct answer.

Combinations are selections made by taking some or all of a number of objects, irrespective of their arrangements. The number of combinations of n different things taken r at a time, denoted by nCr and it is given by, nCr=n!/r!(n−r)!,where 0 ≤ r ≤ n.

To determine the number of ways the coach can select a batting order of seven players from an 11 person team, we can use the combination formula, which is given by:

nCr = n! / r!(n-r)!

where n is the total number of players on the team, and r is the number of players in the batting order. In this case, n = 11 and r = 7.

So, the number of ways the coach can select a batting order of seven players from an 11 person team can be calculated as follows:

11C₇ = 11! / (7!(11-7)!)

= (11 x 10 x 9 x 8) / (4 x 3 x 2 x 1)

= 330

Therefore, option B is the correct answer.

To learn more about combination here:

brainly.com/question/17196495.

#SPJ2

Answer:

Youth tickets = $4

Step-by-step explanation:

Let x and y represent the price of adults and youth tickets respectively;

Given;

A youth ticket is half the price of an adult ticket

y = 0.5x ......1

They paid $24 for 2 adult tickets and 2 youth tickets.

2y + 2x = 24 ......2

Substituting equation 1 into 2;

2(0.5x) + 2x = 24

x + 2x = 24

3x = 25

x = 24/3 = 8

Since, y = 0.5x

y = 0.5(8) = 4

Adult tickets = $8

Youth tickets = $4

Answer:

(40+20)^d=c

Step-by-step explanation:

Answer:= let me double check yall

Step-by-step explanation:40+20+c+d

Answer:

On the circle

Step-by-step explanation:

I dont know the exact way to do this, but i graphed them, then drew a circle, and it was in the line. So i think its on the line

Answer:inside

Step-by-step explanation:

The distance from A to M is sq rt of 41

The distance from A to V is sq rt of 40

Answer:

15

Step-by-step explanation:

you have to take 98 away from 113.

Answer:

X= 15

Step-by-step explanation:

Answer:

10.10

Step-by-step explanation:

Answer:

The two bases of a rectangular prism are rectangles, while the two bases of a triangular prism are triangles.

Step-by-step explanation:

Any prism has two bases.  Since we are talking about a rectangular prism and a triangular prism both must have two bases.

For example, a square prism has two bases and they are both square.

In this case a rectangular prism has two bases that are rectangles and a triangular prism also has two bases and both bases are triangles.

Note: For the figure to have only one base it must be called a pyramid.

Thus, the answer is:

The two bases of a rectangular prism are rectangles, while the two bases of a triangular prism are triangles

Answer:

a

Step-by-step explanation:

Answer:

center = [tex](-4,8)[/tex]

Radius = 7 units

Step-by-step explanation:

Given: Equation of circle is [tex]x^2+y^2+8x-16y+31=0[/tex]

To find: Radius and center of the circle

Solution:

Equation of circle is [tex](x-a)^2+(y-b)^2=r^2[/tex]

Here, [tex](a,b)[/tex] is the center and r is the radius.

[tex]x^2+y^2+8x-16y+31=0\\\left [ x^2+2(4)x+4^2 \right ]+\left [ y^2-2(8)y+8^2 \right ]+31=4^2+8^2[/tex]

Use formula [tex](u+v)^2=u^2+v^2+2uv[/tex]

[tex](x+4)^2+(y-8)^2=16+64-31\\(x+4)^2+(y-8)^2=49=7^2[/tex]

On comparing this equation with equation of circle,

center = [tex](-4,8)[/tex]

Radius = 7 units

Answer:

center: (4,-4)

Radius: 9

Step-by-step explanation:

KHAN ACADEMY

Answer:

-243

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

because 36 is a perfect square root.

Answer:

Step-by-step explanation:

rectangle and triangle is here

area of triangle = 1/2 * 5 * 12 = 30

area of rectangle = 1 * 12 = 12

total is 12 + 30 = 42

Answer: [tex]x=12[/tex]

Step-by-step explanation:

[tex]9+9=3(x-6)[/tex]

simplify: add the 9's together and distribute the 3

[tex]18=3x-18[/tex]

add 18 to both sides

[tex]36=3x[/tex]

divide by 3

[tex]12=x[/tex]

[tex]x=12[/tex]

Answer:

V = π*r^2*h/3

the formula not sure which answer represent that

117.29 ft^3

Step-by-step explanation:

Surface area = [tex]\frac{4}{3} \pi r^{3}[/tex] = [tex]\frac{4}{3}[/tex] x 3.14 x 3 x 3 x 3 = 3.14 x 4 x 3 x 3 = 113.04 yd^2 = approx. 113.1 yd^2

Answer:

What are you options

Step-by-step explanation:

Answer:

a = 47

b = 23.87

c = 90

d = 35.59

Step-by-step explanation:

I can only help this much. Not sure what the other two others below are asking

Answer:

Step-by-step explanation:

Quotient means result of division

anything raised to 0 is 1

(-3)^0 = 1

(-3)^2 = -3 * -3 = 9

Quotient = 1/9

Answer:

1/9

Step-by-step explanation:

Answer:

A=1005.31 yd2

V=2412.74 yd3

Step-by-step explanation:

V=πr2h

A=2πrh+2πr2

The question is missing. The complete question is:

Two datasets arranged in descendind order are: {8,x,4,1} and {9,y,5,2}. If the medians of the two given datasets are equal, what is the value of

(y-x)² ?

Answer: (y-x)² = 1

Step-by-step explanation: Median is the middle term of a data set.

In both datasets, there are an even quantity of number, so, to calculate median, sum the two center values and divide it by 2.

1) To facilitate, arrange it in ascending order:

(1,4,x,8) and (2,5,y,9)

Median of the first:

[tex]\frac{4+x}{2}[/tex]

Median of the second:

[tex]\frac{5+y}{2}[/tex]

As medians are the same:

[tex]\frac{4+x}{2}[/tex] = [tex]\frac{5+y}{2}[/tex]

4+x = 5+y

x - y = 5 - 4

x - y = 1

The question asks for (y-x)², so

y - x = -1

(y-x)² = (-1)²

(y-x)² = 1

Answer:

You are gonna need to gimme that  shaded area

Step-by-step explanation:

I cant do it without them

Answer:

144

Step-by-step explanation:

72 the 72 it equals it and plus they are adjacent

Answer:

The new volume is 7^3 or 343 times the old volume

Step-by-step explanation:

The original sphere has a volume of

V = 4/3 pi r^3

The radius is multiplied by 7

The new volume is

V = 4/3 pi (7r) ^3

V = 4/3 pi (7)^3 r^3

The new volume is 7^3 or 343 times the old volume

Answer:48

Step-by-step explanation:

Answer:

48 pecies

Step-by-step explanation:

Odun's share=80x 6/10

Odun's share=48

Hope you understand