Please help!! :( Needs to be done soon

Answer:

It's required [tex]7.48\ m^2[/tex] of sheet for the tank

Step-by-step explanation:

Surface Area of a Cylinder

Given a right cylinder of base radius r and height h, the surface area is calculated as follows:

[tex]S=2\pi r^2+2\pi r h[/tex]

The cylindrical tank has a height of h=1 m and a base diameter of 140 cm. The radius is half the diameter, thus r=140/2 = 70 cm = 0.7 m. Substituting:

[tex]S=2\pi 0.7^2+2\pi (0.7)(1)[/tex]

[tex]S=2\pi 0.49+1.4\pi[/tex]

[tex]S=2.38\pi[/tex]

[tex]\boxed{S=7.48\ m^2}[/tex]

It's required [tex]7.48\ m^2[/tex] of sheet for the tank

Answer:

The equation of line that passes through the point (8,-7) and is parallel to the line 5x+4y=16 is  [tex]\mathbf{y=-\frac{5}{4}x+3}[/tex]

Step-by-step explanation:

We need to write an equation of the line that passes through the point (8,-7) and is parallel to the line 5x+4y=16.

The equation will be of form [tex]y=mx+b[/tex] where m is slope and b is y-intercept.

Finding slope of the line:

Since both the lines are parallel, and we know that parallel lines have same slope.

The slope of given line [tex]5x+4y=16[/tex] can be found by writing in slope-intercept form [tex]y=mx+b[/tex]

[tex]5x+4y=16\\4y=-5x+16\\y=-\frac{5}{4}x+16[/tex]

Comparing with [tex]y=mx+b[/tex] the slope m is: [tex]m=-\frac{5}{4}[/tex]

So, the slope of required line is: [tex]m=-\frac{5}{4}[/tex]

Now, finding y-intercept b

y-intercept can be found using slope [tex]m=-\frac{5}{4}[/tex] and point (8,-7)

[tex]y=mx+b\\-7=-\frac{5}{4}(8)+b\\-7=-5(2)+b\\-7=-10+b\\b=-7+10\\b=3[/tex]

So, we get y-intercept: b=3

Now, the equation of required line having slope [tex]m=-\frac{5}{4}[/tex] and y-intercept b=3 is:

[tex]y=mx+b\\y=-\frac{5}{4}x+3[/tex]

So, the equation of line that passes through the point (8,-7) and is parallel to the line 5x+4y=16 [tex]\mathbf{y=-\frac{5}{4}x+3}[/tex]

Answer:

x = -22

Step-by-step explanation:

The given expression is :

-0.57x+0.27x = 6.6

We need to find the value of x.

x(-0.57+0.27) = 6.6

x(-0.3) = 6.6

[tex]x=\dfrac{6.6}{-0.3}\\\\x=-22[/tex]

So, the value of x is -22.

Answer:

The coordinates of the centroid are (0, 5)

Step-by-step explanation:

The coordinates of the centroid of a triangle whose vertices (x1, y1), (x2, y2), and (x3, y3) are ([tex]\frac{x1+x2+x3}{3}[/tex] , [tex]\frac{y1+y2+y3}{3}[/tex])

In Δ ABC

∵ A = (-20, 0), B = (0, 15), C = (20, 0)

∴ x1 = -20, x2 = 0, x3 = 20

∴ y1 = 0, y2 = 15, y3 = 0

∴ The centroid = ([tex]\frac{-20+0+20}{3}[/tex] , [tex]\frac{0+15+0}{3}[/tex]) = ([tex]\frac{0}{3}[/tex] , [tex]\frac{15}{3}[/tex]) = (0, 5)

∴ The coordinates of the centroid of Δ ABC are (0, 5)

In Δ DBE

∵ D = (-15, 0), B = (0, 15), E = (15, 0)

∴ x1 = -15, x2 = 0, x3 = 15

∴ y1 = 0, y2 = 15, y3 = 0

∴ The centroid = ([tex]\frac{-15+0+15}{3}[/tex] , [tex]\frac{0+15+0}{3}[/tex]) = ([tex]\frac{0}{3}[/tex] , [tex]\frac{15}{3}[/tex]) = (0, 5)

∴ The coordinates of the centroid of Δ DBE are (0, 5)

In Δ FBG

∵ F = (-5, 0), B = (0, 15), G = (5, 0)

∴ x1 = -5, x2 = 0, x3 = 5

∴ y1 = 0, y2 = 15, y3 = 0

∴ The centroid = ([tex]\frac{-5+0+5}{3}[/tex] , [tex]\frac{0+15+0}{3}[/tex]) = ([tex]\frac{0}{3}[/tex] , [tex]\frac{15}{3}[/tex]) = (0, 5)

∴ The coordinates of the centroid of Δ FBG are (0, 5)

∵ The three triangles are symmetric about the y-axis

→ That means they have the same centroid and it lies on the y-axis

∴ The coordinates of the centroid are (0, 5)

Answer:

Answer below

Step-by-step explanation:

Rational:

3.597

74.721

5/2

0

-11

(all the rest are irrational)

Answer:

Miles flown in 23.19 hours = 166968 miles

Step-by-step explanation:

Given that:

A satellite flies 55584 miles in 7.72 hours

We will find the unit rate first,

Unit rate = [tex]\frac{55584}{7.72}[/tex]

Unit rate = 7200 miles per hour

Miles flown in 23.19 hours,

Miles flown = 7200 * 23.19

Miles flown = 166968 miles

Hence,

Miles flown in 23.19 hours = 166968 miles

Answer:

S8 = 112

Step-by-step explanation:.​

The question is incomplete

Assuming we are given the following

First term a =7

number of terms n = 8.

Common difference d=2

We can find the sum of the first 8terms S8

Substitute the given values

S8 = 8/2[2(7)+(8-1)(2)]

S8 =4(14+7(2))

S8=4(14+14)

S8 = 4(28)

S8 = 112

Hence the sum of the first 8terms is 112

Note that the values are assumed values

Answer:

B Inverse Variation

Step-by-step explanation:

I think that is the answsr

Answer:

The Correct is B inverse variation

Answer:

B

Step-by-step explanation:

I checked it and it’s right hope this helps!!

Answer:

Step-by-step explanation:

[tex]2^{14}[/tex] paisa  =16,384 paisa

Answer:

[tex]g(n) = 10 * 3^{n}[/tex]

Step-by-step explanation:

Given

See attachment for table

Required

Determine the explicit formula for the table

First, we need to check if the guppies increases at arithmetic progression or geometry progression.

For arithmetic progression:

We calculate the common difference (d)

[tex]d = g(n) - g(n-1)[/tex]

Take n as 1

[tex]d = g(1) - g(1-1)[/tex]

[tex]d = g(1) - g(0)[/tex]

From the table:

[tex]g(1) = 30\ \&\ g(0) = 10[/tex]

[tex]d = 30 - 10[/tex]

[tex]d = 20[/tex]

Take n as 2

[tex]d = g(2) - g(1)[/tex]

From the table:

[tex]g(1) = 30\ \&\ g(2) = 90[/tex]

[tex]d = 90 - 30[/tex]

[tex]d = 60[/tex]

The two differences are not equal. So, this

For geometry progression:

We calculate the common ratio (r)

[tex]r = \frac{g(n)}{g(n-1)}[/tex]

Take n as 1

[tex]r = \frac{g(1)}{g(1-1)}[/tex]

[tex]r = \frac{g(1)}{g(0)}[/tex]

From the table:

[tex]g(1) = 30\ \&\ g(0) = 10[/tex]

[tex]r = \frac{30}{10}[/tex]

[tex]r = 3[/tex]

Take n as 2

[tex]r = \frac{g(2)}{g(1)}[/tex]

From the table:

[tex]g(1) = 30\ \&\ g(2) = 90[/tex]

[tex]r = \frac{90}{30}[/tex]

[tex]r = 3[/tex]

The two ratios are equal.

So, the next step is to calculate the explicit formula using n term of a geometric progression.

Because the progression starts from 0, we make use of the following formula

[tex]g(n) = g(0) * r^{n}[/tex]

Substitute values for g(0) and r

[tex]g(n) = 10 * 3^{n}[/tex]

Hence:

The explicit formula is: [tex]g(n) = 10 * 3^{n}[/tex]

Answer:

Okay look at the graph, at x = 11, the y of the line is between 500 and 450. 500+450=950

950/2=475 so (11,475)

Let's take x=6, the y would then be 600. If x=9, y would be 525. Just try to look at the graph and see from there. Let me know the answer.

Answer:

False

Step-by-step explanation:because it is.

Answer:

hope that helps

Answer:

I THINK SLOPE 3

Step-by-step explanation: MY GUT TELLS ME SO...

Answer:

because the pollution created by these industries affects the United States more than Canada

Step-by-step explanation:

SMARTS!!!

Answer:

[tex](14 + 7) + 12 = 14 + (7 + 12)[/tex]

Step-by-step explanation:

Given

[tex](14 + 7) + 12[/tex] --- [Missing in question]

Required

Select equivalent expression

[tex](14 + 7) + 12[/tex]

Associative property states that:

[tex](a + b) + c = a + (b + c)[/tex]

In this case:

[tex]a = 14[/tex]

[tex]b = 7[/tex]

[tex]c = 12[/tex]

So, we have:

[tex](a + b) + c = a + (b + c)[/tex]

[tex](14 + 7) + 12 = 14 + (7 + 12)[/tex]

B. is correct

Answer:

7x26

Step-by-step explanation:

Answer:

x = -17/8

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

10(x + 1) = 2x - 7

Step 2: Solve for x

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Here we see that -45/4 does indeed equal -45/4.

∴ x = -17/8 is the solution to the equation.

Answer:

6

Step-by-step explanation:

Answer:

4.25 mph i think

Step-by-step explanation:

4x 3 =12

1/4 x 4 = 1

12 + 1 = 13

Answer:

x = 53

Step-by-step explanation:

The entire line is BC, the line DE bisects the line BC, meaning it cut the line in half. So CE is half of BC, so the equation for CE has to be multiplied by 2. Therefore:

5x - 3 = (2x + 25)2

multiply

5x - 3 = 4x + 50

ad 3 to both sides

5x = 4x + 53

subtract 4x from both sides

x = 53

Input into the equation to check:

5x - 3 = (2x + 25)2

5(53) - 3 = (2(53) + 25)2

265 - 3 = (106 + 25)2

262 = (131)2

262 = 262, it's correct :)

Answer:

Step-by-step explanation:

Answer:

72

Step-by-step explanation:

brainliest please

Answer:

A

Step-by-step explanation:

Answer:

x=2, x=-2, and x=-1

Step-by-step explanation:

Function: f(x)=(x-2)(x+2)(x+1)²

We can solve each one of the zeros by making the expressions (the ones in the parentheseis) equal zero.

So we have three equations:

1.(x-2)=0

2.(x+2)=0

3.(x+1)²=0

Solve.

1.x-2=0

x=2

2. x+2=0

x=-2

3. (x+1)²=(x+1)(x+1)=0

(x+1)=0

x=-1

(x+1)=0

x=-1

Since those two were the same we can just say x=-1 once.

Here are the three zeros:

x=2, x=-2, and x=-1

hope this helps!

Answer:

$210

Step-by-step explanation:

Cost of 44kg onions = $308

Cost of 1kg onion = [tex] \frac{308}{44} = 7[/tex]

Cost of 30kg onions = [tex]30 \times 7 = 210[/tex]