Estimate the cost of painting the inner
wall of a well, if the depth of the well is
14 ft and the diameter is 8 ft. The cost of
painting 2.5 sq. ft is 20.​

Answer:

100

Step-by-step explanation:

Givens

WX = 4 + 3 = 7

ZY = 7 + 6 = 13

Height = 4 + 6 = 10

Formula

Area = (WX + ZY ) * height /2

Solution

Area = (7 +13)*10 / 2

Area = 20*10/2

Area = 200/2

Area = 100

Answer:

c)30%

Step-by-step explanation:

Step one:

given data

The shopkeeper said each pair of earrings cost Rs. 12

if he offered 12 pairs for Rs. 100.

let us find the cost per pair

= 100/12

=Rs. 8.3 per pair

Required

The percent discount

Step two:

%percent discount= 12-8.3/12*100

%percent discount= 3.66/12*100

%percent discount= 0.305*100

%percent discount= 30.5%

Answer: (1/3,-7); x=1/3; translated to the right 1/3 unit and down 7 units

Step-by-step explanation:

The parent function is:

g(x) = IxI

And we have:

f(x) = I6x - 2I - 7

We canr rewrite f to get:

f(x) = 6*Ix - 1/3I - 7

Then, now let's define some transformations:

If we start with g(x), a translation of N units to the right is:

f(x) = g(x - N)

if we start with g(x), a translation of N units up is:

f(x) = g(x) + N

A translation down would be:

f(x) = g(x) - N

And a vertical dilation of scale factor A is written as:

f(x) = A*g(x)

Then in this case we have:

A translation to the right of 1/3 units.

A dilation of scale factor 6.

A translation down of 7 units.

And the axis of symmetry will be when the absolute value part is equal to zero, or when

6*Ix - 1/3I = 0

And that is when x = 1/3.

Then the correct option is:

(1/3,-7); x=1/3; translated to the right 1/3 unit and down 7 units

Answer:

I think it is C you should practice This is easy

Step-by-step explanation:

Answer:

The percent increase should be 42%

Step-by-step explanation:

Subtract 131 from 92, you'll get 39

Divide, 39/92=423913....

Simply, I got 42%

Answer:2

Step-by-step explanation:

Answer:

ok

[tex]\pi = \frac{22}{7} or \: 3.142[/tex]

Step-by-step explanation:

[tex]c = 2\pi \: r \\ c = 2 \times \frac{22}{7} \times 15 \\ 94.28[/tex]

Answer:

C = 90 units²

Step-by-step explanation:

Since we are using 3 for π, simply substitute the information into the equation:

C = 2(3)(15)

C = 90 units²

Answer:

2201.8348 ; 3 ; x / (1 + 0.01)

Step-by-step explanation:

1)

Final amount (A) = 2400 ; rate (r) = 6% = 0.06, time, t = 1.5 years

Sum = principal = p

Using the relation :

A = p(1 + rt)

2400 = p(1 + 0.06(1.5))

2400 = p(1 + 0.09)

2400 = p(1.09)

p = 2400 / 1.09

p = 2201.8348

2.)

12000 amount to 15600 at 10% simple interest

A = p(1 + rt)

15600 = 12000(1 + 0.1t)

15600 = 12000 + 1200t

15600 - 12000 = 1200t

3600 = 1200t

t = 3600 / 1200

t = 3 years

3.)

A = p(1 + rt)

x = p(1 + x/100 * 1/x)

x = p(1 + x /100x)

x = p(1 + 1 / 100)

x = p(1 + 0.01)

x = p(1.01)

x / 1.01 = p

x / (1 + 0.01)

Answer:

2201.8348 ; 3 ; x / (1 + 0.01)

Step-by-step explanation:

Hope this helps! (:

Answer:

Angle CDB would be the answer

Answer:

D

Step-by-step explanation:

The correct diagram is D.

The diagram that   shows the correct setup for an electromagnet is Option D)

The correct setup of an electromagnet involves the following steps:

1. Obtain a ferromagnetic core, such as iron, steel, or a magnetic material.

2. Wrap an insulated wire around the ferromagnetic core, forming a coil.

3. Connect the ends of the wire to a power source, such as a battery or power supply.

4. When current flows through the wire, it creates a magnetic field, magnetizing the core and forming the electromagnet.

5. The strength of the electromagnet can be controlled by adjusting the current flowing through the wire.

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Answer:

B.

Step-by-step explanation:

The 6 has moved up because of addition instead of subtraction

a)11cm

b)25cm

you do 44cm divide by 4 which equals to 11

Answer:

15

Step-by-step explanation:

Answer:

Manu has 15.

Step-by-step explanation:

Manu picked 10 apples

He has ten

Sten gave him ten more

Manu has 20

Manu gives Klara 5

Manu has 15.

Answer:

y = 3x

2y + 2x = 85

x = 10 5/8 y = 31 5/8

Step-by-step explanation:

Let’s say that y = length and x = width. We know that the length is 3 times the width (y = 3x) and the perimeter of the rectangle is 85 (2y + 2x = 85). To solve the system of equations, substitute y = 3x into the other equation. This results in the equation 2(3x) + 2x = 85. We now simplify the equation. 6x + 2x = 85 8x = 85 x = 10 5/8.

Now that we know x, we can substitute it into either equation to solve for y. y = 3(10 5/8) y = 31 5/8

The  system of equation which represent the given situation is 85 = 8x.

And the length and width of the rectangle is 36.86 and 10.62unit respectively.

Perimeter is the distance around the edge of a shape.

[tex]P = 2(l+w)[/tex]

where,

P is the perimeter of the rectangle

l is the length of the rectangle

w is the width of the rectangle.

According to the given question here:

We have,

The perimeter of the rectangle is 85 unit.

Let the width of the rectangle be x unit.

Then, the length of the rectangle be 3x.

Therefore, the equation which represent the situation is given by

85 = 2(x + 3x)

⇒85 = 2(4x)

⇒ 85 =8x

⇒ x = 85/8 = 10.62unit

⇒ 3x = 10.62 × 3 = 31.86 unit.

Hence, the length of the given rectangle is 31.86 unit and width is 10.62 unit .

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Answer:

66

Step-by-step explanation:

The total number of lockers that were full in the morning was 72. Since 6 were empty in the afternoon, 72-6 = 66 full lockers

Answer:

A-0 B-4 C-5 D-3.5 E-6 F-4.5

Step-by-step explanation:

I followed the steps

Answer:

2, 2.5, 3, 3.5, 4, 4.5

Step-by-step explanation:

Answer:

The mass of CO2 produced by one liter of fuel is 2,200 gr/lt

Step-by-step explanation:

Proportions

To find the cross-relation between the mass of CO3 produced and the liters of fuel used we must find the unit rate of both relationships given.

We know:

The car uses 5 liters of fuel per 100 Km. The unit rate is 5/100 lt/km

The car produced 110 grams of CO2 for each kilometer traveled. The unit rate is 110 gr/Km

Since the kilometers is the common unit, we find the unit rate of CO2/fuel:

[tex]\displaystyle \frac{\frac{110}{1}}{\frac{5}{100}}=\frac{110}{1}}*\frac{100}{5}}= 110*20 = 2,200[/tex]

The mass of CO2 produced by one liter of fuel is 2,200 gr/lt

Answer and Step-by-step explanation:

Let us assume two boys are jogging.

Boy 1 jogging speed is 10 kilometres per hour

Boy 2 jogging speed is 20 kilometres per hour

This can be represented in terms of distance, d and time, t. When we do this, we have:

d = 10t boy 1

d = 20t boy 2

This implies that boy 1 rate of change is 10 kilometers for every one hour and boy 2 is 20 kilometers for every 1 hour.

From here, we can conclude that the rate of change of boy 2 is twice the rate of change of boy 1.

Answer:

SHE ADDED THE COST OF THE HAIRCUT TO HER BALANCE.

Step-by-step explanation:

Instead of debited the cost of the haircut stephanie done the mistake by entering the charges of the hair cut into her balance. So due to this, the wrong entry should be recorded.

Therefore the above situation represents the situation in which she did the wrong

Hence, the same is to be considered

Answer:

$16.62 each

Step-by-step explanation:

First, find 20% of the bill to figure out how much the tip is worth:

20% over 100% = $x over $55.40 ---> 20 * 55.4 / 100 = 11.08

Now that we know the tip is $11.08, next add it on to the bill:

$11.08 + $55.40 = $66.48

Now divide this by 4 to split the bill evenly between the 4 friends:

$66.48 / 4 = $16.62

Answer:

1062882

Step-by-step explanation:

Seven digits numbers, with repetition of digits, having 6 or 9 at the last one's place :

The first six digits can be filled with 9 options each (numbers 1 to 9) , & the last digit can be filled with 2 options (number 6 & 9)

So, total 7 digit numbers as per given condition = 9 x 9 x 9 x 9 x 9 x 9 x 9 x 2 = 1062882

Answer:

You would have 10 cents.

Step-by-step explanation:

Answer:

z=-1

Step-by-step explanation:

8z+7=-15

8z=-15+7

z=-8/8

z=-1

Exact Form:

z = − 11/4

Decimal Form:

z == − 2.75

Mixed Number Form:

z = − 2  3/4

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Answer:

So, we know that a square has all sides equal. We need to multiply 15 by 15 to get the area of the square.

A = L x W

A = 15 x 15

   = 225cm squared

Therefore, your answer is 225cm squared.

Answer:

h

Step-by-step explanation:

Answer:

$1720 total liabilities

Step-by-step explanation:

The total liabilites are $1,720.

Liability usually means that you are responsible for something, and it can also mean that you owe someone money or services.

Now given that,

Car worth = $3,200

Loan amount = $1,400

Owe on credit card = $320

Now since liability is the money owe by someone so in the present condition.

Total liabilities = Loan amount + Owe on credit card

⇒ Total liabilities = $1,400 + $320

⇒ Total liabilities = $1,720

which is the required total liabilities.

Thus, the total liabilites are $1,720.

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Answer:

Solution in photo

Step-by-step explanation: