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3 years ago

There are 276 nickels. How many whole dollars can be made from this and with how many nickels left over?

1 answer:

6 0

1 nickel = 5 cents
1 dollar = 20 nickels

You can make 13 dollars plus 16 nickels left over

20 * 13 = 260
then 260 + 16 = 276

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There are two bags containing only purple and red marbles.

Svet_ta [14]

Answer:

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2 years ago

A fish tank is in the shape of a cube. Its volume is 125 ft cubed. What is the area of one face of the tank?

Gennadij [26K]

Since the volume of a cube is equal to the length cubed, $V= x^{3]$ . Substitute 125 for V giving you $125=x^3$ . Take the cubed root of 125 to give you $x=5$ . To find the area of a side, you have to take the length and square it. Therefore, $A= x^{2}$ . Substitute 5 for x giving you $A=5^2$ . Evaluate the equation to give you $A=25$ .

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4 years ago

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Is the following sentence a statement or not a statement? 3x + 4 = 17

VashaNatasha [74]

Yes it's a statement

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3 years ago

Confusion .. help please

bixtya [17]

Answer:

Step-by-step explanation:

We are to determine the value of KM which is adjacent to angle 35. we also have the value for the hypotenuse. Thus we would use COS

Cos 35 = adjacent /hypotenuse

0.8192 = adjacent / 123

adjacent = 0.8192 x 123 = 100.7557 cm

100.8 cm

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

5 0

3 years ago

Solve the simultaneous equations

Contact [7]

Answer:

The solution for given system of equations is: x = 6 and y = 3

(6,3)

Step-by-step explanation:

Given equations are:

$3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2$

There are three methods to solve simultaneous equations

Elimination
Substitution
Co-efficient method

We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

$3x+4y - (3x-y) = 30-15\\3x+4y-3x+y = 15\\5y = 15\\\frac{5y}{5} = \frac{15}{5}\\y = 3$

Putting y = 3 in equation 2

$3x-3 = 15\\3x = 15+3\\3x = 18\\\frac{3x}{3} = \frac{18}{3}\\x = 6$

Hence,

The solution for given system of equations is: x = 6 and y = 3

(6,3)

7 0

3 years ago