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Nastasia [14]
3 years ago
10

Three cubes and one cone balances on a scale with 12 marbles. If one cone balances with one cube and eight marbles, then how man

y marbles balance with one cone?
PLS HELP FAST!!!!!!!!!!!!
Mathematics
1 answer:
sasho [114]3 years ago
4 0
Well, you got that 4 cubes = 4 marbles, so that clears that cubes = marbles, so then then a cone would be 9 marbles.
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What is the result of adding these two equations?
timofeeve [1]

Answer:

the result of adding these two equations is

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Step-by-step explanation:

We are given two equations

5x − y  = 6          eq. 1

−2x + y = 8        eq. 2

Add the like terms together

5x - 2x = 3x

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6 + 8 = 14

So the result of adding these equations is

3x + 0 = 14

3x = 14

Bonus:

The value of x is

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x = 14/3

6 0
3 years ago
If you ride your bike 12 miles per hour, how long would it take<br> you to travel 72 miles ?
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Answer:

It would take 6 hours for you to travel 72 miles.

Step-by-step explanation:

This question can be solved by a simple rule of three.

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Each hour, you ride 12 miles.

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So:

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4 0
2 years ago
An adjustable ladder on the back of the firetruck is needed for firefighters to climb to very high buildings. The maximum angle
torisob [31]
Cos 70 = horizontal distance /
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A projectile is launched upward from a height of 704 feet with an initial velocity of 112 ft/s. The equation gives the height h
Feliz [49]
We are given the data ho equal to 704 feet and vo equal to 112 feet per second. We apply then kinematics equation: h = ho + vot - 1/2 gt2. Substituting to the given equation, 
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4 0
3 years ago
Jamie evaluated this expression. StartFraction left-bracket (2 cubed) (2) right-bracket Superscript 4 Baseline Over 2 Superscrip
SVETLANKA909090 [29]

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Step-by-step explanation:

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\frac{(2^3)(2)^4}{2^{10}} \\

Using the following laws of indices;

\frac{a^m}{a^n}  = a^{m-n}\\a^m \times a^n = a^{m+n}

The expression becomes;

Step 1: Multiplication rule

=\frac{(2^3)(2)^4}{2^{10}} \\= \frac{2^{3+4}}{2^{10}}\\= \frac{2^7}{2^{10}}

Using the division rule of exponent (Quotient of powers);

= \frac{2^7}{2^{10}} \\= 2^{7-10}\\= 2^{-3}\\also \ a^{-m} = \frac{1}{a^m}\\ 2^{-3}=  \frac{1}{2^3}\\\frac{1}{2^3} = \frac{1}{8}

Hence the result of the expression is 1/8

5 0
3 years ago
Read 2 more answers
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