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dsp73
3 years ago
5

An arxhitext built a road 4 1/3 miles long. the next road he built was 7 2/4 miles long. What is the combined lenth of the two r

oad?
Mathematics
2 answers:
forsale [732]3 years ago
5 0
4 1/3+7 2/4=4+1/3+7+1/2=11+(1/3+1/2)=11 5/6. For some reason, the fact that the question said 7 2/4 instead of 7 1/2 suggests that you may have misread the problem.
lina2011 [118]3 years ago
3 0
You would do 4 1/3 plus 7 2/4 and then to would get your answer which is 11 5/6
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Write the algebraic expression for... 16 less than a number n
jarptica [38.1K]

Answer: n-16

Step-by-step explanation:

The algebraic expression for 16 less than a number n is thesame thing as subtracting 16 from n which will be represented as: n - 16.

Therefore, the algebraic expression for 16 less than a number n will be = n - 16

4 0
3 years ago
Eggs are bought for 80c each and sold for R15 per dozen. What is the percentage profit (rounded off to the nearest percentage) ma
Mekhanik [1.2K]

The percentage profit made on the eggs is 56.25%

Data;

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  • Selling price = R15

<h3>Percentage Profit</h3>

This is the ratio between the profit to the cost price multiplied by 100.

But 1 R = 100 cents

15 R = x

1R = 100c\\15R = x\\x = 15 * 100\\x = 1500c

The Cost price for 1 dozen is

80 * 12 = 960c

The cost price of the eggs is 960c

The percentage profit here will be

\% profit = \frac{selling price - cost price}{cost price} * 100\\\% profit= \frac{1500-960}{960}*100\\ \%profit = \frac{540}{960}*100\\ \% profit= 56.25 \%

The percentage profit made on the eggs is 56.25%

Learn more on selling price here;

brainly.com/question/19104371

4 0
3 years ago
How many intersections are there of the graphs of the equations below? One-halfx + 5y = 6 3x + 30y = 36 none one two infinitely
Sergeu [11.5K]

Answer:

infinitely many

Step-by-step explanation:

You have the system

(1/2)x + 5y = 6

  3x  + 30y = 36

Multiplying the first equation by 6 results in 3x + 30y = 36, which is exactly the same as the second equation.  The two graphs coincide, and so there are infinitely many solutions to this system

4 0
3 years ago
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Which expression is equivalent to 2cos^2(x/2)- cos(x)?<br> Edge 2020
olchik [2.2K]

Given:

The expression is

2\cos^2(\dfrac{x}{2})-\cos (x)

To find:

The expression which is equivalent to the given expression.

Solution:

We have,

2\cos^2(\dfrac{x}{2})-\cos (x)

We know that,

\cos x=2\cos^2 (\dfrac{x}{2})-1

Using this formula, the given expression can be written as

2\cos^2(\dfrac{x}{2})-\left(2\cos^2(\dfrac{x}{2})-1\right)

=2\cos^2(\dfrac{x}{2})-2\cos^2(\dfrac{x}{2})+1

=1

Therefore, the given expression is equivalent to 1.

4 0
3 years ago
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ziro4ka [17]

Answer: linear/first degree

Step-by-step explanation:

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Hope this helps!! :)

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3 years ago
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