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grigory [225]
4 years ago
12

You bought a magazine for $5 and four erasers. You spent a total of $25. How much did each eraser cost? Include a let statement

in your answer.
Mathematics
2 answers:
8_murik_8 [283]4 years ago
6 0

Answer:

5 dollars

Step-by-step explanation:

Let x be the price of each eraser

We bought a magazine and 4 erasers with 25 dollars

so : 5+4x = 25⇒ 4x= 20⇒x= 20/4⇒ x=5

The eraser costs 5 dollars

ZanzabumX [31]4 years ago
3 0

Answer:

5$??.

Step-by-step explanation:

If a magazine was 5$, 25-5= 20. So then, 20÷4= 5. There fore an eraser costs 5$.

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When the shape of a bst approaches that of a perfectly balanced binary tree, what is the worst case performance characteristic o
irga5000 [103]

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In computing, binary bushes are mainly used for looking and sorting as they offer a way to save statistics hierarchically. a few common operations that may be conducted on binary trees encompass insertion, deletion, and traversal.

A binary tree has a special situation that each node could have a most of two youngsters. A binary tree has the benefits of each an ordered array and a linked listing as search is as brief as in a taken care of array and insertion or deletion operation are as fast as in related listing.

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7 0
2 years ago
Write an equation of the line that passes through (2,-4) and (0,-4)
Arte-miy333 [17]

y = mx + b

To find the slope(m), you use the slope formula:

m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

You plug in the points into the equation.

m = \frac{-4 - (-4)}{0 - 2}

m = \frac{-4+4}{0-2} = \frac{0}{-2} =0

The slope is 0

y = 0x + b

Any number multiplied by 0 is 0. So:

y = b

To find b, you plug in the y value of either of the points.

-4 = b

Your equation is:

y = -4 (This is a horizontal line)

5 0
3 years ago
1/3 (6x +12) - 2(x-7)=19
Morgarella [4.7K]

Answer:

no solution

Step-by-step explanation:

Given

\frac{1}{3}(6x + 12) - 2(x - 7) = 19 ← distribute parenthesis on left side

2x + 4 - 2x + 14 = 19 , that is

18 = 19 ← not possible

This indicates the equation has no solution

4 0
3 years ago
The one who answers first will be marked as the brainliest...
Svet_ta [14]

Answer:

53 and 41

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
In ABC, points D and E are the midpoints of and respectively. What are the slope and length of , if the slope and length of are
Scrat [10]

DE is parallel to BC since D is the midpoint of AB and E is the midpoint of AC.

<span>
Thus, DE and BC have the same slope (0.5) and basing on the formula for midpoint, the length of DE would be the equal half of BC and is equal to 1.6 units</span>

 

The slope and length of DE, if the slope and length of BC are 0.5 and 3.2 units, respectively are 0.5 and 1.6 respectively.

 

I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

4 0
4 years ago
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