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NeX [460]
3 years ago
6

When Ryan counted some dimes and quarters he had 196 coins and a total of $39.40. How many coins of each kind does Ryan have?

Mathematics
1 answer:
Nonamiya [84]3 years ago
6 0
Quarters = x
dimes = 196 - x

10(196 - x) + 25x = 3940
1960 - 10x +25x = 3940
1960 + 15x = 3940
15x = 1980
x = 132

169 - 132 = 64

Therefor there are 132 quarters and 64 dimes
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Which inequality is equivalent to X-4 <9?
Sergeu [11.5K]

<em>Answer</em><em> </em><em>with</em><em> </em><em>explanation</em><em>:</em>

The Given Inequality is

  |x-4|<9

Modulus of a number yields always a positive value.

→|x-4|= x-4, when, x-4≥0

                     That is , x≥4.

         = -(x-4), when, x-4<0

                    means, x<4.

     it can be Written as

 → -9<x-4<9

→ -9+4 < x -4+4 < 9+4

→ -5<x<13

→x∈(-5,13)

♡ <em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>♡</em>

4 0
3 years ago
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Which diagram shows parallel lines cut by a transversal?
Arada [10]
Only the third model shows parallel lines cut by a transversal. 

We can solve this problem by using some properties that parallel lines cut by a transversal have. First of all, corresponding angles are congruent, and since the angles in figure 1 are corresponding but not congruent, that means that figure one is out. 

In addition, in figure two, alternate exterior and interior angles of parallel lines intersected by a transversal are congruent, so since they are not in the picture, that means that this figure is also out. 

Figure three is correct because since those are same side interior angles, they need to be supplementary for those to be two parallel lines intersected by a transversal. Since they do, in fact, add up to 180°, that means that the answer is figure three. 
5 0
3 years ago
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What is the equation of the line that passes through the point (3,-1) and is perpendicular to the equation y= -3x+2?
Sauron [17]

Answer:

i think it is b or d im not for sure though

Step-by-step explanation:

6 0
2 years ago
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Mr.Nelson bought a coat on sale for $27 less than third its original price . He paid $54. What was the original price?
MAVERICK [17]

Answer:

$243.

Step-by-step explanation:

We can use algebra here.

Let x = the original price.

Then  1/3 x - 27 = 54

1/3x = 54 + 27 = 81

x = 81 /  1/3

x = 81 * 3

x = $243  (answer).

6 0
3 years ago
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Countering a cost $9.40 per sales tax. After sales tax, it cost $9.87. What is the sales tax rate?
Nady [450]
STEP 1:
find the sales tax (decimal form)

x= sales tax

Cost + (Cost * Sales Tax)= Total
plug in known numbers

$9.40 + ($9.40 * x)= $9.87

9.40 + 9.40x= 9.87
subtract 9.40 from both sides

9.40x= 0.47
divide both sides by 9.40

x= 0.47/9.40

x= 0.05 sales tax decimal form


STEP 2:
find sales tax percentage

= 0.05 * 100
or move decimal to the right two decimal places

= 5% sales tax percent form


ANSWER: The sales tax is 5% (or 0.05 in decimal form)

Hope this helps! :)
6 0
2 years ago
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