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Radda [10]
3 years ago
9

How to solve for the answer

Mathematics
1 answer:
yarga [219]3 years ago
3 0
A.step 1 because it should be x^2 not 2x
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Markers are on sale for $4.50 for Black, $3.25 for Red, and $1.98 for Green. He spends a total of $284.24. If he buys a certain
mixas84 [53]
Let x be number of black markers

4.5x + 2x3.25x + 3x1.98x = 284.24
16.94x = 284.24
x = 16.78 = 17

The person bought 17 black pens, 34 red and 51 green
5 0
3 years ago
Please help! I really need help on this. Also if I could get an explanation on this it would really help.
Firdavs [7]

Answer:

x= 10

Step-by-step explanation:

Since the triangles are congruent

<B = <E

50 = 5x

Divide each side by 5

50/5 = 5x/5

10 =x

4 0
2 years ago
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Pleaseee help i need this to finish my work due tomorrow
yan [13]

Answer:

40

Step-by-step explanation:

11x+13=90

11x=77

x=7

49-9=40

4 0
2 years ago
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7y - 4.5 - 6y =<br><br><br><br> HELP ME IM SO CONFUSED
kotegsom [21]

Answer:

y=4.5

Step-by-step explanation:

8 0
3 years ago
Find the number of positive integers n is less than or equal to 1000 such that 15n is a perfect square.
boyakko [2]

Answer:

8 positive integers.

Step-by-step explanation:

One value of n would be 15 because 225 = 15^2.

Other values  are 225 * n where 15n  <= 1000 and n is a perfect square.

So n = 4 gives us 225* 4 = 900 which is a perfect square and 15*4 = 60.

n = 9  gives us 225 * 9 which is a perfect square and 15*9 = 135.

n = 16 gives us 225*16  and 15*16 = 240 , so OK.

n = 25   gives a perfect square and  and 15*25 = 375 - so OK.

n = 36 gives a perfect square and 15*36 = 540 - so OK.

n = 49 gives a perfect square and  15*49 = 735 - so OK.

n = 64 gives a perfect square and 15*64 = 960 - so ok.

n = 81 gives a perfect square and 15 * 81 = 1215  so NOT ok.

3 0
3 years ago
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