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Brrunno [24]
3 years ago
8

a store is giving away $10 coupons to every 7th person to enter the store and a $25 coupon to every 18th person too emter the st

ore whick person will be the first to get both coupons
Mathematics
1 answer:
almond37 [142]3 years ago
3 0
7,14,21,28,35,42,49,56,63,70,77,84,91,98,105,112,119,126
18,36,54,72,90,108,126 

So the first person to get both of them is the 126th person
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4.9t^2-2.78t-1.15=0 what is the value of T
zzz [600]

Answer:

t = 139/490 + sqrt(75671)/490 or t = 139/490 - sqrt(75671)/490

Step-by-step explanation:

Solve for t:

4.9 t^2 - 2.78 t - 1.15 = 0

4.9 t^2 - 2.78 t - 1.15 = (49 t^2)/10 - (139 t)/50 - 23/20:

(49 t^2)/10 - (139 t)/50 - 23/20 = 0

Multiply both sides by 10/49:

t^2 - (139 t)/245 - 23/98 = 0

Add 23/98 to both sides:

t^2 - (139 t)/245 = 23/98

Add 19321/240100 to both sides:

t^2 - (139 t)/245 + 19321/240100 = 75671/240100

Write the left hand side as a square:

(t - 139/490)^2 = 75671/240100

Take the square root of both sides:

t - 139/490 = sqrt(75671)/490 or t - 139/490 = -sqrt(75671)/490

Add 139/490 to both sides:

t = 139/490 + sqrt(75671)/490 or t - 139/490 = -sqrt(75671)/490

Add 139/490 to both sides:

Answer: t = 139/490 + sqrt(75671)/490 or t = 139/490 - sqrt(75671)/490

3 0
3 years ago
How many vetrtices and faces does this shape have i’ll mark brainliest
kipiarov [429]

Answer:

Step-by-step explanation:

this shape has five vertical faces

8 0
3 years ago
Read 2 more answers
Which side lengths form a right triangle?
Natalija [7]

Answer:

this is kinda confusing..So ill just answer the first question.

<h3>Explanation: The Pythagorean Theorem gives us a2 + b2 = c2 for a right triangle, where c is the hypotenuse and a and b are the smaller sides.</h3>

hope it helps.

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3 years ago
I need help his to do it
11111nata11111 [884]
The answer is 150 cm²
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3 years ago
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A merchant wants to establish the selling price of an item that costs him $4.50 with a 15% markup. What is his selling price?
OLga [1]

Answer:

the answer it $5.18

Step-by-step explanation:

$4.50 + ($4.50 x .15)

$4.50 + $0.68 = $5.18

4 0
3 years ago
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