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ohaa [14]
3 years ago
13

Christopher is stringing lights on trees for an event. Each tree needs a minimum of 850 lights. The current tree he is stringing

only has 250 lights on it . If each light set contains 30 lights ,what is the Minimum number of light sets needed to finish decorating this tree ?
Mathematics
1 answer:
QveST [7]3 years ago
8 0

Answer:

25

Step-by-step explanation:

850-250=500 500 divided by 30 = 25 light sets

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If tanx=-4/3 and x is in quadrant 2 then cos2x=?<br> A. 7/25<br> b. -3/5<br> c. -7/25<br> d. 3/5
sweet-ann [11.9K]

= (1 - tan^2 (x)) / (1 + tan^2 (x))  

= (1 - (-4/3)^2) / (1 + (-4/3)^2)  

= (1 - (16/9)) / (1 + (16/9))  

= (9 - 16) / (9 + 16) [By multiplying numerator and denominator with 9]  

= (-7) / (25)  

= -7/25

3 0
3 years ago
Mika has tent that is 7 feet wide by 10 feet long Mika wants to buy a plastic tarp to go under the tent the traps are sold for $
postnew [5]

Answer:

$350

Step-by-step explanation:

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6 0
3 years ago
an object falls 16t2 feet in t seconds. you drop a rock from a bridge that is 75 feet above the water. will the rock hit the wat
Goryan [66]

Answer:

No, the rock will not hit the water in 2 second but it will hit the water in t ≅ 2.17 second

Step-by-step explanation:

Let the distance be s in feet. i.e,  s= 16 t^2 where t is in second.

You drop a rock from a bridge that is 75 feet above the water.

Use the  expression s =16t^2 to solve for t:

Given: s =75 feet

then, substitute in the above expression:

75 = 16 t^2 or we can write it as:

t^2=\frac{75}{16}= 4.6875 or

t = \sqrt{4.6875}

⇒ t = 2.16506351 or t ≅2.17 second

Therefore, the rock hit the water in t≅2.17 second


5 0
3 years ago
What is the decimal for 25%​
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Answer:

.25

Step-by-step explanation:

there is a decimal point at the end of 25% just move that twice to the left and its .25

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3 years ago
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C opens up with a vertex at (-4,-1)

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