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Ivenika [448]
3 years ago
12

Please I am taking a test I need help asap

Mathematics
1 answer:
blagie [28]3 years ago
5 0

Answer: The Speed of The Ball (I think....)

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Find the distance between the two points (2, -9) and (-1, 4) round to the nearest tenth .
QveST [7]

Answer:

13.3 units (nearest tenth)

Step-by-step explanation:

\boxed{Distance \: between \: 2 \: points =  \sqrt{ {(x1 - x2)}^{2} +  {(y1 - y2)}^{2}  } }

Using the formula above, distance

=  \sqrt{ {[2 - ( - 1)]}^{2}  + ( - 9 - 4)^{2} }

=  \sqrt{ {(2 + 1)}^{2} + ( - 13) {}^{2}  }

= \sqrt{ {3}^{2} + ( - 13) {}^{2}  }

=  \sqrt{9 + 169}

=  \sqrt{178}

= 13.3 units (nearest tenth)

7 0
3 years ago
An electric car makes 3,000 revolutions per minute, How many degrees does it rotate in a second?
ruslelena [56]

Answer:

It rotates 50 times a second

Step-by-step explanation:

There is 60 seconds in a minute,so all you have to do is Divide 30,000 by 60 and you get 50!

3 0
3 years ago
4.A store pays $85 for a table. The markup is 90%. What is the selling price?
allochka39001 [22]

Answer:

$161.50

Step-by-step explanation:

the revenue for an item of $85 with a 90% markup is $161.50

3 0
3 years ago
Is (5, 8) a solution to this system of inequalities?<br><br> x + y ≤ 18<br> x ≥ 6
Alecsey [184]

Answer:

No

Step-by-step explanation:

x + y ≤ 18

x ≥ 6

(5,8)

The second inequality states that x must be greater than or equal to 6, but x =5 so it is not a solution

5 0
3 years ago
The diagonal in a rectangle is 20 units long, and the angle between the diagonal and a side is 36º 42'.
mylen [45]
Side adjacent to the given angle: x
Diagonal=hypotenuse=20
cos (36° 42') =(side adjacent to angle 36° 42')/Hypotenuse
cos (36° 42')=x/20
Solving for x. Multiplying both sides of the equation by 20:
20 cos (36° 42')=20 (x/20)
20 cos (36° 42')=x
x=20 cos (36° 42')
x=20 (0.801775644)
x=16.03551288
x=16.04

Answer: Option D. 16.04
3 0
3 years ago
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