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Lubov Fominskaja [6]
4 years ago
12

A drilling machine can drill 12 holes in 6 minutes. If the machine drills holes at a constant speed, it can drill ______ holes i

n 25 minutes. Numerical Answers Expected!
Mathematics
2 answers:
madreJ [45]4 years ago
6 0
12 holes in 6 minutes.....12/6 = 2 holes per minute

in 25 minutes...
25 * 2 = 50 holes in 25 minutes <==
Lerok [7]4 years ago
3 0
So it drills 2 holes per minute. 6x4=24. 12x4=48+2=50 

50 holes is your answer.
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A line passes through the origin and the point (3,5) what is the slope of the line?
Ivahew [28]
Slope = (5 - 0)/(3 - 0) = 5/3
8 0
4 years ago
Any help would be appreciated(brainly for best answer)
ziro4ka [17]

Answer:

80*

80*

75*

120*

Step-by-step explanation:

both angle 1 and 2 for the first image have the same value as  the other angle of 80* because it is a set of parallel lines and one line going through it.

1 on the next set of images is 75* because is is an alternate exterior angle.

2 of the last set of images is 120* because it is same side interior angles.

5 0
3 years ago
2tan(45-A)/1+tan^2(45-A)=cos2a
AVprozaik [17]

Answer:

Let θ = (45 - A)°.

=> 2Tanθ/ 1 + Tan²θ

=> 2Sinθ/Cosθ / 1 + Sin²θ / Cos²θ

=> 2Sinθ/Cosθ/ Cos²θ + Cos²θ / Cos²θ

=> 2Sinθ/Cosθ/ 1 / Cos²θ

=> 2SinθCos²θ/Cosθ

=> 2SinθCosθ  

=> Sin2θ

But we assumed θ = (45 - A)°,

=> Sin2(45 - A)

=> Sin(90  - 2A)  (∵ Sin(90 - θ) = Cosθ)

=> Cos2A

= R.H.S

Hence proved.

Step-by-step explanation:

3 0
3 years ago
There are 12 pieces of fruit in a bowl five are lemons and the rest are limes. You choose a piece of fruit without looking. The
Sati [7]

I agree. So like what you already said, there's 5 out of 12 chance that you will get lemon. And 7 out of 12 chances, you will get lime.

Ratio Format:

5:12 chances for lemon

7:12 chances for lime

5 0
3 years ago
What sentence represents the number of test questions in the problem below? A test is worth 80 points. Multiple-choice questions
almond37 [142]
The first thing we must do for this case is to define variables.
 We have then:
 x = Multiple-choice questions
 y = short-answer questions
 We write the following system of equations:
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 Solving the system of equations we have:
 x = 10
 y = 15
 Answer:
 
there are 10 multiple-choice questions
5 0
4 years ago
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