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Gre4nikov [31]
3 years ago
15

Help ppppppppppppllllllllllllllllsssssssss

Mathematics
2 answers:
valina [46]3 years ago
6 0

david's procedure is correct becsuse Keisha didnt put the correct value of sin theta in equation, she forgot to mention negative sign. though solution are same but in other case it could have gone wrong

taurus [48]3 years ago
6 0

Answer 1:

Option C - Both procedures are correct.

Step-by-step explanation:

As for Keisha's method of solving the question

  • Tan^2 Q + 1 = Sec^2Q
  • Sin^2 Q/ Cos^2 Q +1 = 1 / Cos^2 Q
  • (8/17)^2 / Cos^2 Q +  1 / Cos ^2 Q
  • Cos Q = +- Square root of 1 - 64/289
  • Cos Q = +- 15/17

Therefore, Keisha's procedure is correct

<h3>Answer 2: </h3>

Option C - Both procedures are correct.

Step-by-step explanation:

As for David's method of solving the question.

  • Sin^2 Q + Cos^2 Q = 1
  • Cos^2 Q = 1 - (-8/17)^2
  • Cos Q = +- Square Root of 225/289
  • Cos Q = +- 15/17

Therefore David's procedure is correct.

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Taryn and Alastair both mow lawns. Each charges a flat fee to mow a lawn. The table shows the number of lawns mowed in the past
Gennadij [26K]

Answer:

Taryn charges $12.50, Alastiar charges $17.50, Alastair earns more per hour

Step-by-step explanation:

Question:

  • Taryn and Alastair both mow lawns. Each charges a flat fee to mow a lawn. The table shows the number of lawns mowed in the past week, the time spent mowing lawns, and the money earned.

  • How much does Taryn charge to mow a lawn?
  • He charges $12.50.

  • How much does Alastair charge to mow a lawn?
  • He charges $17.50.

  • Who earns more per hour, Taryn or Alastair?
  • Alastair

7 0
3 years ago
Read 2 more answers
What is the Domain of the function shown on the graph
forsale [732]

Answer: Option A.

Step-by-step explanation:

For a function f(x) = y, the domain is the set of the possible values of x.

In the image we can see that the graph has two arrows, one pointing to the left and another pointing to the right, this means that the function extends infinitely to both sides.

Then there is no value of x that generates a given problem, then the domain is the set of all real numbers.

The set written in interval notation is:

-∞ < x < ∞

Then the correct option is A.

4 0
3 years ago
Diameter of a cone base is 5 cm and a slant height is 4M find surface area
Nutka1998 [239]

Hi there!

The total surface area (tsa) of a cone can be calculated with this formula :

TSA = (\pi × r × slant height) + \pi × r²


The "r" stands for "radius". The radius is equal to half the diameter, so in order to be able to use the formula, you'll need to divide the diameter by 2 to find the radius :

5 ÷ 2 = 2.5 = radius


Since the slang height is in meters, you'll need to transform it into centimeters in order to have both values in centimeters. To do so you'll need to use the cross product method :

1 m = 100 cm

4 m = x cm

(100 × 4) ÷ 1 = x cm

400 ÷ 1 = x cm

400 = x cm → The slant height is 400cm.


Now replace all the information in the formula and calculate everything :

TSA = (\pi × 2.5 × 400) + (\pi × 2.5²)

TSA = (\pi × 1,000) + (\pi × 6.25)

TSA ≅ 3,141.59 + 19.63

TSA ≅ 3,161.22 cm²


There you go! I really hope this helped, if there's anything just let me know! :)

4 0
3 years ago
Can anyone please help me
Agata [3.3K]
Answer B


Why is because Box B is near the 8 and goes on while Box A only is near 8 and stops there
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Hurry up please timed test
Mazyrski [523]

Answer:

the second option

hope this helps!

8 0
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