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sveta [45]
3 years ago
13

10 POINTS + BRAINIEST TO WHOEVER ANSWERS MY QUESTIONS FIRST (NO GUESSING PLEASE)

Mathematics
2 answers:
Tasya [4]3 years ago
7 0
I got B as my answer, (30+9)/2 * 8*4
zubka84 [21]3 years ago
7 0
B is the correct answer am I right or am I right
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Can anyone help with this probelm???
patriot [66]

We need to look at 2 similar triangles

1) big one: legs - a,b, and hypotenuse - c

2)small one: legs - h,s, and hypotenuse - b.


Corresponding sides:

hypotenuse - c and hypotenuse - b,

big leg - b and big leg - s,

small leg - a, and small leg h.


?(/b(big leg, big triangle)= b(hypotenuse, small triangle )/s (big leg, small triangle)


? should be hypotenuse of the big triangle, c.


Answer is second one c.

8 0
3 years ago
Find the critical numbers of the function. (Enter your answers as a comma-separated list. Use n to denote any arbitrary integer
AfilCa [17]

Answer:

\theta = \cos^{-1} (\pm \frac{1}{2} )

Step-by-step explanation:

The function is g(\theta) = 8\cdot \theta - 2\cdot \tan \theta, whose first derivative is:

g'(\theta) = 8 - 2\cdot \sec^{2}\theta

Let equalize the derivative to zero:

8 - 2\cdot \sec^{2}\theta=0

\sec^{2}\theta = 4

1 = 4\cdot \cos^{2}\theta

\cos \theta = \pm\sqrt {\frac{1}{4} }

\cos \theta = \pm \frac{1}{2}

The solutions are given by the following inverse trigonometric function:

\theta = \cos^{-1} (\pm \frac{1}{2} )

6 0
3 years ago
Work out the surface area of this cylinder radius 2cm and height 4cm pls help​
Alex

Step-by-step explanation:

surface area of cylinder is

2×pi×r (h+r)

2×22/7×2 (4+2)

88/7 (4+2)

75.4 cm square

6 0
3 years ago
What number divided by -4 equals -3?
worty [1.4K]
12 divided by -4 equals-3 .
7 0
3 years ago
Cleo wants to jion a gym. There is an initiation fee of $24.99, and each month of membership costs $12.50. If Cleo pays $174.99,
mamaluj [8]

Answer: The membership will last for 12 months.

Step-by-step explanation:

Let x represent the number of months that the membership would last.

Cleo wants to join a gym. There is an initiation fee of $24.99, and each month of membership costs $12.50. This means that the total cost of using the gym for x months would be expressed as

12.5x + 24.99

If Cleo pays $174.99, it means that

12.5x + 24.99 = 174.99

12.5x = 174.99 - 24.99

12.5x = 150

x = 150/12.5

x = 12

6 0
3 years ago
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