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3 years ago

Help find the surface area pls ill give u brainliest

Mathematics

1 answer:

Schach [20]3 years ago

8 0

Answer: 680 cm^2

Step-by-step explanation:

The center inscribed triangle is congruent to the three other triangle it forms.

Since they are congruent, they share the same height value: 17.

The total height of the big triangle is twice the height of 2 smaller ones, so 34.

A=bh/2, 40*34/2= 680

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Please answer the following

natulia [17]

Answer:

cot∅ = (-2√30)/7.

Step-by-step explanation:

Given the value of csc∅ = -13/7 and ∅ is in quad III.

We know y = r sin∅ and r > 0. So csc∅ = r/y = -13/7 = 13/(-7).

It means y = -7, r = 13.

We know x² + y² = r².

x² = r² - y²

x² = (13)² - (-7)² = 169 - 49 = 120.

x = √120 = 2√30.

we know cot∅ = x/y = (2√30)/(-7) = (-2√30)/7.

Hence, cot∅ = (-2√30)/7.

4 0

4 years ago

True or false: is ST parallel to PR? (photo above)

Deffense [45]

Answer:

true

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Determine the amplitude (A), period (P), and phase shift (PS) of the function f(x)= 3sin(x-4)+9

Tpy6a [65]

ANSWER

D.
$A=3,P=2\pi,PS=(4,9)$

EXPLANATION

The given function is

$f(x) = 3 \sin(x - 4) + 9$

Comparing to the general form of a trigonometric sine function,

$f(x) = A \sin(Bx-C)+D$

$A=3$
The amplitude is absolute value of A

$|A| = |3| = 3$

$B=1$

The period is given by

$p = \frac{2\pi}{ B}$

$p = \frac{2\pi}{ 1} = 2\pi$

$C=4$

is a shift to the right of 4 units.

and

$D=9$

is an upward shift of 9 units

Therefore the phase shift is (4,9).

The correct answer is D

6 0

3 years ago

If I get 2 answers will vote one brainliest! please help!

weqwewe [10]

Answer:

Step-by-step explanation:

The answer is 28 because this triangle will add up to 180 degrees and 79 + 73 = 152 and

180 - 152 = 28 so 28 is our missing angle!

Hope this helps you!

7 0

3 years ago

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Does the number -2.675 belong to the set of integers

tankabanditka [31]

Answer:

yes

Step-by-step explanation:

4 0

3 years ago