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djverab [1.8K]
3 years ago
14

If

Mathematics
1 answer:
OlgaM077 [116]3 years ago
5 0
If you reverse the first two letters
Na
Fe
Hg
Sn

They are actually symbols for elements
Na - Sodium
Fe - Iron
Hg - Mercury
Sn - Tin

Since Sn is a symbol for Tin and each pair of letters imply the starting letter of the element they are symbolizing, the answer is
1) T<span />
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A right-angled triangle has sides which are 5 inches and 12 inches. How long is the triangle's hypotenuse?
Andrew [12]

Answer:

13 inches

Step-by-step explanation:

Use the Pythagorean Theorem:

a^2 + b^2 = c^2

(5)^2 + (12)^2 = c^2

c^2 = 169 in^2

c = 13 inches

4 0
1 year ago
PLEASE SHOW WORK OR EXPLAIN
timofeeve [1]

Answer:

<h3>20.6 ft</h3>

Step-by-step explanation:

You must use the trigonometric function.

In this case, it will be tangent.

tangent=\dfrac{opposite}{adjacent}

We have

\theta=38^o,\ opposite=r,\ adjacent=20

\tan38^\approx0.7813

Substitute:

\tan38^o=\dfrac{r}{20}

\dfrac{r}{20}=0.7813              <em>multiply both sides by 20</em>

r=15.626

Tree height is r + 5.

Therefore

r+5=15.626+5=20.626\approx20.6\ ft

7 0
2 years ago
Every year, ___%percent of species are added to or subtracted from the total number of animal species.
nordsb [41]

Answer:

72

Step-by-step explanation:

4 0
2 years ago
Tell which number is greater 80%, 7/9
Kipish [7]

Answer:

80%

Step-by-step explanation:

7/9 = 77.777777777778%.

80% > 77.777777777778%

3 0
2 years ago
If f(x) = x2 – 2x and g(x) = 6x 4, for which value of x does (f g)(x) = 0? –4 –2 2 4
Natali [406]

The sum of function is a way of adding two or more functions together

The values of x for which f(g(x)) = 0 are -2/3 and -1/3

<h3>Sum of functions</h3>

The sum of function is a way of adding two or more functions together

Given the following functions

f(x) = x² - 2x

g(x) = 6x + 4

f(g(x) = f(6x +4))

f(6x+4) = (6x+4)² - 2(6x+4)
(6x+4)² - 2(6x+4) = 0
(6x+4) = 0 and 6x+4-2 = 0
x = -2/3 and -1/3

Hence the values of x for which f(g(x)) = 0 are -2/3 and -1/3

Learn more on functions here: brainly.com/question/2833285

#SPJ4

4 0
2 years ago
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