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2 years ago

Would a triangle with these side lengths be a right triangle? 7, 14, 16

1 answer:

3 0

Answer: I would say no but I could be wrong but I can say a right triangle =90° tell me if you want a better explanation

Step-by-step explanation:

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Two angle measures in a scalene triangle are 38° and 25°. What is the measure of the third angle?

NISA [10]

117, just add the two and subtract from 180

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3 years ago

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BRAINLIEST!!! +15 POINTS!!! REAL ANSWERS ONLY!!!

brilliants [131]

Answer:

x= 10,-2 (so basically x=10)

Step-by-step explanation:

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2 years ago

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WHO DOESN'T LOVE MAX POINTS. MAX POINT QUESTION PLS ANSWER THIS TRIGONOMETRY QUESTION

mezya [45]

Answer:

Solution given:

opposite:9

adjacent: 12

$\theta=?$

Relationship between opposite and adjacent is given by tan angle

$Tan \theta=\frac{opposite} {adjacent}=\frac{9}{12}$

$Tan \theta=\frac{3}{4}$

$\theta=Tan^{-1}\frac{3}{4}$

$\bold{\theta=36.8°}$

#11.

hypotenuse[h]=11cm

opposite/perpendicular[P]=b cm

adjacent/base[b]=a cm

now

$\theta=62°$

Relationship between height and hypotenuse is given by Sin angle

Sin 62°= $\frac{opposite}{hypotenuse}=\frac{b}{11}$

doing crisscrossed multiplication

b=Sin 62°*11

:.b=9.71 cm

a) At 9.71 cm height does the ladder touch the building.

again

Relationship between base and hypotenuse is given by Cos angle

:.Cos 62°= $\frac{base}{hypotenuse}=\frac{a}{11}$

doing crisscrossed multiplication

a=Cos 62°×11

a=5.16cm

b) the distance between the foot of the ladder and the building is 5.16cm.

4 0

2 years ago

The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).

lesantik [10]

Answer:

(a).

$S_{n} = \frac{n}{2} (4n + 20) \\ \\S _{n - 1} = \frac{(n - 1)}{2} (4n - 4 + 20) \\ \\ S _{n - 1} = \frac{(n - 1)}{2} (4n + 16) \\ \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2} \\ \\ { \boxed{S _{n - 1} = {2 {n}^{2} + 6n - 8}}} \\$

(b).

from general equation:

$S _{n - 1} = \frac{(n - 1)}{2} (4n + 16)$

first term is 4n

common difference:

$16 = \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d = \frac{16}{n - 2}$

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2 years ago

alisia goes to the gym every 3 days Luis goes to the gym every 4 days they both are at on the 12th day what is the next day they

jenyasd209 [6]

24th is the answer, you just double the 12 because it’s both a number 3 and 4 go into

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3 years ago

Would a triangle with these side lengths be a right triangle? 7, 14, 16​

Would a triangle with these side lengths be a right triangle? 7, 14, 16