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Dafna1 [17]
3 years ago
11

(HELP ASAP HIGH POINTS) Which double-angle or half-angle identity would you use to verify the following:

Mathematics
1 answer:
Rashid [163]3 years ago
5 0

Answer:

B

Step-by-step explanation:

Using the trigonometric identities

• cscx = \frac{1}{sinx} and secx = \frac{1}{cosx}

Consider the left side

cscx sec x = \frac{1}{sinx} × \frac{1}{cosx} = \frac{1}{sinxcosx}

Consider the right side

2 csc2x = \frac{2}{sin2x} = \frac{2}{2sinxcosx} = \frac{1}{sinxcosx}

left side = right side hence identity is verified

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Lily and violet live 30 miles apart on a trail. They both start running towards each other with a plan to meet. Lily is moving a
erastovalidia [21]

Answer:

3 hours

Step-by-step explanation:

8 0
2 years ago
Given the speeds of each runner below, determine who runs the fastest.
uranmaximum [27]

Answer:

Liz

Step-by-step explanation:

lets make all speeds ft/1sec

Ron 8ft/1sec

Liz 104ft/7sec : 104/7=

14.8571428571 ft/1 sec

Katie

1 mile = 5280ft

5280ft/526sec

5280/526=

10.0380228137ft/1 sec

Emily,

1 min= 60 sec

835ft/60 sec

835/60=

13.9166666667 ft/sec

now, lets order from least to greatest

R:8ft/1sec, K:10.0380228137ft/1 sec,

E:13.9166666667 ft/sec, L:14.8571428571 ft/1 sec

Liz's speed is fastest

4 0
3 years ago
Laura drives a garbage truck that weighs 3 tons. She picked up 2 tons of recyclables. What is the total weight in pounds of the
Allushta [10]

Answer:

Step-by-step explanation:

Total weight=The garbage truck weight + recyclables weight =3 tons + 2 tons = 5 tons

3 0
3 years ago
Read 2 more answers
PLEASEEEEEEE HELP ME!!!
igor_vitrenko [27]

Answer:

125π km³

Step-by-step explanation:

We are to find the Volume of a cylinder

From the question:

Height of the cylinder = 5km

Radius of the cylinder = 5 km

The volume of a cylinder =

πr² h

Hence:

π × 5² × 5

= 125π km³

The volume of the cylinder = 125π km³

Option d is the correct option

8 0
3 years ago
Get the general term for the sequence being your t3 = 11 and the t20 = 244.2
marusya05 [52]

Answer:

nth term = t_{n} = 7.639(1.2)^{n - 1}

Step-by-step explanation:

Let us assume that the given sequence is a G.P.

Now, if the first term of the G.P. is a and the common ratio is r, then

Third term = t_{3} = ar^{2} = 11 .......... (1) and  

20th term = t_{20} = ar^{19} = 244.2 ........... (2)

Now, dividing equation (2) with equation (1) we get

\frac{ar^{19} }{ar^{2} } = \frac{244.2}{11} = 22.2

⇒ r^{17} = 22.2

⇒ r = 1.2.

Hence, from equation (1) we get

a(1.2)² = 11

⇒ a = 7.639 (Approx.)

Therefore, the general term of the sequence i.e. nth term = t_{n} = 7.639(1.2)^{n - 1} (Answer)

5 0
3 years ago
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