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Effectus [21]
3 years ago
14

Tan2 x + sec2x= 1 for all values of x true or false

Mathematics
2 answers:
NeX [460]3 years ago
8 0
It’s false. You cannot prove it because it is not an identity
Rama09 [41]3 years ago
5 0

Answer:

true

Step-by-step explanation:

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A 12 cm by 20 cm painting hangs in a museum. The museum curator wants to hang other paintings in the gallery that are proportion
nata0808 [166]

Answer:

A. 1.5 cm by 2.5 cm

B. 27 cm by 45 cm

C. 9 cm by 15 cm

D. 30 cm by 50 cm

Step-by-step explanation:

The dimensions of the original painting = 12 cm by 20 cm painting

Hence, the proportion is:

12/20 = 0.6

Hence, we compare the options given in the question.

A. 1.5 cm by 2.5 cm

= 1.5/2.5 = 0.6 , option A is correct

B. 27 cm by 45 cm

27cm/45 cm = 0.6 Option B is correct

C. 9 cm by 15 cm

9cm/15cm = 0.6 , Option C is correct

D. 30 cm by 50 cm

30 cm /50 cm = 0.6 Option D is correct

E. 6 cm by 14 cm

6cm/14 cm = 0.4285714286

Option E is not correct

Therefore, Options A to D are the correct options

6 0
3 years ago
Can someone help me with real numbers
Ierofanga [76]

Answer:

Answer is on the pic

Explanation:

I hope it's helpful!

7 0
3 years ago
Need help on this please!
omeli [17]

Answer:

c

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which ordered pair is a solution to the system of linear equations Negative 4 x + y = 8 and x minus 5 y = 17? (–4, –3) (–4, 3) (
Salsk061 [2.6K]

Answer:

(–3, –4)

Step-by-step explanation:

Given pair of linear equation

-4x+y = 8    

=> y = 8 + 4x _____(1)

x - 5y = 17  (2)

substituting value of y from equation 1 in equation 2 we have

x - 5(8 + 4x) = 17

=> x - 5*8 -5*4x = 17

=> x - 40 - 20x = 17

=> -40 - 19x = 17

=> -19x = 17+40 = 57

=> x = 57/-19 = -3

Thus, x = -3

y = 8 + 4x = 8 +4(-3) = 8 -12 = -4

Thus, y = -4

Hence, paired solution for given equation is (–3, –4).

5 0
3 years ago
Read 2 more answers
Whats 16 = k/11<br>and v/8=2
Dvinal [7]
16= \frac{k}{11} &#10;\\16*11=k&#10;\\k=176&#10;&#10;

\frac{v}{8} =2&#10;\\v=8*2&#10;\\v=16
6 0
3 years ago
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