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Cerrena [4.2K]
2 years ago
13

HELP HELP ASAP ASAP WILL MARK BRAINLIEST PLEASE EASY POINTS

Mathematics
2 answers:
katrin2010 [14]2 years ago
8 0

i think you are right maybe but this is helpful sorry!

alexandr402 [8]2 years ago
4 0

Answer:

Step-by-step explanation:

you need more information to be able to answer the question. Is there any other information they gave you?

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Which equation can be used to solve for the unknown number? Seven less than a number is thirteen.
zysi [14]

Answer:

n-7=13

Step-by-step explanation:

We need to find an equation that represents the expression: "Seven less than a number is thirteen".

It means that a number minus 7 equals 13. So, the correct option is: n-7=13

Bonus: Solving for 'n' we have that n=20.

So, Seven less than 20 equals 13!!

7 0
3 years ago
Read 2 more answers
Question in picture #21 only
krek1111 [17]
Number 21 is the first answer a.) 8
3 0
3 years ago
Read 2 more answers
Based on Pythagorean identities, which equation is true? A. Sin^2 theta -1= cos^2 theta B. Sec^2 theta-tan^2 theta= -1 C. -cos^2
Arturiano [62]

Answer:

D

Step-by-step explanation:

our basic Pythagorean identity is cos²(x) + sin²(x) = 1

we can derive the 2 other using the listed above.

1. (cos²(x) + sin²(x))/cos²(x) = 1/cos²(x)

1 + tan²(x) = sec²(x)

2.(cos²(x) + sin²(x))/sin²(x) = 1/sin²(x)

cot²(x) + 1 = csc²(x)

A. sin^2 theta -1= cos^2 theta

this is false

cos²(x) + sin²(x) = 1

isolating cos²(x)

cos²(x) = 1-sin²(x), not equal to sin²(x)-1

B. Sec^2 theta-tan^2 theta= -1

1 + tan²(x) = sec²(x)

sec²(x)-tan(x) = 1, not -1

false

C. -cos^2 theta-1= sin^2

cos²(x) + sin²(x) = 1

sin²(x) = 1-cos²(x), our 1 is positive not negative, so false

D. Cot^2 theta - csc^2 theta=-1

cot²(x) + 1 = csc²(x)

isolating 1

1 = csc²(x) - cot²(x)

multiplying both sides by -1

-1 = cot²(x) - csc²(x)

TRUE

3 0
3 years ago
Will give brainliest
Snezhnost [94]
I believe it's the first option. Hope this helps.
3 0
3 years ago
Read 2 more answers
Is 45 divisible by 4
IrinaK [193]

Answer:

No

Step-by-step explanation:

45 divided by 4 is 11 remaining 1.

If it were divisible, there would be no remainder.

8 0
3 years ago
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