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2 years ago

The sum of Jahiem and his sister's age is 21. If Jahiem is 7 years older than his

Mathematics

1 answer:

Effectus [21]2 years ago

6 0

Step-by-step explanation:

I think it is meant to use "j" for Jahiem's age.

so,

j + s = 21

j = s + 7

=> s + s + 7 = 21

=> 2s + 7 = 21

=> 2s = 14

=> s = 7

=> j = s + 7 = 7 + 7 = 14

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Decide if each expression is equivalent to 2^6 or 4^4

Mandarinka [93]

Answer:

Step-by-step explanation:

2^6=64

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2 years ago

Can someone help me with these questions, don’t mind the answers written already

Rina8888 [55]

Answer:

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Step-by-step explanation:

yes you do quadratic formula and such :)

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1 year ago

Simplify the expression cos x cot x+ sin x please select the best answer from the choices provided a.0, b.csc x, c. Tan x, d sec

expeople1 [14]

Answer:

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And then the best option for this case would be:

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Step-by-step explanation:

For this case we have the following expression given:

$cos x cot x + sin x$

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If we use this definition we got:

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Now we can use the following identity:

$sin^2 x + cos^2 x =1$

Solving for $cos^2 x$ we got $cos^2 x =1 -sin^2 x$ and replacing this we got:

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3 years ago

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nadezda [96]

Answer:

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Step-by-step explanation:

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3 years ago

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sertanlavr [38]

Step-by-step explanation:

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3 years ago