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2 years ago

Gasoline truck is carrying 189.271 L of gasoline what is the what is the

Mathematics

1 answer:

ch4aika [34]2 years ago

5 0

Answer:

100+80+9+0.2+0.07+0.001

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Use the fundamental identities and appropriate algebraic operations to simplify the following expression. (18 +tan x) (18-tan x)

andrezito [222]

Answer:

a) $\left(18+\tan \left(x\right)\right)\left(18-\tan \left(x\right)\right)+\sec ^2\left(x\right)=325$

b) The lowest point of $y=\cos \left(x\right)$ , $0\leq x\leq 2\pi$ is when x = $\pi$

Step-by-step explanation:

a) To simplify the expression $\left(18+\tan \left(x\right)\right)\left(18-\tan \left(x\right)\right)+\sec ^2\left(x\right)$ you must:

Apply Difference of Two Squares Formula: $\left(a+b\right)\left(a-b\right)=a^2-b^2$

$a=18,\:b=\tan \left(x\right)$

$\left(18+\tan \left(x\right)\right)\left(18-\tan \left(x\right)\right)=18^2-\tan ^2\left(x\right)=324-\tan ^2\left(x\right)$

$324-\tan ^2\left(x\right)+\sec ^2\left(x\right)$

Apply the Pythagorean Identity $1+\tan ^2\left(x\right)=\sec ^2\left(x\right)$

From the Pythagorean Identity, we know that $1=-\tan ^2\left(x\right)+\sec ^2\left(x\right)$

Therefore,

$324[-\tan ^2\left(x\right)+\sec ^2\left(x\right))]\\324[+1]\\325$

b) According with the below graph, the lowest point of $y=\cos \left(x\right)$ , $0\leq x\leq 2\pi$ is when x = $\pi$

3 0

3 years ago

17 times 14 times 123

LUCKY_DIMON [66]

Answer:

29274

Step-by-step explanation:

Because 17*14=238 and 238*123=29274

8 0

2 years ago

Read 2 more answers

carlos walked to school on 14 of the 20 school days in february.Witch value is equivalent to the fraction of the school days in

KIM [24]

Answer:

14/20 or simplified 7/10 it can also be shown as 70% or 0.7 or 0.70

Step-by-step explanation:

8 0

2 years ago

Eight less a number is less than or equal to 17

Karolina [17]

Step-by-step explanation:

n-8≤17

add 8 on both sides to isolate the variable.

n is less than or equal to 25

6 0

2 years ago

If a number is divisible by 3, then its odd

tatyana61 [14]

Answer:

and? obviously bc 3 isnt a even number so then the answer wont be even

4 0

2 years ago