2 years ago

Math swatch pls help

Mathematics

1 answer:

solniwko [45]2 years ago

4 0

Answer:

The answer is 11.9cm

Step-by-step explanation:

The solution is in the image

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Megan bought 3 pounds of apples that cost x dollars per pound. She gave the cashier a 20-dollar bill.

sergiy2304 [10]

Answer:

3x-20

Step-by-step explanation:

I had this test yesterday and this was the correct answer

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3 years ago

EASY MATH PLEASE HELP! NO LINKS! NEED COMPLETE EXPLAINATION WITH ANSWER!!

Vinvika [58]

Answer: a.) 18 x 8

Step-by-step explanation: if you break down the equation 6^3= 18 and 4^2=8 then take 18x8 simple as that

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3 years ago

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umka21 [38]

Answer:

5/10 or 2.5/5

Step-by-step explanation:

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3 years ago

Simply (tan^2 x - sec^2 x)(sin^2 x + cos^2 x)

kati45 [8]

we can use pythagorean identieis

remember that $sin^2(x)+cos^2(x)=1$

also remember that $tan(x)=\frac{sin(x)}{cos{x}}$ and $sec(x)=\frac{1}{cos(x)}$

so if we take $sin^2(x)+cos^2(x)=1$ and divide both sides by $cos^2(x)$ we get

$\frac{sin^2(x)}{cos^2(x)}+\frac{cos^2(x)}{cos^2(x)}=\frac{1}{cos^2(x)}$

$(\frac{sin(x)}{cos(x)})^2+1=(\frac{1}{cos(x)})^2$

$tan^2(x)+1=sec^2(x)$

subtracting $1+sec^2(x)$ from both sides

$tan^2(x)-sec^2(x)=-1$

now subsitute into original problem

$\frac{tan^2(x)-sec^2(x)}{sin^2(x)+cos^2(x)}=$

$\frac{-1}{1}=$

$-1$

the answer is -1

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3 years ago

PLEASE HELP AS SOON AS POSSIBLE

Stolb23 [73]

Answer:

[2], [5], [8],

Step-by-step explanation:

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3 years ago