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4 years ago

Enter an inequality that represents the description, and then solve.

Mathematics

1 answer:

ryzh [129]4 years ago

5 0

Answer:

You probably don't need the answer still but here's it anyways- $1.50

Step-by-step explanation:

12 - 9 = 3

3 divided by 2 = 1.5

$1.50

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Please someone help me...

Savatey [412]

use $a^2-b^2=(a+b)(a-b)$

to get $(\cos^3A-\sin^3A)(\cos^3A+\sin^3A)$

then use $a^3+b^3=(a+b)(a^2+b^2-ab)$

and $a^3-b^3=(a-b)(a^2+b^2+ab)$

also, $\sin^2\theta+\cos^2\theta=1$

to get $(\cos A-\sin A)(1+\sin A\cos A)(\cos A+ \sin A)(1-\sin A\cos A)$

then again use the first identity In both pairs, i.e.

$(\cos A-\sin A)(\cos A+ \sin A) \cdot (1+\sin A\cos A)(1-\sin A\cos A)$

to get $\cos 2A (1-\sin^2A\cos^2A)$

multiply and divide by 4 to get the RHS.

because, $\sin(2A)= 2\sin A \cos A$

squaring both sides, $\sin^2 (2A)=4\sin^2A\cos^2A$

3 0

3 years ago

Read 2 more answers

ELPP PLS I SUCK AT MATHH D:

Korvikt [17]

Answer:

If you were really that bad at math make it more than 6+ points lmoa and the answer is 1

Step-by-step explanation:

7 0

3 years ago

A-2=-1 + 2a-4-1 send me the work please! (solving equations with variables on both sides)

Vladimir [108]

The value of "a" is 4

Solution:

Given expression is:

$a - 2 = -1 + 2a - 4-1$

The above expression involves variables and constants

A variable is a symbol that represents an unknown number

Here the variable is "a"

Constants are fixed numbers like 1, 2 etc

From given expression:

$a - 2 = -1 + 2a - 4-1$

Move the varibale "2a" from right side to left side of equation

When, 2a is moved from R.H.S to L.H.S, it becomes -2a

$a -2a - 2 = -1 -4-1$

Now move the constant -2 from left side to right side of equation

Similarly, when -2 is moved from L.H.S to R.H.S, it becomes +2

$a-2a = -1-4-1+2$

Now add the variables on left side of equation

$-a = -1-4-1+2$

Now add the constants on right side of equation

$-a = -6+2\\\\-a = -4$

Cancel the negative sign on both sides of equation

$a=4$

Thus the value of "a" is 4

6 0

3 years ago

A customer at a Mexican diner placed an order for 3 burrito bowls which were priced at $x each. He also ordered a plate of corn

Shtirlitz [24]

Answer: $6.50

Step-by-step explanation: Well we know that all the burrito bowls are for the same price. We also know that he spent $12.96 for corn tacos and had to pay a total of $32.46. So first we subtract 32.46 - 12.96 to find out how much he paid for the burritos alone. 32.46 - 12.96= 19.50 which means he spent $19.50 for all of the burritos. And since each burrito cost the same amount and there are 3 burritos, you have to divide $19.50 by 3 which gives you $6.50.

3 0

3 years ago

Are the following triangles similar? Justify your answer.

Readme [11.4K]

if the triangles are indeed similar, then their corresponding sides will yield the same proportion or ratio, let's check, △MDC has 3 sides, a small one a medium and a large, same is true for △LON, so let's use hmmm say the small side of each and the medium side of each, to see if their ratio matches. Check the picture below.

6 0

3 years ago