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3 years ago

8

Please can anyone still help me with the correct answer.

1 answer:

Anvisha [2.4K]3 years ago

8 0

Answer:

Hypoteneuse (y) = b /cos(α)

= 4.24264 = 3√2

Height (x) = √c2 - b2

= √4.24264068711932 - 3^2

= √9

= 3

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2 to the 3rd power divided by 2 to the 6th power

marissa [1.9K]

1/8 is the answer you’re welcome

5 0

3 years ago

1/3 x− 1/8 y=3 <br> 7y+9x=−2<br> please solve the system <br> 45 points for who does

photoshop1234 [79]

Answer:

$x=6\\y=-8$

Step-by-step explanation:

$\frac{1}{3}x-\frac{1}{8}y=3\\ 7y+9x=-2$

One method could be rewriting the second equation as x in terms of y and solving by replacing in the first equation.

$7y+9x=-2\\9x=-2-7y\\x=\frac{-7y-2}{9}$

Replace...

$\frac{1}{3}x-\frac{1}{8}y=3$

$\frac{1}{3}(\frac{-7y-2}{9})-\frac{1}{8}y=3$

$\frac{-7y-2}{27}-\frac{1}{8}y=3$

$-\frac{7}{27}y-\frac{2}{27}-\frac{1}{8}y=3$

add $\frac{2}{27}$ on both sides.

$-\frac{7}{27}y-\frac{1}{8}y=3+\frac{2}{27}$

Combine like terms

$\frac{(-7)(8)-(1)(27)}{(27)(8)} y=\frac{(3)(27)+2}{27}$

$\frac{-56-27}{216} y=\frac{81+2}{27}$

$\frac{-83}{216}y =\frac{83}{27}$

Now, to get rid of the fraction and isolate y, multiply by the reciprocal or the inverted fraction.

$(\frac{216}{-83}) \frac{-83}{216}y =\frac{83}{27}(\frac{216}{-83})$

$y=\frac{216}{-27}$

Simplify

$y=-8$

Now replace the value of y in either equation to find x.

$7y+9x=-2\\7(-8)+9x=-2\\-56+9x=-2$

add 56

$56-56+9x=-2+56\\9x=54\\$

Divide by 9

$\frac{9x}{9}=\frac{54}{9}\\ x=6$

To check whether these values are accurate, replace in either equation both values and you should have an equality. In this case I'll do it in both equations.

$\frac{1}{3}x-\frac{1}{8}y=3$

$\frac{1}{3}(6)-\frac{1}{8}(-8)=3$

$2-(-1)=3\\2+1=3\\3=3$

-----------------------------------------------------------------

$7y+9x=-2\\7(-8)+9(6)=-2\\-56+54=-2\\-2=-2$

7 0

3 years ago

How much would $500 invested at 6% interest compounded annually be worth after 4 years

mixas84 [53]

A = P(1 + r)^t
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4 0

4 years ago

Read 2 more answers

dybincka [34]

Answer:

There is a common ratio of 1/4.

The next 3 numbers are -80, -20 , -5.

Step-by-step explanation:

The next term is found by multiplying by 1/4. ( -5120 / 20480 = 1/4).

So the next 3 terms are -320 * 1/4 = -80,

-80 * 1/4 = -20 and the last is -5.

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3 years ago

7. Given the systems below, state how many solutions there are. YOU MUST GIVE A<br> REASON

Dmitry [639]

In a there will be 1 solution as 7x and 5x + 2 is the same and in b there will be 2 solutions as they both are 2 different questions hope this helped

6 0

3 years ago