45 POINTS! PLEASE HELPPPPPPPPPPPPPP!

Mathematics

1 answer:

VMariaS [17]3 years ago

7 0

Answer:

This is a direct variation where the constant of variation is 5/9

Step-by-step explanation:

The equation for direct variation is y = kx

5x-9y =0

Lets try to get this equation in the above form

Add 9y to each side

5x-9y +9y = 9y

5x = 9y

Divide each side by 9

5/9 x = 9y/9

5/9x = y

This is in the form y = k x where k =5/9

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Last year, Felipe invested his money in two purchases. He purchased a certificate of deposit for $12,000 that paid 6% interest p

Alexus [3.1K]

Same as the other one

part A)

CD 12,000 at 6%, how much is that? (6/100) * 12000

CB 4000 at 5%, how much is that? (5/100) * 4000

part B)

total investment was 12000 + 4000 = 16000

the earned interest above are 720 and 200 respectively

total yield was, 720 + 200 = 920

if 16000 is the 100%, how much is 920 in percentage?

$\bf \begin{array}{ccllll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
16000&100\\
920&x
\end{array}\implies \cfrac{16000}{920}=\cfrac{100}{x}$

solve for "x"

8 0

2 years ago

Pls help me plssssssssssss

natka813 [3]

Answer:

Step-by-step explanation:

the aswer is d

8 0

3 years ago

Help i,m suck and i cant find the answer

Anestetic [448]

The answer is 2x
3
+5x
2
−x−6