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3 years ago

Translate the following into an expression: 40% off the price of r dollars 40(0)

Mathematics

1 answer:

Darina [25.2K]3 years ago

8 0

Answer:

0.4r

Step-by-step explanation:

40% of the price of r dollars

To translate into an expression, we outline te keywords

Percentage of price = 40%

The price in question = $r

Hence, the expression will calculate, 40% of the price

Hence, we'll have :

40% of price

(40 / 100) * r

0.4 * r

= 0.4r

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Work out the value of z, given that x+y=42 and x/13=y/8=z/9.

Andru [333]

Answer:

z = 18

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Step-by-step explanation:

Given:

$x + y = 42$

$\dfrac{x}{13}=\dfrac{y}{8}=\dfrac{z}{9}$

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$\implies y=42-x$

Substitute this into $\dfrac{x}{13}=\dfrac{y}{8}$ :

$\implies \dfrac{x}{13}=\dfrac{42-x}{8}$

Cross multiply:

$\implies 8x=13(42-x)$

$\implies 8x=546-13x$

$\implies 21x=546$

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Substitute found value of x into $x + y = 42$ and solve for y:

$\implies 26 + y = 42$

$\implies y=16$

Substitute found value of y into $\dfrac{y}{8}=\dfrac{z}{9}$ and solve for z:

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2 years ago

I need help please help

saveliy_v [14]

Answer:(0,6)

Step-by-step explanation:

Solve for Y if X =0

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3 years ago

Luther owns a farm where he grows red and green tomatoes. He sells both types of tomatoes for $1.70 per pound. One customer boug

pashok25 [27]

Answer:

Total revenue= $32.13

Step-by-step explanation:

Giving the following information:

He sells both types of tomatoes for $1.70 per pound. One customer bought 10.6 pounds of red tomatoes and 8.3 pounds of green tomatoes.

<u>We need to calculate the total revenue:</u>

Total revenue= 1.7*10.6 + 1.7*8.3

Total revenue= $32.13

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3 years ago

Translate the following into an expression: 40% off the price of r dollars 40(0)​

Translate the following into an expression: 40% off the price of r dollars 40(0)