Can you help me with this question please

Mathematics

1 answer:

ArbitrLikvidat [17]2 years ago

8 0

Answer:

51 litres

Step-by-step explanation:

$\frac{1}{4}$ of 68 litres = $\frac{68}{4}$ = 17 litres

The tank holds 68 litres, thus

68 - 17 = 51 litres required to fill the tank

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X+3y=14<br> y=3x-14<br> Solving systems using substitution <br> How do i do this?

Free_Kalibri [48]

X + 3y = 14
x + 3(3x - 14) = 14
x + 9x - 42 = 14
10x - 42 = 14
<u>      + 42 + 42</u>
   <u>10x</u> = <u>56</u>
      10    10
   x = 5.6
5.6 + 3y = 14
<u>- 5.6    - 5.6</u>
   <u>3y</u> = <u>8.4</u>
      3    3
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6 0

3 years ago

Read 2 more answers

Brown rice costs $2 per pound, and beans cost $1.60 per pound. Lin has $10 to spend on these items to make a large meal of beans

Valentin [98]

Answer:

1. $2r+1.6b=10$

2. $r=5-0.8b$

3. $b=6.25-1.25r$

Step-by-step explanation:

<h3> The complete exercise is: "Brown rice costs $2 per pound, and beans cost $1.60 per pound. Lin has $10 to spend on these items to make a large meal of beans and rice for a potluck dinner. Let b be the number of pounds of beans Lin buys and r be the number of pounds of rice she buys when she spends all her money on this meal.</h3><h3>1. Write an equation relating the two variables.</h3><h3>2. Rearrange the equation so "b" is the independent variable.</h3><h3>3. Rearrange the equation so "r" is the independent variable."</h3><h3 />

1. According to the information exercise given in the exercise, the cost per pounds of brown rice is $2. Since "r" represents the number of pounds of rice Lin buys, the total cost of the brown rice she buys can be represented with this expression:

$2r$