If the two lines 2x + y= 0 and y=3 are plotted on a typical xy coordinate grid, at which point will they intersect?Can someone point me in the direction of a vidoe to show how this is done

Gọi số tấm thảm xưởng dệt dệt theo dự định là x ( tấm, x >0 )

⇒ số tấm thảm xưởng dệt dệt trong 1 ngày theo dự định x/30 (tấm)

xưởng dệt dệt đc số tấm thảm trong thực tế là x/20 (tấm)

⇒số tấm thảm xưởng dệt dệt trong 1 ngày thực tế là x+20/25 (tấm)

Vì năng suất tăng 25% nên số tấm thảm dệt được trong 1 ngày thực tế sẽ bằng 125% số tấm thảm dệt đc trong 1 ngày theo dự định nên ta có PT : x+20/25=125% * x/30

me lười làm khúc dưới quá nên tự xử nha.

Answer:

12 quarts of the 90% pure apple juice should be used

Step-by-step explanation:

Here, we want to calculate the number of quarts of the 90% pure apple juice to be used.

Let the number of quarts of the 90% pure apple juice to be used be x;

This brings the total of the 85% result to (4 + x)

By mathematical convention;

4 quarts of 70% + x quarts of 90% = (4 + x) of 85%

70% = 70/100 = 0.7

90% = 90/100 = 0.9

85% = 85/100 = 0.85

Thus, mathematically;

(0.7 * 4) + (0.9 * x) = 0.85(4 + x)

2.8 + 0.9x = 3.4 + 0.85x

Let’s collect like terms

3.4 -2.8 = 0.9x -0.85x

0.6 = 0.05x

x = 0.6/0.05

x = 12

Final answer:

To get an 85% pure mixture, you need to combine 4 quarts of 70% pure apple juice with 4 quarts of 90% pure apple juice. This is obtained by setting and solving an algebraic equation based on percentage purity and volume.

Explanation:

This problem relates to an area of mathematics known as algebra. We are trying to find the amount of 90% pure apple juice needed to achieve an 85% pure mixture with a 4 quart bottle of 70% pure apple juice.

First, let's set up an equation based on the given information:

70%(amount of 70% pure apple juice) + 90%(amount of 90% pure apple juice) = 85%(total amount of apple juice mix)

Since the 70% pure apple juice is 4 quarts, the equation becomes:70%(4 quarts) + 90%(x) = 85%(4 quarts + x)

Next, we will solve for x. To do this, convert the percentages into decimals, multiply through, simplify and solve.

0.7(4) + 0.9x = 0.85(4+x)  

2.8 + 0.9x = 3.4 + 0.85x

Solving for x, we get that x = 4 quarts.

So, you would need 4 quarts of the 90% pure apple juice to get an 85% pure mixture with your 4 quart of 70% pure apple juice.

Learn more about algebra here:

brainly.com/question/32436021

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Answer:

Step-by-step explanation:

if do the math 46 divided by 4 is 11.50 so if you multiply 11.50 times 7 that will equal 80.50