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3 years ago

Evaluate the expression xy-3x; when x=4 and y=5. Pls provide explanation. Will choose brainliest.

Mathematics

1 answer:

Iteru [2.4K]3 years ago

7 0

4*5-3*4

20-12

Just plug in the numbers and solve. Remember that you multiply before you subtract.

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Do all graphs of proportional relationships include the point (0, 0)? Explain.

Sunny_sXe [5.5K]

No. For example, if I gave you the equation y= 3x+5, the y-intercept will be at (0,5), eliminating the (0,0).

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3 years ago

A mixture of chlorine and water contains a total of 60 gallons. There are 30 gallons of pure Chlorine in the mixture. (I) what p

ser-zykov [4K]

60 gallons of the whole thing, chlorine and water mixed.

one may note that 30 is half of 60, namely 50% of 60.

if there are 30 gallons of chlorine, 60 - 30, the leftover is 30 gallons, and that must be water.

so 50% is chlorine, and the other 50% is water.

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3 years ago

HELP URGENT PLEASSSSSSSSSSSSSSEEEEEEEEEEEEEEEE

mart [117]

Answer:

1 4/5 pounds each

Step-by-step explanation:

9/5 = 1 4/5

4 0

3 years ago

3. Formulate 900 lbs of a 35% CP ration using Soybean Meal (46% CP) and Oats (12% CP). How many pounds of soybean meal will be u

Anarel [89]

Answer:

The amount of Soyabean = 608.82 pounds.

The amount of Oats = 900-608.82 = 291.18 pounds.

Step-by-step explanation:

Given that the Soybean Meal has 46% CP and Oats has 12% CP.

The total amount of ration is 900 lbs of 35% CP.

Let x pounds of Soyabean has been used, so,

the amount of Oats = 900-x lbs.

The CP amount in 900 lbs mixture will be equal to the sum of CP amounts in x lbs Soyabean and 900-x lbs Oats, i.e

35% of 900 = 46% of x + 12% of (900-x)

$\Rightarrow \frac{35}{100}\times 900=\frac{46}{100}\times x+\frac{12}{100}\times (900-x)$

$\Rightarrow 35\times 900 = 46x + 12\times 900 - 12 x$

$\Rightarrow 34x= 900(35-12)$

$\Rightarrow x = (900\times 23)/34$

$\Rightarrow x = 608.82$ lbs.

So, the amount of Soyabean = 608.82 pounds.

The amount of Oats = 900-608.82 = 291.18 pounds.

5 0

2 years ago

Each set of ordered pairs represent a function. writ a rule that represents the function. can you help? (0,1) (1,3) (2,9) (3,27)

Hoochie [10]

X1-x2/y1-y2 is what you need for ordered pair

3 0

3 years ago