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3 years ago

PLEASE HELP PLEASEEE THANKS!!

Mathematics

2 answers:

Kryger [21]3 years ago

7 0

Its A. hipe this helps

melisa1 [442]3 years ago

5 0

It’s B! Look up online graphing calculator and type in the equation and it will graph it for you and give you a table (:

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2X plus Y equals 7 <br> 3X minus 4Y equals five

Dvinal [7]

$\left \{ {{2x+y=7\ \ | *4} \atop {3x-4y=5}} \right. \\\\ \left \{ {{8x+4y=28} \atop {3x-4y=5}} \right. \\+----\\Addition\ method\\\\
11x=33\ \ \ | divide\ by\ 11\\
x=3\\\\y=7-2x\\
y=7-2*3=7-6=1\\\\Solution:\\ \left \{ {{y=1} \atop {x=3}} \right.$

7 0

3 years ago

Eight more than the product of 7 and julie’s savings use the variable j to represent julie’s savings

Romashka-Z-Leto [24]

7j+8

j will be used to justify julie's savings.

7 0

3 years ago

The dimensions of Rectangle A are 6 times the dimensions of Rectangle B. How do the areas of the Rectangles compare

Vedmedyk [2.9K]

The area of Rectangle A will always be 36 times the area of Rectangle B.

For example:
If Rectangle B has length 1 and width 2, Rectangle A will have length 6 and width 12. By multiplying, Rectangle A will have an area of 72 and B 2. Divide the two numbers and you will have 36.

Feel free to try with other numbers if you want to test it out.

3 0

4 years ago

A cleaning company uses 10 lbs each of chemicals A, B and C for each house it cleans. After some quality complaints, the company

umka21 [38]

Answer:

25%

Step-by-step explanation:

Let us first derive an equation for the productivity.

Given

No. of houses = 1 (Assumption)

Amount of Chemicals = 30 (10 x A, B, C)

Now the formula for productivity is as follow

Productivity % (P) = (Output/Input) * 100

Assuming the current productivity is 100%. We get the value for required output but using the value of 30 (Amount of Chemicals) as Input

$100 = \frac{x}{30}*100\\ x = 30$

Since we now know the value for desired output. We replace the value of input by 40, since 10 lbs of Chemicals have been increased per house.

$Productivity(P) = \frac{30}{40}*100\\ Productivity(P) = 75$

The new Productivity is 75%

There is a reduction of 25% in productivity

8 0

3 years ago

Please helppppp it’s due in 30 mins

ollegr [7]

Answer:A

Step-by-step explanation:

There is a pattern where every two days the previous log is multiplied by three. If you divide 3 by 2 you get 1.5 this is the increase per one day so just multiply day 6 by 1.5 to get the answer for day 7.

8 0

3 years ago