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3 years ago

The linear combination method is applied to a system of equations as shown.

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

5 0

Answer:

(9,3)

Step-by-step explanation:

4(.25x + .5y = 3.75) → x + 2y = 15

(4x – 8y = 12) → x – 2y = 3

2x = 18

Divide both sides by 2

x = 9

Substitute x = 9 into x + 2y = 15

9 + 2y = 15

Subtract 9 from both sides

2y = 6

Divide both sides by 2

y = 3

Solution

(9, 3)

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Help!!!!!!!!!!!!!!!!

Free_Kalibri [48]

Answer:

The solutions the equation 1 are -1.3 and 2. The solutions to equation 2 are -1 and 0.

Step-by-step explanation:

Isolate the absolute value for equation 1. Then, set two equations equal to 5 and -5.

3x - 1 = 5 and 3x - 1 = -5

Solve for x in both and you would get -1.3 and 2.

Do the same for equation 2.

2x + 1 = -1 and 2x + 1 = 1

Solve for x and you would get -1 and 0.

6 0

3 years ago

I must convert a percent into a fraction,the percent is 93%. a.k.a <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B93%7D%7B100%7D

gtnhenbr [62]

First, you put 93 over 100.
Then, you simplify the fraction. But it is in simplified form.
Answer is 93/100.

6 0

3 years ago

A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a single-strand electric f

likoan [24]

Step-by-step explanation:

Let x be the length and y be the width of the rectangular plot.

The plot is bounded on one side by a river and on the other three sides by a single-strand electric fence. It means,

x+2y = 1500

x = 1500 - 2y ....(1)

We know that the area of a rectangular plot is given by :

A = xy ....(2)

Put the value of x from equation (1) in (2)

$A=(1500-2y)y\\\\A=1500y-2y^2$ .....(3)

For largest area, differentiate above area equation wrt y.

$\dfrac{dA}{dy}=\dfrac{d}{dy}(1500y-2y^2)\\\\=1500-4y\\\\\text{Put}\ \dfrac{dA}{dy}=0\\\\1500-4y=0\\\\y=\dfrac{1500}{4}\\\\=375$

Put the value of y in equation (1).

x = 1500-2(375)

= 750 m

Put the value of y in equation (3).

$A =1500(375)-2(375)^2\\A=281250\ m^2$

Hence, the largest area is 281250 m² and its dimensions are 750 m and 375 m.

3 0

3 years ago

For the second problem do I add, divide, subtract or multiplied

MA_775_DIABLO [31]

Divide hope it helps

8 0

3 years ago

Read 2 more answers

there are 33.8 fluid ounces in a filter or in a liter there are 128 fluid ounces in a gallon about how many liters are in a gall

cluponka [151]

Answer:

33.8 + 128 = 161.8

6 0

3 years ago