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3 years ago

Solve............... the system

Mathematics

2 answers:

nadezda [96]3 years ago

7 0

5y=-25,
y=-5
correct answer (1,-5)

Masteriza [31]3 years ago

5 0

The answer is d
you can plug in the values into the system of you can use substitution

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10x + 4y = 24 6x +12y = 48 What is the value of y? * A. 7 B. 7/2 C. 1 D. -7/2

ziro4ka [17]

Answer:

Step-by-step explanation:

1) lets use elimination to solve this:

multiply 10x+4y=24 with 3 in order to get "4y" into "12y"

3(10x+4y=24)

30x+12y=72

now subtract both equations to eliminate 'y"

30x+12y=72

6x+12y=48

---------------------

24x=24

x=1

now substitute 1 in the above equation:

6(1)+12y=48

6+12y=48

12y=42

y=7/2

4 0

2 years ago

Please please please help me with this assignment :)

Shtirlitz [24]

Answer:

$45.63

Step-by-step explanation:

$50,145 cm^{3} * 2.6 g/cm^3 = 130,377 g\\130,377 g = 130.377 kg\\130.377 kg * $0.35/kg = $45.63\\$

or all together

50,145 cm³ * 2.6 g/cm³ * 0.35/kg = $45.63

6 0

2 years ago

If celia made 3 1/2 cups of rice. A serving is 2/3cup. How many servings of rice did she make?

nadezda [96]

Answer:

ima say around 5 and 1/4 cups

Step-by-step explanation:

3 1/2 divided by 2/3 cand be round to

3 3/6 divided by 4/6 to make it easier

6 0

2 years ago

Solving Exponential and Logarithmic Equations In Exercise, solve for x. 2 In x + In(x - 2) = 0

Pani-rosa [81]

Answer:

The value of x is about 2.206.

Step-by-step explanation:

Consider the given equation is

$2\ln x+\ln (x-2)=0$

We need to find the value of x.

Using the properties of logarithm we get

$\ln x^2+\ln (x-2)=0$ $[\because \ln a^b=b\ln a]$

$\ln (x^2(x-2))=0$ $[\because \ln (ab)=\ln a+\ln b]$

$\ln (x^2(x-2))=ln 1$ $[\because \ln 1=0]$

On comparing both sides we get

$x^2(x-2)=1$

$x^3-2x^2=1$

Using graphing calculator, the real solution of the above equation is

$x\approx 2.206$

Therefore, the value of x is about 2.206.

6 0

3 years ago

Lynn goes to the supermarket and purchases 6 boxes of cookies for $11.04. Each box contains 8 cookies. What is the price per coo

aksik [14]

Answer:

Step-by-step explanation:

6 x 8 = 48

11,04 x 6 = 66,24

66,24/48 = 1,38$

8 0

3 years ago