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Solnce55 [7]
3 years ago
9

4x – 9y = 7 –2x 3y = 4 what number would you multiply the second equation by in order to eliminate the x-terms when adding to th

e first equation? what number would you multiply the second equation by in order to eliminate the y-terms when adding to the first equation?
Mathematics
2 answers:
steposvetlana [31]3 years ago
8 0
Multiply equation II by 2 and then add up the equations.
Alchen [17]3 years ago
7 0

Answer:

What number would you multiply the second equation by in order to eliminate the x-terms when adding to the first equation? answer 2

What number would you multiply the second equation by in order to eliminate the y-terms when adding to the first equation? answer 3

Step-by-step explanation:

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The new coordinates of U are (-2,-2)
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What is 2+9 you tell me
I am Lyosha [343]

Answer:

11

Step-by-step explanation:

6 0
3 years ago
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question 2 57.55 in base 10 equals in base 2? (provide exactly 6 binary digits to the right of the decimal)
erastovalidia [21]

57.55 in base 10 equal in base 2 is 57.55₁₀ = 111001.10001100110₂

Base 10:

It refers the decimal number system.

A number system which uses digits from 0 to 9 to represent a number.

Base 2:

It refers the Binary number system.

A binary number is defined as a number that is expressed in the binary system or base 2 numeral system. It describes numeric values by two separate symbols; 1 (one) and 0 (zero).

Given,

The base 10 number = 57.55

Now we have to convert it into base 2,

So, the conversion will follow the following step in image 1.

Write the Remainders from bottom to top

So, 57₁₀=111001₂

For Decimal Numbers

Refer image 2,

Write the Integer part from top to bottom

55₁₀ = 10001100110₂

Therefore,

57.55₁₀ = 111001.10001100110₂

To know more about Base 10 to base 2 conversion here

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7 0
1 year ago
If you give correct answer with the Explanation I mark you brainliest answer and give 5 stars
Sedaia [141]

Answer:

x  = +4√5, x = -4√5

Step-by-step explanation:

Given:

x² - 80

Find:

Zeroes

Computation:

x² - 80

x² - 80 =  0

x² = 80

x = √80

x = ±4√5

x  = +4√5, x = -4√5

7 0
2 years ago
The amount of money Sally earns, P, varies directly with the number, n, of necklaces she sells. When Sally sells 15 necklaces, s
maksim [4K]

Answer:

Equation: P = 10n

P = 40 when n = 4

Step-by-step explanation:

Given

Direct Variation: P ∝ n

When n = 15, P = 150

Required

Determine the equation

Her earnings if she sold 4 necklaces

P ∝ n

Convert variation to equation

P = kn

When P = 150, n = 15 (Substitute these values in the given equation)

150 = k * 15

Divide both sides by 15

\frac{150}{15} = \frac{k * 15}{15}

10 = k\\k = 10

Substitute k = 10 in P = kn

P = 10 * n

P = 10n ------- Equation that relates P and n

When she sold 4 necklaces, n = 4

Substitute n = 4 in the formula above

P = 10 * 4

P = 40

4 0
3 years ago
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