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3 years ago

The table below shows four systems of equations:

1 answer:

Montano1993 [528]3 years ago

6 0

4x − 5y = 2
3x − y = 8
x= 38/11
y=26/11

4x-5y=2
3x − 8y = 4
x= -4/17
y=-10/17

4x - 5y =2
13x − 8y = 26
x= 38/11
y=26/11

4x-5y=2
10x + 3y = 15
x= 81/62
y=20/31

Therefore, the correct answer is the last option.

System 1 and system 3, because the second equation in system 3 is obtained by adding the first equation in system 1 to three times the second equation in system 1.

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What is the quotient and remainder of 29 divided by 5

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Answer:

5 remainder 4

25/5=5 and you have 4 left

Step-by-step explanation:

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3 years ago

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What number should be added to 7/12 to get 4/15?

DENIUS [597]

Answer:

Step-by-step explanation:

Let the number = x.

We are trying to find out what number (x) we would need to add to 7/12 to get 4/15

$\frac{7}{12} + x = \frac{4}{15}$

Subtract 7/12 from both sides.

$x = \frac{4}{15} - \frac{7}{12}$

We need to make the denominators of the fractions the same.

$\frac{4}{15} = \frac{16}{60}$

$\frac{7}{12} = \frac{35}{60}$

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3 years ago

20 POINTS!!

Finger [1]

Answer:

Since we have two congruent sides with one congruent angle in between the answer is SAS.

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4 years ago

2x-4y=-20 write it in y=ax+b form

True [87]

Answer:

$y = \frac{1}{2} x + 5$

Step-by-step explanation:

$2x - 4y = - 20 \\ \\ - 4y = - 2x - 20 \\ \\ y = \frac{ - 2}{ - 4}x - \frac{20}{ - 4} \\ \\ y = \frac{1}{2} x + 5$

8 0

3 years ago

What is the slope of each side of the triangle? the sides are A(-2,4) B(-1,1) C(2,3)

Rashid [163]

Answer:

The slopes of three sides of triangle are as follows:

AB = -3

BC = 2/3

AC = -1/4

Step-by-step explanation:

The slope is denoted by m and is calculated using the formula

$m = \frac{y_2-y_1}{x_2-x_1}$

The given vertices are:

A(-2,4) B(-1,1) C(2,3)

The sides will be:

AB, BC, AC

Let m1 be the slope of AB

Let m2 be the slope of BC

Let m3 be the slope of AC

Now

$Slope\ of\ AB = m_1 = \frac{1-4}{-1+2} = \frac{-3}{1} = -3\\Slope\ of\ BC = m_2 = \frac{3-1}{2+1} = \frac{2}{3}\\Slope\ of\ AC = m_2 = \frac{3-4}{2+2} = \frac{-1}{4} = -\frac{1}{4}$

Hence,

The slopes of three sides of triangle are as follows:

AB = -3

BC = 2/3

AC = -1/4

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3 years ago