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2 years ago

Which values for A and B will create infinitely many solutions for this system of equations

Mathematics

1 answer:

Ratling [72]2 years ago

7 0

Answer:

A = - 2 and B = - 8

Step-by-step explanation:

A = - 2 and B = - 8 will create infinitely many solutions for this system of equations

When you add both equations together and both sides are equal then the systems have infinitely many solutions

-2x - y = 8

2x + y = -8

--------------------Add

0 = 0

Both sides are equal 0

Infinitely many solutions

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If Jana bikes 15 miles in 50 minutes. How can you find the number of miles she bikes in one hour?

adell [148]

Answer:

Therefore,

Jana bikes 18 miles in one hour.

Step-by-step explanation:

Given:

Jana bikes,

15 miles ---------------> in 50 minutes

To Find:

How many miles ------------------> in 1 hour = 60 minutes

Solution:

Let 'x' miles Jana Bikes in 1 hour or 60 minutes

As, 1 hour = 60 minutes

The Ratio of Equation will be

$\dfrac{15}{x}=\dfrac{50}{60}$

Cross Multiplying we get

$x=\dfrac{900}{50}=18\ miles$

Therefore,

Jana bikes 18 miles in one hour.

8 0

2 years ago

Express each answer in simplified radical form √24+4√54=?

VMariaS [17]

Answer:

The answer to your question is: $14\sqrt{6}$

Step-by-step explanation:

√24+4√54

$\sqrt{2^{2}(2)(3)} + 4\sqrt{3^{2}(3)(2) }$

$2\sqrt{6} + 12\sqrt{6}$

$14\sqrt{6}$

3 0

3 years ago

{(-1, 4), (-1, 9), (-1, 15), (-1, 0)}

marishachu [46]

Answer:

domain is -1

range is {4, 9, 15, 0}

function: not a function

6 0

2 years ago

Two expressions that equal 19

aev [14]

There are many like

1(10)+10-1=19

18+1=19

30-11=19

<span>15+4=19</span>

5 0

3 years ago

Please help I will mark brainlist if correct

love history [14]

--------------------------------------------------------------------------
Equation
--------------------------------------------------------------------------
$y - 9 = - \dfrac{1}{2} (x + 2)$

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Rearrange the equation
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$y - 9 = - \dfrac{1}{2} (x + 2) \\ \\
 y - 9 = - \dfrac{1}{2}x - 1 \\ \\
 y - 9 + 9 = - \dfrac{1}{2}x - 1 + 9 \ \Longleftarrow \text{add 9 to both side} \\ \\
 y = -\dfrac{1}{2}x + 8$

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slope of the perpendicular line
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slope = 2

(*the slope of the perpendicular line is the <span>negative reciprocal of the slope of line)</span>

---------------------------------------------------------------------------
Substitute slope into equation y = mx + c
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y = 2x + c

---------------------------------------------------------------------------
Find y-intercept
---------------------------------------------------------------------------
y = 2x + c
At point (0, 4)
4 = 2(0) + c
c = 4

----------------------------------------------------------------------------
Substitute y-intercept into the equation y = 2x + c
-----------------------------------------------------------------------------
y = 2x + 4

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Answer: y = 2x + 4
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3 0

3 years ago