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2 years ago

Linear combination 3x+2y=-4 4x-y=13 Please give a step by step explanation

Mathematics

1 answer:

Ostrovityanka [42]2 years ago

8 0

when you have a linear combination for example 3x + 2y equals negative 4 you adieu like terms and then multiply

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Is 0.06 greater than 0.0582

Art [367]

Yes, 0.06 is greater than 0.0582.

If we look at the hundreths place, we can see 6 and 5. 6 is greater than 5 which proves that 0.06 is greater.

Best of Luck!

5 0

2 years ago

A bag contains 10 red marbles and 15 green marbles. If yuki selects a marble from the bag without looking,what is the probablity

Ne4ueva [31]

Answer:10/15 chance

Step-by-step explanation:

If there are 10 RED marbles and 15 GREEN marbles it would be the number of red marbles out of the total number of marbles.

5 0

2 years ago

Read 2 more answers

Find all values of x in the interval [0,2π] that satisfy the equation sin2x=cosx. enter your answers as a list of numbers separa

yuradex [85]

$\sin(2x) = \cos(x) \\ 2 \sin(x) \cos(x) = \cos(x) \\ \cos(x) (2 \sin(x) - 1) = 0$
so
$\cos(x) = 0 > > > x = \frac{\pi}{2} + k\pi \\ \sin(x) = \frac{1}{2} > > > x = \frac{\pi}{6} + 2k\pi \\ or \: x = \frac{5\pi}{6} + 2k\pi$
$x = \frac{\pi}{2} or \frac{3\pi}{2} \\ x = \frac{\pi}{6} or \frac{5\pi}{6}$

6 0

3 years ago

What is the inverse of the given relation y = 7x² ?

beks73 [17]

Answer:

y = square root(x/7)

Step-by-step explanation:

switch x and y

x = 7y^2

solve for y

x/7 = y^2

square root(x/7) =y

y inverse is

y= square root(x/7)

7 0

2 years ago

Backpack is normally $64.99, put on sale it is marked down to $45.49 what percent off is the sale price

pogonyaev

Answer:

The percent off on the sale price is 30%.

Step-by-step explanation:

Marked up price = $64.99

marked down Price = $45.49

Let us assume the off percentage = k%

Now, the Amount off on the sale = Marked up price - Marked down price

= $64.99 - $45.49 = $19.5

⇒ k% off on Marked up Price $64.99 = $19.5

or, $\frac{k}{100} \times 64.99 = 19.5\\\implies k = \frac{19.5 \times 100}{64.99} = 30$

or, k = 30%

Hence, the percent off on the sale price is 30%

8 0

2 years ago