3 years ago

Which is equivalent to 23·2-5? A) 2-15 B) 2-8 Eliminate C) 2-2 D) 22

Mathematics

1 answer:

bulgar [2K]3 years ago

4 0

2^3 * 2^-5 = 2^(3 + (-5) = 2^(3 - 5) = 2^-2

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Solve for x. Show each step of the solution. Show each step when solving for x.

andrew-mc [135]

-3x(4-6x) < x+5

-12x+18x² < x+5

-13x+18x² < 5

18x²-13x-5<0.

4 0

3 years ago

Ratios that are equivalent to 25%

Nataliya [291]

Percent means parts ot of 100
25%=25/100=1/4
ratio is 1:4 or 2:8 or 6:12

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3 years ago

What’s the correct answer for this question?

Helen [10]

Answer:

( -1 , 1 )

Step-by-step explanation:

(x1,y1) = (5,9)

(x2,y2) = (-7,-7)

=(-7+5/2 , -7+9/2)

= (-1,1)

3 0

3 years ago

Find y Solve the simultaneous equations 3x + 2y = 27 3x - Y = 9

lutik1710 [3]

Answer:

$y = 6$

Step-by-step explanation:

To find $y$ , we need to eliminate $x$ in this system of equations:

$3\cdot x + 2\cdot y = 27$ (1)

$3\cdot x - y = 9$ (2)

From (1) and (2):

$x = \frac{27-2\cdot y}{3}$

$x = \frac{9+y}{3}$

Then, we equalize both expressions and solve for $y$ :

$\frac{27-2\cdot y}{3} = \frac{9+y}{3}$

$27-2\cdot y = 9 + y$

$3\cdot y = 18$

$y = 6$

6 0

3 years ago

2) -4x – 6(3x + 4) = -4 + 8(1 - x)

likoan [24]

Answer:

x=-2

Step-by-step explanation:

-4x – 6(3x + 4) = -4 + 8(1 - x)

Distribute

-4x – 18x -24 = -4 + 8 -8x

Combine like terms

-22x -24 = 4-8x

Add 22x to each side

-22x+22x -24 = 4-8x+22x

-24 =4+14x

Subtract 4 from each side

-24-4 = 4+14x-4

-28 = 14x

Divide each side by 14

-28/14 =14/14

-2 =x

5 0

3 years ago

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