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3 years ago

Write (2b^2)^3 without exponents.

Mathematics

2 answers:

babunello [35]3 years ago

5 0

64xbxbxbxbxbxb
Because you expand

Studentka2010 [4]3 years ago

4 0

Answer:

64 * b * b * b * b * b * b

Step-by-step explanation:

Apply exponent to number first, then expand the variable's exponent into repeated multiplication.

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Solve 3x − 2y = −21 and 2x + 5y = 5 using elimination

nydimaria [60]

Answer:

x = -5 and y = 3

Step-by-step explanation:

There are two equations :

3x − 2y = −21 ....(1)

2x + 5y = 5 ......(2)

Multiply equation (1) by 2 and equation (2) by 3.

6x - 4y = -42 ...(3)

6x + 15y = 15 ....(4)

Subtract equation (4) from (3) :

6x - 4y - (6x + 15y) = -42 -15

-4y -15y = -57

-19y = -57

y = 3

Put y = 3 in equation (2) :

2x + 5(3) = 5

2x = 5-15

2x = -10

x = -5

So, the value of x is (-5) and y = 3.

6 0

2 years ago

Geometry multiple choice question HELPPP!!!??

Bas_tet [7]

Answer:

24/30

Step-by-step explanation:

5 0

2 years ago

PLEASE HELP ME!!! Mari and Jack each bought a sofa from a furniture store. Mari’s sofa cost $600. She paid $200 when she bought

lutik1710 [3]

Answer:

I am solving it rn! one sec bro :)

5 0

2 years ago

Read 2 more answers

The number of blue chips is 3 more than twice the number of red chips

Elenna [48]

Answer:

red: x

blue: 2x+3

Step-by-step explanation:

let the number of red chips= x

let the number of blue chips= 2x+3

7 0

3 years ago

Read 2 more answers

Tell whether the lines through the given points are parallel, perpendicular, or neither.

antoniya [11.8K]

Answer:

The Slope of Line 1 is -> $-\frac{2}{9}$

The Slope of Line 2 is -> $-\frac{9}{2}$

These two lines are - > Perpendicular

Step-by-step explanation:

To find the slope of line one, you follow these steps:

First Coordinate 10 -> x1, 5 -> y1

Second Coordinate -8 -> x2, 9 -> y2

Then insert the assigned values into this equation: $\frac{y2-y1}{x2-x1}$ -> $\frac{9-5}{-8-10}$ which equals $\frac{4}{-18}$ which simplifies to $-\frac{2}{9}$

Then do the same process to find the slop of line 2:

First Coord: 2 -> x1, -4 -> y1

Second Coord: 11 -> x2, -6 -> y2

Then insert the values into this equation: $\frac{y2-y1}{x2-x1}$ -> $\frac{11-2}{-6-(-4)}$ which equals $\frac{9}{-2}$ .

We know the lines are perpendicular by:

a. Typing the equations of the lines into a graphing calculator and observing the graph

b. Looking at the slopes. By looking at the slopes, we see that the slope of line 1 is the reciprocal of line 2, and vice versa. Since reciprocal slopes indicate perpendicular lines, the lines 1 and 2 are perpendicular to each other.

Hope this helps!

5 0

3 years ago