Answer:
B.
Step-by-step explanation:
A regular hexagon, a rectangle, and a regular parallelogram all have at least 2 pairs of parallel sides. The sides opposite of each other are parallel. A trapezoidal only has one pair of parallel lines and a kite has 0 parallel sides.
<span>She could round this number
may it be in the tens and hundreds place. When rounding off a number, one
should consider the place of the digit he or she would like to round it off to.
One should consider what number is placed at the right of the rounding number.
If the number is below 5, then that digit should remain and the rest of the
digits to the right should be turned to 0s. </span>
Answer:
See description below.
Step-by-step explanation:
An inequality is an equation with more than one solution and they use <, >,
or
. There are a number of ways to work with inequalities.
Solving: To solve inequalities in one variable, treat it just like an equation. Solve using inverse operations. If you divide or multiply by a -1 then be sure to flip the sign. For example, if you have > then it becomes <.
Graphing on a number line: To graph inequalities in one variable, use a number line. Plot a point on the number line with an open circle then an arrow pointing toward the solution set. If you have an equal to, you would shade in the open circle.
Solving: To solve inequalities in two variables, you need a system meaning more than one. You solve it like a system of equations by graphing.
Graphing: To graph inequalities with two variables, graph each in y=mx+b form using the y-intercept and slope. Connect the points with a dashed line unless equal to. Equal to inequalities have a solid line. To show the solution set, shade the side of the inequality which (x,y) points make it true. To find this, test a point by substituting into the inequalities.
Answer:
D. 15
Step-by-step explanation:
Given the expression, 32 + 2n - 9, and a value of <em>n </em>= -4:
You can substitute the value of <em>n</em> into the given expression:
= 32 + 2n - 9
= 32 + 2(-4) - 9
= 32 - 8 - 9
= 15
Therefore, the correct answer is D. 15
Please mark my answers as the Brainliest if my explanations were helpful :)
Answer:
The expression that shows how long the two machines will operate simultaneously is:

Step-by-step explanation:
We know that:
x: hours to manufacture a deck of cards for machine A
y: hours to manufacture a deck of cards for machine B
z: hours that machine A operates alone
The number of decks manufactured only by machine A is:

So, the remaining decks are given by:

Then, the combined rate of machines A and B would be:

The work-rate formula is:

Hence, the time that the two machines work simultaneously is:

