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3 years ago

Evaluate the following expression when r= 3 and t = 3. (2 + r) - 11

Mathematics

2 answers:

vitfil [10]3 years ago

4 0

Answer:

-6

Step-by-step explanation:

substitute

(2 + 3) -11

5 - 11

-6

marissa [1.9K]3 years ago

4 0

Answer:

The answer is -6

Step-by-step explanation:

First, plug in the numbers into the original equation - (2+(3))-11

Then, simplify. (5)-11

Simplify one more time. -6

(I dont see anywhere to use the (t) in your equation)

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Please solve the answer above correctly showing detailed working

Sergeeva-Olga [200]

<h2>Intersection and Union of Sets</h2><h3>Answer:</h3>

$A \cup B = \{ a, b, c, d, e \}$

$B \cap C = \{ d, e \}$

$A \cup C = \{ a, b, c, d, e, f \}$

<h3>Step-by-step explanation:</h3>

Given:

$A = \{ a, b, c, d \}$

$B = \{ b, d, e \}$

$C = \{ d, e, f \}$

The Union ( $\cup$ ) of sets $A$ and $B$ is just a set containing all the elements of sets $A$ and $B$ . However, elements that are present in both sets should not repeat in the Union of Sets as the elements of a set should distinct be from each other.

Part i:

$A \cup B \\ \{ a, b, c, d \} \cup \{ b, d, e \} \\ \{ a, b, c, d, e \}$

The Intersection ( $\cap$ ) of sets $A$ and $B$ is just a set containing all the elements that are both present in sets $A$ and $B$ .

Part ii:

$B \cap C \\ \{ b, d, e \} \cap \{ d, e, f \} \\ \{ d, e \}$

Part iii:

$A \cup C \\ \{ a, b, c, d, \} \cup \{d, e, f \} \\ \{ a, b, c, d, e, f \}$

8 0

3 years ago

ANSWER PLZ QUICK AND FAST

eduard

Multiply the decimal fraction by 100 ( this is same as moving the decimal point 2 places to the right,

So 0.361 = 36.1 % (answer)

3 0

4 years ago

Read 2 more answers

A water tank holds 216 gallons but is leaking at a rate of 3 gallons per week. A second water tank holds 324 gallons but is leak

Tems11 [23]

Answer:

Step-by-step explanation:

216 - 3x = 324 -5x

subtract 216 from both sides

add 5x to both sides

divide both sides by 2x.

7 0

3 years ago

A cylinder made of lead has a height of 4 inches and a diameter of 2 inches. How heavy is the cylinder if lead weighs 0.4 pound

My name is Ann [436]

Answer:5.0

Step-by-step explanation:

The volume of a cylinder is $\pi r^2h$ , since the radius is 1/2D, 2/2=1. Now, if $\pi$ is rounded to 3.14, the volume of the cylinder would be 1 x 1 x 3.14 x 4 = 12.56. Now, since there are 0.4 pound per cubic inch, 12.56 x 0.4 = 5.024. Rounded to tenth, the answer is 5.0 or 5.

Hope this helps!

3 0

3 years ago

Which of the following is the solution set to the inequality −25x+14>20? Select one: A. x < -64 B. x > -64 C. x < -1

Sindrei [870]

Answer:

x< -0.24

Step-by-step explanation:

So this is going to sound stupid, but I got x< -0.24 which is just not an option, but this is how I got it...

-25x+14>20

subtract 14 from each side

-25x>6

divide each side by -25

x< -0.24

I switch the way the sign was facing bc I divided by a negative.

Now I know that this must be wrong, but it makes the most sense because I am pretty sure I did all of the math right. Sorry this probably didnt help , but I did a lot of work to try and get the right answer, so Im not putting that work to waste

8 0

3 years ago