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4 years ago

HELP PLEASE IM BEING TIMED!! WILL GIVE BRAINLIEST!!

Mathematics

1 answer:

kolbaska11 [484]4 years ago

8 0

ANSWER

The correct choice is C.

EXPLANATION

The perimeter of a rectangle is given by;

P=2(w+l)

For the first rectangle, the perimeter is;

P=2(8+4)=24

For the second rectangle, the perimeter is

P=2(8+8)=32

For the third rectangle, the perimeter is

P=2(8+12)=40

The correct choice is C

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1) A couple is expecting the birth of a baby boy. They will name the child by choosing a first name

posledela

Answer:

C. 30

Step-by-step explanation:

We have a list of names that need to be sorted in a specific order. For this, we will use a permutation. This can be found on a scientific calculator, however, I'll be using the equation.

$_nP_r=\frac{n!}{(n-r)!}$

n = total number of objects

r = number of objects selected

In this instance, n will equal 6 since we have 6 different names to choose from and r will equal 2 since we are picking two names. Enter the values into the equation and evaluate.

$_6P_2=\frac{6!}{(6-2)!}=30$

Therefore, there are 30 possible two-part names.

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3 years ago

Craig went to see a play at a theater downtown. The first act was 45 minutes long. Intermission lasted for 55 minutes and the se

Digiron [165]

Answer:

The play started at 5:10 PM.

Step-by-step explanation:

We are given the following in the question:

Length of first act = 45 minutes

Length of intermission = 55 minutes

Length of second act = 1 hour and 10 minutes

1 hour = 60 minutes

Thus, length of second act =

$=60+10\\=70\text{ minutes}$

The second part ended at 8:00 PM. We have to find the starting time of play.

Starting time of play =

$= 8-\dfrac{45+55+70}{60}\\=8 - 3\text{ hours} + 10\text{ minute}\\=5:10\text{ PM}$

Thus, the play started at 5:10 PM.

3 0

3 years ago

What is the slope !! HELP ME ASAP

erik [133]

Answer:

-7/4

Step-by-step explanation:

Since the graph is moving down the slope has to be negative we need to write the answer in rise over run rise as in the y range and run as in x range

8 0

3 years ago

What is are the solutions to | x+4 |= 3x-5?

bonufazy [111]

Answer:

x = $\frac{9}{2}$

Step-by-step explanation:

The absolute value always returns a positive value but the expression inside can be positive or negative, that is

x + 4 = 3x - 5 ( subtract 3x from both sides )

- 2x + 4 = - 5 (subtract 4 from both sides )

- 2x = - 9 ( divide both sides by - 2 )

x = $\frac{9}{2}$

-(x + 4) = 3x - 5

- x - 4 = 3x - 5 ( subtract 3x from both sides )

- 4x - 4 = - 5 ( add 4 to both sides )

- 4x = - 1 ( divide both sides by - 4 )

x = $\frac{1}{4}$

As a check

Substitute these values into the equation and if both sides are equal then they are the solutions

| $\frac{9}{2}$ + 4 | = | $\frac{17}{2}$ | = $\frac{17}{2}$

right side = $\frac{27}{2}$ - 5 = $\frac{17}{2}$

left side = right side , thus x = $\frac{9}{2}$ is a solution

check second solution

| $\frac{1}{4}$ + 4 | = | $\frac{17}{4}$ | = $\frac{17}{4}$

right side = $\frac{3}{4}$ - 5 = - $\frac{17}{4}$

right side ≠ left sides, hence not a solution

7 0

4 years ago

Given that sec0=-37/12, what is the value of cot0, for pi/2<0

Colt1911 [192]

Answer:

2nd option

Step-by-step explanation:

Using the identities

tan²θ + 1 = sec²θ

cotθ = $\frac{1}{tan0}$

Given

secθ = - $\frac{37}{12}$ , then

tan²θ + 1 = (- $\frac{37}{12}$ )² = $\frac{1369}{144}$ ( subtract 1 from both sides )

tan²θ = $\frac{1225}{144}$ ( take the square root of both sides )

Since $\frac{\pi }{2}$ < θ < π and tanθ < 0 , then

tanθ = - $\frac{35}{12}$

Then

cotθ = $\frac{1}{-\frac{35}{12} }$ = - $\frac{12}{35}$

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3 years ago