i need help with questions 12 and 13 please i dont understand this at all

Answer:

0.78 cubic inches/sec

Step-by-step explanation:

you take 3.9 cubic feet and multiply it by 12 to convert it into inches and you get 46.8 cubic inches. then you divide by 60 to convert minutes to second and you get 0.78. hope that helps

Answer:

1123.2 cubic inch per second

Step-by-step explanation:

3.9 feet^3 = per minute

? = second

39 = 60 sec

? = 1 sec

39/60 =0.65 feet cubic

1 cubic foot = 1728 cubic inch

0.65 feet cubic = ?

0.65 * 1728

= 1123.2 cubic inch

Answer:

[tex]d = \sqrt{13}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra II

Step-by-step explanation:

Step 1: Define

Point A (-2, 1)

Point B (1, -1)

Step 2: Find distance d

The graph that has the slope that best represents the unit rate of 4 miles per hour is: graph B.

For any proportional relationship, we can find the slope of the graph by using any point on the line of the graph. The slope of the graph is also the unit rate, Therefore, picking a point on the line, (x, y), we have:

Slope (m) = y/x.

Number of miles Tyrell walks (y) = 12 miles

Time spent working (x) = 3 hours

The unit rate or slope = y/x = 12/3

Slope/unit rate (m) = 4 miles per hour.

From the graphs given, only graph B has the same unit rate/slope as 4, when we use the point, (5, 20).

Slope of graph B = 20/5 = 4.

Therefore, the graph that has the slope that best represents the unit rate of 4 miles per hour is: graph B.

Learn more about slope of a graph on:

https://brainly.com/question/12242745

#SPJ1

Answer:

-15

Step-by-step explanation:

(5)(−2)−(21−(3−11)(−2))

=−15

HAve a wonderful day Brainliest Please.

^two-dimentional figure^

area from circle

=

[tex]\pi \times r ^{2} [/tex]

=3,14 × 50²

=3,14 × 2500

=7850 cm².

closest= 7854 cm² ✅✅

Answer:

x=1

Step-by-step explanation:

Trust me on this one

Answer:

x = 1

Step-by-step explanation:

Let's do this quickly and easily,

30 = 5(x + 5)

30 = 5x + 25

5x = 30 - 25

x = 5/5

x = 1

Hope it helps!<3

Answer:

c

Step-by-step explanation:

Answer:

A. 360

B. 780

C. 350

Step-by-step explanation:

Times the time by the speed

Answer:

I think the domain would be the x values and range would be the y values in the given 2 points.

Domain : [2 , 8]

Range : [-5 , -3]

I hope you get this right.

Answer:

8y+2zand^3x+3z+4

Step-by-step explanation:

The length of QT should be considered when the Parallelogram QRST where QR = 6X - 5 is to be [tex]x=-13/3[/tex].

SInce

Parallelogram QRST where QR = 6X - 5 and RS = 4x + 13

So here we can write like

-3x = 13

x = [tex]-13 /3[/tex]

hence, The length of QT should be considered as the [tex]x=-13/3[/tex].

Learn more about length here: https://brainly.com/question/21005254

Answer:

48x = 14

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

Step 1: Define Systems

50x - y = 6

-2x + y = 8

Step 2: Solve for x

Elimination

Answer:

The correct option is;

f(x) = 64(three-fourths)Superscript x minus 1

Step-by-step explanation:

The first peak height that the bouncing toy reaches = 64 inches

The second peak height that the bouncing toy reaches = 48 inches

The third peak height that the bouncing toy reaches = 36 inches

Therefore, given that the sequence has a common ratio, r = 48/64 = 36/48 = 3/4

The first term of the sequence, a = The first peak height reached = 64

The xth term of the geometric sequence with general form, xth term = ar⁽ˣ⁻¹⁾

The xth term of the geometric sequence, f(x), is therefore, given as follows;

[tex]f(x) = 64 \times \left(\dfrac{3}{4} \right) ^{(x - 1)}[/tex]

The correct option is;

f(x) = 64(three-fourths)Superscript x minus 1

Step-by-step explanation:

The first peak height that the bouncing toy reaches = 64 inches

The second peak height that the bouncing toy reaches = 48 inches

The third peak height that the bouncing toy reaches = 36 inches

Therefore, given that the sequence has a common ratio, r = 48/64 = 36/48 = 3/4

The first term of the sequence, a = The first peak height reached = 64

The xth term of the geometric sequence with general form, xth term = ar⁽ˣ⁻¹⁾

The xth term of the geometric sequence, f(x), is therefore the correct answer is C

Answer:

The slope of a line parallel to this line will be: 6

The slope of the perpendicular line will be: -1/6

Step-by-step explanation:

We know the slope-intercept form

[tex]y=mx+b[/tex]

Here,

Given the equation

[tex]y=6x-7[/tex]

Thus, the slope of the line is: 6

The slope of a line parallel to the line:

We have already determined that the slope of the line is: 6

Thus, the slope of a line parallel to this line will be: 6

The slope of a line perpendicular to the line:

We have already determined that the slope of the line is: 6

As we know that the slope of the perpendicular line is basically the negative reciprocal of the slope of the line.

Thus,  the slope of the perpendicular line will be:

[tex]\frac{-1}{6}\:\:[/tex]

[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}[/tex]

[tex]=-\frac{1}{6}[/tex]

Therefore, the slope of the perpendicular line will be: -1/6

Answer:

49 and 97 is not the answer

Answer:

The y-intercept is 2

Step-by-step explanation:

In the image you can see the line going through the 2.

Answer:

[tex]x=3[/tex]

Step-by-step explanation:

For a shape to be a parallelogram, the angles that are across from one another have to be equal.

We can now find x by making both equations equal to each other and solving.

[tex]11x+1=13x-5[/tex]

Solve.

[tex]11x+1=13x-5\\6=2x\\x=3[/tex]

Answer:

1.17*10^14 km

Step-by-step explanation:

kindly find attached the image for your reference

Step one:

The diameter of Mars is approximately 6794 km

hence the radius is = 6794/2= 3397km

Step two:

Use the Pythagorean Theorem

[tex]x^2 + 3397^2 = (3397 + 25)^2\\\\[/tex]

[tex]x^2 + 11539609 = (11710084)^2\\\\x^2 + 11539609 = (11710084)^2\\\\x^2= (11710084)^2-11539609 \\\\x^2= 1.37*10^14-11539609 \\\\x^2=1.37*10^14\\\\x= √1.37*10^14\\\\x=1.17*10^14 km[/tex]

Answer:

3x+2=17

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Using the sine ratio on the right triangle on the right to find x

sin30° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{x}{70}[/tex] ( multiply both sides by 70 )

70 × sin30° = x , thus

x = 35

-----------------------------------------------

Using the sine ratio on the right triangle on the left to find y

sin42° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{x}{y}[/tex] = [tex]\frac{35}{y}[/tex] ( multiply both sides by y )

y × sin42° = 35 ( divide both sides by sin42° )

y = [tex]\frac{35}{sin42}[/tex] ≈ 52.3 ( to the nearest tenth ) → A

Answer:

y = 52.3.

Step-by-step explanation:

Consider the larger triangle on the right:

sin 30 = x / 70

x = 70 sin 30 = 70 * 0.5

= 35.

So, considering the small triangle:

Sin 42 = 35/y

y * sin 42 = 35

y = 35 / sin 42

y = 52.3.

Answer:no graph is shown below

Step-by-step explanation:

But since is no solution they can't have the same slope.

Answer:

B and E

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

9:6 reduced is 3:2

Answer:

Step-by-step explanation:

if someone drove 640 miles in 4 hours,

, it means that they drove 640/4=160 miles per hour

in 12 hours

160*12=1920

or

640............................4 h

640*3.........................4*3 hours

which give syou the same answer

1920.............................12 hours

Answer:

1,920 miles

Step-by-step explanation:

640 divided by 4 = 160

160 x 12 = 1,920

Answer:

[tex]xm+nxy=14[/tex]

Step-by-step explanation:

Given that x = 2, y = 3, m = 4 and n= 1.

Putting all the given values to get the value of xm+nxy.

So, the value of [tex]xm+nxy=2\times 4 + 1\times 2 \times 3=14[/tex]

Hence, [tex]xm+nxy=14[/tex].

Answer:

(2, 2[tex]\sqrt{3}[/tex]) and (4,0)

Step-by-step explanation:

Let x be half of the triangles length

3x  = 6

x = 2

so B should be (2, 2[tex]\sqrt{3}[/tex])

and D should be (4, 0)