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3 years ago

What is the value of x? enter your answer in the box. x =

Mathematics

1 answer:

leonid [27]3 years ago

4 0

Answer:

Step-by-step explanation:

Sum of all angles of triangle = 180

39 + 102 + x = 180

141 + x = 180

Subtract 141 from both sides

x = 180 - 141

x = 39

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A cylinder has a radius of 3 feet and a height of 7 feet. Which of the following can be used to calculate the volume of a cone t

kramer

Answer:

$(3.14)(3)(7)$

Step-by-step explanation:

we know that

The volume of the cone is equal to

$V=\frac{1}{3}\pi r^{2} h$

we have that the radius and the height of the cone will be equal to the radius and the height of the cylinder

$r=3\ ft$

$h=7\ ft$

$\pi =3.14$

substitute the given values

$V=\frac{1}{3}(3.14)(3)^{2} (7)$

$V=\frac{1}{3}(3.14)(9)(7)$

Simplify

$V=(3.14)(3)(7)$

5 0

3 years ago

Multiply 2 5/8 and -2 3/5

Rina8888 [55]

Answer:

-6 33/40

Step-by-step explanation:

2 5/8 * -2 3/5

Change each to an improper fraction

2 5/8 = (8*2+5)/8 = 21/8

2 3/5 = (5*2+3)/5 = 13/5

21/8 * -13/5

-273/40

Change to mixed number

40 goes into 273 6 times

6*40 = 240 273-240 =33

-6 33/40

8 0

3 years ago

Find the inverse of function f. f(x) = 1/2x +7 / <img src="https://tex.z-dn.net/?f=f%28x%29%3D%5Cfrac%7B1%7D%7B2%7Dx%20%2B%207"

kvasek [131]

The answer is C.) f^-1 (x) = 2x- 14 / $\:f^{-1\:}\left(x\right)=2x\:-\:14$

5 0

3 years ago

Use point-slope form to write the equation of a line that passes through the point

Ymorist [56]

Answer:

y= -2x-22.

Step-by-step explanation:

1) the slope-interception common form is y=s*x+i, where 's' and 'i' are the slope and interception, unknown numbers;

2) if x₁= -3; y₁= -16, and s=-2, then the equation of the required line can be written in the point-interception form y-y₁=s(x-x₁); ⇔ y+16= -2(x+3);

3) the required equation in slope-interception form is:

y+16= -2x-6; ⇒ y= -2x-22.

note, the provided solution is not the only and shortest way.

5 0

2 years ago

Identify which of the following is not equivalent to 2 3/4.

mezya [45]

The figure that is not equivalent to 2¾ is 2¼ × 2½. That is option B.

<h3>Simplification of equivalent fractions</h3>

Simplification is a process that is used to make a fraction appear in its simplest forms.

The fraction given is = 2¾

The simplification of the fraction= 2^3/4 = 2

But simplification of 2¼ × 2½ is equal to;

2¼= 0.5

2½= 1

Therefore 2¾ is not equivalent to 2¼ × 2½ when simplified.

Learn more about fraction here:

brainly.com/question/78672

#SPJ

6 0

2 years ago