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storchak [24]
3 years ago
15

A symbol, usually a letter, that represents an unknown quantity is called a ________________.

Mathematics
2 answers:
andrey2020 [161]3 years ago
6 0

Answer:

A variable is a symbol that represents an unknown or changeable number, typically a letter such as x, y, and z.

Step-by-step explanation:

GREYUIT [131]3 years ago
4 0

Answer:

a symbol, usually a letter, that represents an unknown quantity is called x.

Step-by-step explanation:

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Can someone please help me these are the questions. : Evaluate each numerical expression. Apply
Lorico [155]
I don’t know that one sorry
6 0
3 years ago
What is equivalent to (x+8)(x+4)?<br>1.x^2+12x32<br>2.2x^2+10x+12<br>3.2x^2+12x+16<br>​
Elza [17]

Answer:

1. x^2+12x+32

Step-by-step explanation:

(x+8)(x+4)

x(x+4)+8(x+4)

x^2+4x+8x+32

x^2+12x+32

3 0
3 years ago
Read 2 more answers
Please help i dont understand​
Greeley [361]

Given:

A quadrilateral inscribed in a circle.

To find:

The value of x and y.

Solution:

If a quadrilateral inscribed in a circle, then it is known as cyclic quadrilateral and the opposite angles of a cyclic quadrilateral are supplementary angles, it means their sum is 180 degrees.

5x^\circ+110^\circ=180^\circ                     [Supplementary angles]

5x^\circ=180^\circ -110^\circ

x^\circ=\dfrac{70^\circ}{5}

x^\circ=14^\circ

The value of x is 14 degrees.

2y^\circ+104^\circ=180^\circ                     [Supplementary angles]

2y^\circ=180^\circ -104^\circ

y^\circ=\dfrac{76^\circ}{2}

y^\circ=38^\circ

Therefore, the value of x is 14 degrees and the value of y is 38 degrees.

3 0
3 years ago
An architect builds a scale model of a track using a scale of 3 inches represents 40 feet. The length of the track is 20 feet. W
Alika [10]

Answer:

Step-by-step explanation:

Their is no answer sorry

4 0
3 years ago
If sin x = .99 and tan x = 7.07, what is cos x?
Greeley [361]
Multiplying both sides by cos x and dividing both sides by tan x results in 

<span>cos x = (sin x)/(tan x), and sticking in the numbers gives </span>

<span>cos x = 0.99/7.07 = 0.14.</span>
5 0
3 years ago
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