1 year ago

Represent the following sentence as an algebraic expression, where "a number" is the letter x.A number is subtracted from 2 .

Mathematics

1 answer:

Mariana [72]1 year ago

8 0

In general, the statement 'a is subtracted from b' is written as

$b-a$

Therefore, 'A number is subtracted from 2' is written as,

$2-x$

The answer is 2-x

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Two of the angles in a triangle measure 57º and 25°. What must be the measure of the

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The measure of the third angle in the triangle is 104 degrees

<h3>How to determine the measure of the third angles?</h3>

Let the three angles in the triangle be x, y and z.

Such that:

x = 51

y = 25

The sum of angles in a triangle is 180 degrees.

So, we have:

x + y + z = 180

Substitute known values

51 + 25 + z = 180

Evaluate the sum

76 + z = 180

Subtract 76 from both sides

z = 104

Hence, the measure of the third angle is 104 degrees

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2 years ago

Which equation can be used to solve for in the following diagram?<br> (8x - 20)°<br> 3xº

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Answer:

A. 3x° + (8x - 20)° = 90°

Step-by-step explanation:

The two given angles are complementary and sum to 90°

3x° + (8x - 20)° = 90°

Therefore correct choice is A.

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3 years ago

Calculate the distance between the two given point T(6,-2),U(-2,-12)

slava [35]

Use the distance formula: $\sqrt{(x2 - x1)^2 + (y2 - y1)^2}$

(6, -2), (-2, -12)
$\sqrt{(-2 - 6)^2 + (-12 - -2)^2}$ ⇒ $\sqrt{(-8)^2 + (-10)^2}$
$\sqrt{64 + 100}$ ⇒ $\sqrt{164}$
$\sqrt{164}$ = 12.8

The distance between points T and U is 12.8 units.

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3 years ago

A bottle of medicine contains 0.5 kilograms of medicine. One dose of medicine is 20g for kids & 45g for adults. If a medical

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No (see picture for explanation)