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4 years ago

What does how can the term unit square help you to remember that area is measured in square units

Mathematics

1 answer:

erik [133]4 years ago

4 0

When a number has an exponent of 2 by it (x^2) , it means it's squared and that's it

I think.....

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Solve or exact value 1+2sinx=0

vodomira [7]

<span>2sinx = -1

Divide both sides by 2.

sinx = -(1/2)

In the unit circle, we are given two answers for sinx = -(1/2).

x = 210 degrees AND 330 degrees </span>

6 0

4 years ago

Read 2 more answers

Building A is 170 feet shorter than building B. The total height of the two buildings is 1520 feet. what is the height of each b

Drupady [299]

Answer:

Step-by-step explanation:

If A is 170 less than B, than the equation for that is:

A = B - 170 (1) where the word "is" means equals and less than is subtraction.

If the total of A + B is 1520, then

A + B = 1520 (2). Sub equation (1) into equation (2):

(B - 170) + B = 1520 and

2B - 170 = 1520 and

2B = 1690 so

B = 845. Building B is 845 feet tall and Building A is

A = 845 - 170 (this is equation (1) with the height of B subbed in) so

A = 675 feet

675 + 845 should equal 1520 according to our equation. And of course it does.

4 0

3 years ago

There are four queens in a standing desk of 52 cards you pick one card at random .what is the probability of not taking a queen?

snow_tiger [21]

I think it should be 1/5

4 0

4 years ago

Read 2 more answers

Quadrilateral ABCD has coordinates A (3, 1), B (4, 4), C (7, 5), D (6, 2). Quadrilateral ABCD is a (4 points)

Llana [10]

Answer:

Quadrilateral ABCD is a SQUARE

Step-by-step explanation:

When we are given coordinates (x1, x2) and (y1 , y2) for a Quadrilateral, we solve for the sides using this formula.

√(x2 - x1)² + (y2 - y1)²

A (3, 1), B (4, 4), C (7, 5), D (6, 2)

Side AB = A (3, 1), B (4, 4)

√(x2 - x1)² + (y2 - y1)²

= √(4 - 3)² + (4 - 1)²

= √1² + 3²

= √1 + 9

= √10

Side BC = B (4, 4), C (7, 5)

√(x2 - x1)² + (y2 - y1)²

= √(7 - 4)² + (5 - 4)²

= √3² + 1²

= √9 + 1

= √10

Side CD = C (7, 5), D (6, 2)

√(x2 - x1)² + (y2 - y1)²

= √(6 - 7)² + (2 - 5)²

= √(-1) ² + (-3)²

= √1 + 9

= √10

Side AD = A (3, 1), D (6, 2)

√(x2 - x1)² + (y2 - y1)²

= √(6 - 3)² + (2 - 1)²

= √3² + 1²

= √9 + 1

= √10

From the above calculation,

Side AB = √10

Side BC = √10

Side CD = √10

Side AD = √10

Hence, AB = BC = CD = AD

When all the side of a Quadrilateral are the same or equal to each other, it means the Quadrilateral is a square.

Therefore, Quadrilateral ABCD is a SQUARE

7 0

3 years ago

Determine the

AlladinOne [14]

Answer:

a₄ = - $\frac{27}{2}$

Step-by-step explanation:

In a geometric sequence, the common ratio r is calculated as

r = $\frac{a_{2} }{a_{1} }$ = $\frac{a_{3} }{a_{2} }$ , substitute values

$\frac{2x+2}{x}$ = $\frac{3x+3}{2x+2}$ ( cross- multiply )

(2x + 2)² = x(3x + 3) ← expand both sides

4x² + 8x + 4 = 3x² + 3x ( subtract 3x² + 3x from both sides )

x² + 5x + 4 = 0 ← in standard form

(x + 1)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 4 = 0 ⇒ x = - 4

However x ≠ - 1 as this would make the denominator of the second term equal to zero and therefore undefined.

Thus x = - 4 and

r = $\frac{2(-4)+2}{-4}$ = $\frac{-8+2}{-4}$ = $\frac{-6}{-4}$ = $\frac{3}{2}$

Then

a₁ = - 4

a₂ = - 4 × $\frac{3}{2}$ = - 6

a₃ = - 6 × $\frac{3}{2}$ = - 9

a₄ = - 9 × $\frac{3}{2}$ = - $\frac{27}{2}$

7 0

3 years ago