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nadya68 [22]
1 year ago
14

Triangle A B C is shown. Angle B C A is a right angle. The length of hypotenuse A B is 5, the length of B C is 3, and the length

of A C is 4. What is the length of the side opposite Angle B? 3 units 4 units 5 units 6 units

Mathematics
1 answer:
svetoff [14.1K]1 year ago
5 0

The side opposite to angle B is the side that does not contact with angle B.

In this attached image, you can see better that sides AB and BC is in contact with angle B. So, the opposite side to angle B is AC.

Therefore, the lenght of the side opposite to angle B is 4 units.

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Simplify the trigonometric expression.<br> sin4(α) − cos4(α) + cos2(α)
natulia [17]

Answer:

sin²(α)

Step-by-step explanation:

sin⁴(α) − cos⁴(α) + cos²(α)

sin⁴(α) − cos²(α) (cos²(α) − 1)

sin⁴(α) − cos²(α) (-sin²(α))

sin⁴(α) + sin²(α) cos²(α)

sin²(α) (sin²(α) + cos²(α))

sin²(α) (1)

sin²(α)

5 0
1 year ago
A rectangular piece of paper has a width that is 3 inches less than its length. It is cut in half along a diagonal to create two
Oliga [24]

Let

x-------> the length of the rectangle

y------> the width of the rectangle

we know that

The area of the rectangle is equal to

A=x*y

The area of the two congruent right triangles  is equal to the area of the rectangle

A=2*44=88\ in^{2}

so

88=x*y -------> equation A

y=x-3 -----> equation B

Substitute equation B in equation A

x*[x-3]=88

x^{2} -3x-88=0 --------> equation that can be used  to solve for the length of the rectangle

Using a graph tool-------> solve the quadratic equation

see the attached figure

The solution is

x=11\ in -----> the length of the rectangle

Find the value of y

88=11*y

y=8\ in  ----> the width of the rectangle

Statements

<u>case A)</u> The area of the rectangle is 88 square inches

The statement is True

See the procedure

<u>Case B)</u> The equation  x*[x-3]=44 can be used to solve for the dimensions of the triangle

The statement is False

Because, the equation x*[x-3]=88 can be used to solve for the dimensions of the triangle

<u>case C)</u> The equation x^{2} -3x-88=0 can be used to solve for the length of the rectangle

The statement is True

see the procedure

<u>case D)</u>The triangle has a base of 11 inches and a height of 8 inches

The statement is True

Because, the base of the triangle is equal to the length of the rectangle and the height of the triangle is equal to the width of the rectangle

<u>case E)</u> The rectangle has a width of 4 inches

The statement is False

See the procedure

8 0
1 year ago
Read 2 more answers
What is the y-intercept of the function f(x) = –f(x) equals negative StartFraction 2 Over 9 EndFraction x plus StartFraction 1 O
lora16 [44]

Answer: Third option

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

y=mx+b

Where "m" is the slope of the line and "b" is the y-intercept.

Given the function f(x):

f(x)=-\frac{2}{9}x+\frac{1}{3}

Since f(x)=y, you can rewrite it:

y=-\frac{2}{9}x+\frac{1}{3}

You can identify that:

m=-\frac{2}{9}\\\\b=\frac{1}{3}

Therefore, you can determine that the y-intercept of the given function is:

b=\frac{1}{3}

Observe that this matches with the third option.

3 0
2 years ago
Read 2 more answers
When Joanne checked her Work by substituting the value of the variable back into the equation she got an answer of 12.34 equals
Bas_tet [7]

Answer:

Joanne could have rounded her answer to a specific decimal place, rather than using the exact answer. If you use a rounded answer to verify your solution, you may get a statement that is not exactly equal. The numbers, 12.34 and 12.33 are very close to each other, so Joanne can assume she solved the multistep equation correctly.

Step-by-step explanation:

Facts

3 0
1 year ago
Read 2 more answers
10. Triangle PQR has vertices P(5, -1), Q(0, 8), and R(7, 5). It is translated right 3 units and up 6 units. Find the coordinate
Brrunno [24]
P' (8,5)
Q' (3,14)
R' (10, 11)

Why: Anything that is translated left or right you will be changing the x axis,  if the translation is right, you add, if its left, you subtract. If the translation is up or down, its going to change the y axis. Down means you subtract from the y axis, up means you add to the y axis. 
3 0
2 years ago
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