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Amanda [17]
3 years ago
8

Please Help! Geometry!

Mathematics
1 answer:
MrMuchimi3 years ago
8 0

Answer: the expression is

A = Sin^-1(D/bc)

Step-by-step explanation:

The formula for determining the area of a triangle is expressed as

Area = bcSinA

Where b and c are the length of each side of the triangle. Angle A is the given angle corresponding to side a.

The area of the given triangle is D. It means that

D = bcSinA

Therefore, the expression that can be used to find the measure of angle A would be

D = bcSinA

Dividing both sides of the equation by bc, it becomes

D/bc = bcSinA/bc

SinA = D/bc

Taking inverse of sine of both sides of the equation, it becomes

A = Sin^-1(D/bc)

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The area of a rectangle is 12.65 m^2. the length measures 5.5 m. what is the width of the rectangle?
Nat2105 [25]

Answer:

The width of the rectangle is 2.3 m

Step-by-step explanation:

Now, when we are asked to find the area of the rectangle, we will use the formula: Area= length * width. We should be given with at least two values, and then we can use the above formula and can find the third variable.

Now, we are given that the area of a rectangle is 12.65 m^2 and the length measures 5.5 m

So the width is given as:

Area= length * width\\\Rightarrow 12.56= 5.5 * width\\\Rightarrow width= \frac{12.56}{5.5}\\\Rightarrow width=2.3 ~m

So this is the required with of the rectangle.

4 0
3 years ago
Read 2 more answers
SELECT ALL the expressions that are equivalent to -2(4 - 3x) + (5x - 2)
erma4kov [3.2K]

Answer:

Option B, c and e are the correct

7 0
3 years ago
X/9 times 15-47=28<br> help pls
DIA [1.3K]

Answer:

x=45

Step-by-step explanation:

Then,

x/5(15)-47=28

Step 1: Simplify the equation on both sides

x/9(15)-47=28

5/3x-47=28

Step 2: Add 47 to both sides

5/3x-47+47=28+47

5/3x=75

Step 3: Multiply both sides by 3/5

(3/5)*(5/3x)=(3/5)*(75)

x=45

4 0
2 years ago
Which representation of a transformation on a coordinate grid does not preserve congruence?
Alex17521 [72]

Answer:

B

Step-by-step explanation:

Consider all options:

A. Transformation with the rule

(x,y)\rightarrow (x,-y)

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Reflection across the x-axis preserves the congruence.

B. Transformation with the rule

(x,y)\rightarrow \left(\dfrac{7}{8}x,\dfrac{7}{8}y\right)

is a dilation with a scale factor of \frac{7}{8} over the origin.

Dilation does not preserve the congruence as you get smaller figure.

C. Transformation with the rule

(x,y)\rightarrow (x+6,y-4)

is a translation 6 units to the right and 4 units down.

Translation 6 units to the right and 4 units down preserves the congruence.

D. Transformation with the rule

(x,y)\rightarrow (y,-x)

is a clockwise rotation by 90^{\circ} angle over the origin.

Clockwise rotation by 90^{\circ} angle over the origin preserves the congruence.

3 0
3 years ago
X+6=x<br> can you help please thank you
Anna35 [415]

x + 6 = x

there is literally no solution.

7 0
3 years ago
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