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3 years ago

Anybody can help?????

Mathematics

1 answer:

Vikentia [17]3 years ago

7 0

The formula of an area of a circle:

$A=\pi r^2$

r - a radius

We have r = 14m. Substitute:

$A=\pi\cdot14^2=196\pi\ m^2$

If you want an approximate area, you can accept $\pi\approx3.14$

Then:

$A\approx196\cdot3.14=615.44\ m^2$

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Someone help me, please

vredina [299]

Answer:

A) W'(-3,-2) X'(-1,-5) Y'(0,-4)

B) 2) Perpendicular angles

4) Given

5) AT = BT

6) Statement : OT = OT

Reason : common side in both the triangles

8) By RHS congruency test

Step-by-step explanation:

A) The given coordinates are (2,0) (4,3) and (5,2).

The transformation is $(x,y) -> (x,-y) -> (x-5,y-2)$

For above all points;

$(2,0) -> (2,0) -> (2-5,0-2) -> (-3,-2)$

$(4,3) -> (4,-3) -> (4-5,(-3)-2) -> (-1,-5)$

$(5,2) -> (5,-2) -> (5-5,(-2)-2) -> (0,-4)$

Thus, the transformed points are;

W'(-3,-2) X'(-1,-5) Y'(0,-4)

B) 2) It given that OT is perpendicular to AB, thus both ∠BTO and ∠ATO are equal to 90 degrees.

4) The above statement is given.

5) The reason is T is midpoint, this means statement is regarding lengths of AT and BT.

Since T is midpoint, AT = BT

6) The side OT is contained in both the triangles.

8) Since one right angle is equal, Both lengths are equal and one side is common, the above two triangles are congruent by RHS congruency test.

4 0

4 years ago

Which number sentence is represented by this model?

Makovka662 [10]

Answer:

Correct answer is B. -3 • 5 = - 15

3 0

2 years ago

The blueprint for Moreno's living room has a scale of 2 inches equals 3 feet. The family wants to use a scale of 1 inch equals

Liula [17]

Answer:

Part a) The scale of the new blueprint is

Part b) The width of the living room in the new blueprint is

Step-by-step explanation:

we know that

The scale of the original blueprint is

and

the width of the living room on the original blueprint is 6 inches

Find the actual width of the living room, using proportion

Find the actual length of the living room, using proportion

Find the scale of the new blueprint, divide the length of the living room on the new blueprint by the actual length of the living room

simplify

Find the width of the living room in the new blueprint, using proportion

7 0

3 years ago

Which line is parallel to the line shown below?

Travka [436]

<h3>Answer: Choice D</h3>

4x - 3y = 15

====================================================

Explanation:

The two points (-1,-1) and (2,3) are marked on the line

Let's find the slope of the line through those two points.

$(x_1,y_1) = (-1,-1) \text{ and } (x_2,y_2) = (2,3)\\\\m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{3 - (-1)}{2 - (-1)}\\\\m = \frac{3 + 1}{2 + 1}\\\\m = \frac{4}{3}\\\\$

The slope is 4/3 meaning we go up 4 and to the right 3.

-------------

Parallel lines have equal slopes, but different y intercepts. We'll need to see which of the four answer choices have a slope of 4/3.

Solve the equation in choice A for y. The goal is to get it into y = mx+b form so we can determine the slope m.

$3x + 4y = -4\\\\4y = -3x-4\\\\y = -\frac{3}{4}x-\frac{4}{4}\\\\y = -\frac{3}{4}x-1$

Equation A has a slope of -3/4 and not 4/3 like we want.

Therefore, this answer choice is crossed off the list.

Follow similar steps for choices B through D. I'll show the slopes of each so you can check your work.

slope of equation B is 3/4
slope of equation C is -4/3
slope of equation D is 4/3

We have a match with equation D. Therefore, the equation 4x-3y = 15 is parallel to the given line shown in the graph.

You can use graphing tools like Desmos or GeoGebra to confirm the answer.

4 0

1 year ago

V=1/2at^2 solve for t

malfutka [58]

$\dfrac{1}{2}at^2=V\qquad\text{multiply both sides by 2}\\\\at^2=2V\qquad\text{divide both sides by}\ a\neq0\\\\t^2=\dfrac{2V}{a}\to\boxed{t=\sqrt{\dfrac{2V}{a}}}$

8 0

4 years ago