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3 years ago

1. If you’re good at geometry could you please help me?

Mathematics

1 answer:

LenKa [72]3 years ago

7 0

Answer:

54.67mi

Step-by-step explanation:

so the ? equals to

?^2 = 42^2 + 35^2

-> ? = 54.67mi

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Find the height of a paralleogram, if its area is 84square inches, its base is 12 inches, and its height is respresented by x +

Ghella [55]

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2 years ago

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Triangle ABC is labeled with points A(5, 2), B(1, 2) and C(3, 6) on a coordinate plane. Find the coordinates of A' B' C' after a

Ilia_Sergeevich [38]

Answer:

After reflection over the x-axis, we have the coordinates as follows;

A’ (5,-2)

B’ ( 1,-2)

C’ (3,-6)

Step-by-step explanation:

Here, we want to find the coordinates A’ B’ and C’ after a reflection over the x-axis

By reflecting over the x-axis, the y-coordinate is bound to change in sign

So if we have a Point (x,y) and we reflect over the x-axis, the image of the point after reflection would turn to (x,-y)

We simply go on to negate the value of the y-coordinate

Mathematically if we apply these to the given points, what we get are the following;

A’ (5,-2)

B’ ( 1,-2)

C’ (3,-6)

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2 years ago

4) A certain computer costs $599.00 at Best Buy. On Black Friday, it is on sale for 35% off. What is the price of the computer o

lawyer [7]

Answer:

$389.35

Step-by-step explanation:

A certain computer costs $599.00 at Best Buy. On Black Friday, it is on sale for 35% off.

So, after 35% off the price of the computer will reduce from $599.00.

We are asked to find the cost of the computer on Black Friday.

Therefore, the price of the computer will reduce by $[599 \times \frac{35}{100}] = 209.65$ Dollars.

And the reduced price on the Black Friday will be $(599 - 209.65) = $389.35 (Answer)

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2 years ago

Damien has 30 coins, all nickels and dimes. The total value of all these coins is $2.05. How many nickels does he have?

Damm [24]

Hi there!

nickels:19

We know that there is only nickels and dimes in his coin collection..

1.Multiply two terms:

$10$ · $10=1.00$

Then there would be 20 nickels but 1+1=2 not 2.05.

2.Multiply the terms:

$11$ · $10=1.10$

$19$ · $5=0.95$

3.Combine the two terms:

$1.10+0.95=2.05$

Therefore, there would be 19 nickels...

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2 years ago

On a unit circle, the vertical distance from the x-axis to a point on the perimeter of the circle is twice the horizontal distan

erastovalidia [21]

Draw a picture of the problem.

let ∅ be the angle formed in the first quadrant such that its y coordinate is twice its x coordinate.

The lengths are denoted 2a and a.

Joining the point (0, 0) to the point described, in the first quadrant, we have a right triangle with side lengths $(2a, a, \sqrt{5}a )$ , where $\sqrt{5}a$ is the hypotenuse, found by the Pythagorean theorem.

sin∅=opposite side/hypotenuse= $\frac{2a}{ \sqrt{5}a }= \frac{2}{\sqrt{5}}= \frac{2\sqrt{5}}{5}$

Now consider the reflection of the red line segment with respect to the x-axis, the ratio of the distances described still holds. Since here we are in the fourth quadrant, the sine is negative, so sin is $-\frac{2\sqrt{5}}{5}$ .

Answer: { ${\frac{2\sqrt{5}}{5}, -\frac{2\sqrt{5}}{5}}$ }

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3 years ago

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