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4 years ago

Need help please very confuzzled

Mathematics

2 answers:

Korvikt [17]4 years ago

8 0

Ok, let’s take a look at this from a different perspective, without looking at x or y.

We know that the lower left angle, not looking at the intersecting line, is a 90 degree angle. The 40 degrees indicates that the remaining side is 50 degrees. Let’s call this angle A.

Now, still ignoring x and y, take a look at the top line and the bottom line. Notice that they are parallel, indicated by the red arrows. This means that the 90 degree angle you see at the lower left corner also applies to the upper left.

Finally, plugging in the 3y we see at the top, angle b is 3y=90.

We know that all triangles add up to 180 degrees. So, let’s set up that equation.

180=50+90+5x
180=140+5x
40=5x
x=8

That said; the answer to this is x=8, and y=30 (Sorry this took a while! I made a mistake halfway through.)

SVEN [57.7K]4 years ago

7 0

I'm not too sure either.

5(5) + 3(5) = 40 and

5(2) + 3 (10) = 40

If you can't think of anything maybe that'll help

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Determine the value of angle ECB Please help me out!

ZanzabumX [31]

Answer: ∠ECB = 60°

Step-by-step explanation:

First, find the value of x by adding them up.

x + 3x + 2x = 6x

Since we know that all of the angles create a 180° angle, we can set up a proportion.

6x = 180°

To find the value of x, divide both sides by 6.

6x ÷ 6 = x

180 ÷ 6 = 30

So now the proportion is x = 30.

Now that we now x = 30, we can plug in 30 to the angle measures.

∠DCA = 30°

∠DCE = 90°

∠ECB = 60°

So angle ECB is 60°.

hope this helps!

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3 years ago

The length of a rectangle is three times the width of the rectangle. The area of the rectangle is 48cm2. Draw the rectangle on t

Schach [20]

Answer:

The width is 4 cm

The length is 12 cm.

Step-by-step explanation:

Area of a rectangle

Given a rectangle of width W and length L, its area is calculated as follows:

$A=W\cdot L$

The area of the given rectangle is 48 cm^2, and the length is three times the width, thus:

L = 3W

Substituting into the formula of the area:

$W\cdot L=48$

$W\cdot 3W=48$

Simplifying:

$3W^2=48$

Solving:

$W^2=48/3=16$

$W=\sqrt{16}=4$

The width is 4 cm. Find the length:

L=3W=3*4= 12

The length is 12 cm.

The image attached shows the rectangle on the centimeter grid

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