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3 years ago

Help me thank you!!

Mathematics

1 answer:

Evgen [1.6K]3 years ago

7 0

Answer:

Step-by-step explanation:

The pyramid is made up of 4 large triangles. So if you use formula for the triangle $A = \frac{bh}{2}$

where b = 6 and h = 2 after plug you will get 6.

Now times them by 4 because you have 4 triangles so you will end up with 48.

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Make x the subject of the formula 6x+a=5(x+t)

Mademuasel [1]

1. Expand
6x + a = 5x + 5t
2. Get x on one side
6x - 5x = 5t - a
3. Simplify
x = 5t - a (I think)

5 0

3 years ago

Read 2 more answers

What is 2/3 - (-2/3)

7nadin3 [17]

Answer:

4/3 (= 1 1/3)

Step-by-step explanation:

2/3 - (-2/3)

= 2/3 + 2/3

= (2+2) / 3

= 4/3

= 1 1/3

7 0

3 years ago

What is the value of x?

artcher [175]

I think a 155 degrees

7 0

3 years ago

Read 2 more answers

What is the answer I will give brainlyest

Scorpion4ik [409]

Answer:

31.5 squared cm

Step-by-step explanation:

Let's start with the triangle part :)

We have a base half a base of 3, so let's add 3 more to make it complete, which gives us 6.

6cm (base) x 6 cm (height) = 36 cm.

Since it's a triangle, we must divide by 2 which gives us 18 cm.

Now let's move on to the circle.

we have a radius of 3.

in order to find area of a circle, we have to do pi x r squared.

We have a radius of 3 so let's square it, which give us 9. after that we multiply 9 by pi.

In the directions, it says use 3 for pi. So we do

3 x 9 which equals 27.

But WAIT- it's a half circle so we divide 27 by 2 which gives us 13.5 cm.

Let's add the two

18 cm + 13.5 cm = 31.5 cm squared (remember to square it since it's area!!)

I hope this helped!!! <3

8 0

3 years ago

21. Find x, given AD = BC =6 m.

BigorU [14]

Answer:

Draw a perpendicular line from point A to line segment BC. Name the intersection of said line at BC “E.” You now have a right angled triangle AED.

Now, you know AD = 6 m. Next, given that the trapezoid is a normal one, you know that the midpoints of AB and DC coincide. Therefore, you can find the length of DE like so, DE = (20–14)/2 = 3 m.

Next, we will use the cosign trigonometric function. We know, cos() = adjacent / hypotenuse. Hence, cosx = 3/6 = 1/2. Looking it up on a trigonometric table we know, cos(60 degrees) = 1/2. Therefore, x = 60 degrees.

Alternatively, you could simply use the Theorem for normal trapezoids that states that the base angles will be 60 degrees. Hope this helps!

6 0

3 years ago

Help me thank you!!​

Help me thank you!!