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Vlada [557]
3 years ago
7

Help me pls, see picture below.

Mathematics
1 answer:
Marysya12 [62]3 years ago
8 0

18u^2. For verifying that count the entire squares of the triangle, and use the partial one to make complete squares.

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Yvonne had a rope that measured 2/5 long. She
yawa3891 [41]

Answer:

Number of smaller ropes she can make from the larger rope = 2/3

Step-by-step explanation:

Total length of rope = 2/5 ft

Length of smaller rope = 3/5 ft

How many smaller ropes can she make from the larger rope?

Number of smaller ropes she can make from the larger rope = Total length of rope / Length of smaller rope

= 2/5 ÷ 3/5

= 2/5 × 5/3

= (2*5)/(5*3)

= 10/15

= 2/3

Number of smaller ropes she can make from the larger rope = 2/3

7 0
3 years ago
Someone help please
dalvyx [7]

Answer:

19

Step-by-step explanation:

the 2 angles shown are complementary meaning that they will add up to equal 90

x+71=90

subtract 71 from each side x=19

5 0
3 years ago
Read 2 more answers
The polygons in each pair are similiar. help find the missing side length???
galben [10]

Answer:

x=12

Step-by-step explanation:

Since the polygons are similar, we can use the formula: \frac{x}{15}=\frac{32}{40}. Using cross-multiplication , we obtain: 40x=15*32\\x=\frac{15*32}{40}= 12.

4 0
2 years ago
He dimensions are tripled. The new surface area would be times larger than the original surface area.
ddd [48]

Answer:

The new surface area would be 9 times larger than the original surface area.

Step-by-step explanation:

Here we do not know what was the original shape, but we will see that it does not matter.

Let's start with a square of side length L.

The original area of this square will be:

A = L^2

Now if each dimension is tripled, then all the sides of the square now will be equal to 3*L

Then the new area of the square is:

A' = (3*L)^2 = (3*L)*(3*L) = 9*L^2 = 9*A

So the new surface area is 9 times the original one.

Now, if the figure was a circle instead of a square?

For a circle of radius R, the area is:

A = pi*R^2

where pi = 3.14

Now if the dimensions of the circle are tripled, the new radius will be 3*R

Then the new area of the circle is:

A' = pi*(3*R)^2 = pi*9*R^2 = 9*(pi*R^2) = 9*A

Again, the new area is 9 times the original one.

If the figure is a triangle?

We know that for a triangle of base B and height H, the area is:

A = B*H/2

If we triple each measure, we will have a base 3*B and a height 3*H

Then the new area is:

A' = (3*B)*(3*H)/2 = (3*3)*(B*H/2) = 9*(B*H/2) = 9*A

Again, the new area is 9 times the original area.

So we can conclude that for any shape, the new area will be 9 times the original area.

3 0
2 years ago
The three angles of a quadrilateral are 55,73,105 what is the fourth angle
-Dominant- [34]

Answer:

x = 127°

Step-by-step explanation:

Let A, B and C be the three angles of a quadrilateral such that they are 55, 73, 105 respectively.

We know that, the sum of angles of a quadrilateral is equal to 360°. Let fourth angle be x.

55+73+105+x = 360

233+x=360

x = 360-233

x = 127°

So, the fourth angle is equal to 127°.

3 0
2 years ago
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