hurryyy!!!!!
and plz explain why

Answer:

the second one

Step-by-step explanation:

because if you think it how it folds the second one doesnt form a tetrahedron.You can try it by drawing it in a letter then cutting it to see which forms a shape and which doesnt.

Answer:

length =25m

breadth =16m

area of rectangle =25*16

according to question

area of rectangle =Area of Square

Area of squre =400m

Side *Side =400m

(Side)=(20m)

Side =20m

Answer:

Check image below. :)

Answer:

Fractions- 1/4, 1/10

Decimal- 0.5, 0.2

Percentage- 33.3%, 12.5%

Step-by-step explanation:

100/25 = 4, 100/10 = 10

1/2 = 0.5, 1/5 = 0.2

0.333x100 = 33.3, 0.125x100= 12.5

Answer:

A= 20 + 0.75*j

Step-by-step explanation:

Giving the following information:

You have $20 and earn $0.75 for each cup of orange juice you sell.

To calculate the total amount of dollars (A), we need to use the following formula:

A= 20 + 0.75*j

j= number of cups

For example, for 15 cups:

A= 20 + 0.75*15

A= $31.25

Answer:

9

Step-by-step explanation:

We are given that

Cost of each banana=$0.90

Cost of each orange=$0.80

Ava have total money=$15

We have to find the number of each if Ava wants to buy an equal amount of bananas and oranges at most.

Let x be the number of each.

According to question

[tex]0.9x+0.8x=15[/tex]

[tex]1.7x=15[/tex]

[tex]x=\frac{15}{1.7}[/tex]

[tex]x=8.8\approx 9[/tex]

[tex]x=9(approximately)[/tex]

Hence, number of banana bought=9

Number of oranges bought=9

Answer:

36

Step-by-step explanation:

She kniited a blanket with a certain area with 4 balls.

The new blanket will 3x3 =9 times as much area, so 9 x4 = 36 balls of yarn

Answer:

c < 2

Step-by-step explanation:

We have an inequality and are asked to solve for the variable "c."

4c + 2 < 10

To solve for c, we need to get it by itself, isolate it in every way possible.

4c + 2 < 10

Subtract 2 from both sides :

4c < 8

Now before we move on, take this into consideration, sometimes the inequality sign can be switched but under one condition. And that is when you divide both sides by a negative, since we are not dividing by a negative, no switch of the sign is needed.

Divide 4 from both sides to get c alone :

c < 2

Answer:

25 mg. is lighter than 25 cg.

Step-by-step explanation:

Well,

The prefix "milli" means thousandth and the prefix "centi" means hundredth.  So a milligram will be one-tenth of a centigram.

10 mg. = 1 cg.

25 mg. = 2.5 cg.

2.5 cg. < 25 cg.

25 mg. is lighter than 25 cg.

Answer:

25 milligrams are lighter, because 1 milligram equivales to 1 gram multiplied by 100.

Step-by-step explanation:

Answer:

the

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

25%X4=100%

20X4=80

Answer:

{x,y} = {-2, -2}

Step-by-step explanation:

Answer:

Step-by-step explanation:

There are more adults than children so the ratios made have to depict this.

These ratios should add up to 16.

Three different ratios:

11 adults : 5 children

9 adults : 7 children

13 adults : 3 children

The above will all add up to 16 and show more adults than children.

The different ratios of adults to children that might be on the bus is;

14 : 2, 13 : 3, 12 : 4, 11 : 5, 10 : 6, 9 : 7

We are given;

The people on the bus consist of adults and children.

We are told that;

Thus, the different possibilities for ratio between

adults and children will be 2 numbers that add up to 16 which must not be equal. Thus, we have;

14 : 2

13 : 3

12 : 4

11 : 5

10 : 6

9 : 7

Read more about ratios at; https://brainly.com/question/2784798

Answer:

a. sin 30* = sin 150*

b. sin 1* = sin 179*

a. cos 340* = cos 20*

b. cos 260* = cos 100*

Step-by-step explanation:

sine is symmetrical around x = 90*

cosine is symmetrical around x = 180*

* means degree sign of course.

Answer:

z = 10 mm

Step-by-step explanation:

[tex]\frac{z}{15} =\frac{40}{60\\}[/tex]

[tex]z * 60 = 40 * 15[/tex]

[tex]60z = 600[/tex]

[tex]z = 10\\[/tex]

Answer:

AB=5.39 cm

BC=5 cm

CD=5.83 cm

DE=3.91 cm

A to E=20.13 cm

Step-by-step explanation:

DE^2=2.5^2+3^2

DE^2=6.25+9

DE^2=15.25

DE=3.91

CD^2=3^2+5^2

CD^2=9+25

CD^2=34

CD= 5.83

BC^2=4^2+3^2

BC^2=16+9

BC^2=25

BC=5

AB^2=5^2+2^2

AB^2=25+4

AB^2=29

AB=5.39

5.39+5+5.83+3.91=20.13

Answer:

Bx3=27 there are 9 blue marbles

Step-by-step explanation:

Answer:

Length of the resort pool is 13.5 ft.

Step-by-step explanation:

Since, both the rectangular pools are similar in shape,

Corresponding sides of these pools will be proportional.

By the property of similarity,

[tex]\frac{\text{Length of resort pool}}{\text{Length of backyard pool}}= \frac{\text{Width of the resort pool}}{\text{Width of the backyard pool}}[/tex]

[tex]\frac{l}{9}=\frac{6}{4}[/tex]

l = [tex]\frac{6\times 9}{4}[/tex]

l = 13.5 ft

Therefore, length of the resort pool will be 13.5 ft.

Answer:

D. 18

Step-by-step explanation:

what life was like in the time of

9514 1404 393

Answer:

  C.  9

Step-by-step explanation:

Maybe you want to simplify ...

  [tex]2\sqrt[3]{27^{2x}} = 2(3^3)^{\frac{2x}{3}}=2(3^{2x})=2(3^2)^x=\boxed{2\cdot 9^x}[/tex]

The base of the simplified function is 9.

Answer:

-1809 + 899i  or

-1809 + √-899

Step-by-step explanation:

foil method

i² = -1

Answer:

-33>x

Step-by-step explanation:

Answer:

Step-by-step explanation:first it's( -4,9,-10,-18,12,15

hope it helps you welcome

Answer:

0.063

is the correct answer

Answer:

0.063

Step-by-step explanation:

Answer:

84

Step-by-step explanation:

To complete the concrete highway with pavers 84 pavers are needed.

We know the perimeter of any 2D figure is the sum of the lengths of all the sides except the circle and the area of a rectangle is the product of its length and width.

From the given information each Pavel has an area of 4.5 square feet.

And the area of the driveway can be obtained by multiplying the length and width of the driveway which is,

= (21×18) sq feet.

= 378 sq feet.

Therefore, The number of pavers needed is,

= (378/4.5).

= 84 pavers.

learn more about rectangles here :

https://brainly.com/question/29123947

#SPJ3

1: 121, 2: 59, 3: 59

This is for the first graph because if you look at the bottom half of a circle is 180 so since one is 121 you just have to subtract 121 from 180 and you have your answer

Answer:

(half of base)² + (height)² = (20)²

Step-by-step explanation:

In an isosceles triangle, the angle bisector from the 3rd angle to the opposite side is a perpendicular bisector, so you split the isosceles triangle into two congruent right triangles.

This technique of 'splitting the isosceles' is used a LOT.

Answer:

الحقيقة لن تكون جيدة جدًا

Answer:

Linear, y=6x-21

Step-by-step explanation:

Graph the answer to get an idea of the shape: linear.

Use y=mx+b and m=y2-y1/x2-x1 to find formula

m=y2-y1/x2-x1=3-(-9)/4-2=12/2=6

y=6x+b

9=6(5)+b

9-30=b=-21

y=6x-21

Answer:

$50

Step-by-step explanation:

1. First you need to divide 70 by 7.

2. Your answer should be 10.

3. You then need to multiply the product, 10 by 5.

4. You answer should be 50 and because we are using this in a money situation the answer is $50.

Answer:

50

Step-by-step explanation: